Hi,
Based on Dick's list from November 2022 (unshaded columns), I have listed the P01s that require new P02s to be created, with any change to the P36 listed as well (pale yellow columns with red text). Any notes are shown in the grey shaded columns. Note that these new P02s only relate to the list of P01s provided by Dick in November 2022 and that other P02s may be required to complete the "set" (e.g. I've suggested "Organofluorine concentrations in biota" and "Organofluorine concentrations in sediment" but not "Organofluorine concentrations in water bodies" because no P01 for the latter was included in Dick's list).
Megan
P36s and new P02s.xlsx

We have received a request for the following mappings:
EPC00105 Water body chlorophyll-a CHLTVOLU mg/m3 Concentration of chlorophyll {Chl CAS 1406-65-1} per unit volume of the water body
EPC00105 Water body chlorophyll-a CPHLPRKG mg/kg Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit mass of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer
EPC00105 Water body chlorophyll-a CPHLPRKG ug/l Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit mass of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer
EPC00105 Water body chlorophyll-a CPHLFLCF ug/l Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate 0.2-10um phase] by cascade filtration, acetone extraction and fluorometry
EPC00105 Water body chlorophyll-a SCHLHPPF ug/l Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate 0.2-2um phase] by filtration, acetone extraction and high performance liquid chromatography (HPLC)
EPC00105 Water body chlorophyll-a SCHLFLPC ug/l Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate 2-5um phase] by filtration, acetone extraction and fluorometry
EPC00105 Water body chlorophyll-a SCHLFLPN ug/l Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate GF/F-2um phase] by filtration, acetone extraction and fluorometry
EPC00105 Water body chlorophyll-a SCHLFLPM ug/l Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate GF/F-5um phase] by filtration, acetone extraction and fluorometry
EPC00107 Water body chlorophyll-c CHLC12PX mg/m3 Concentration of chlorophyll-c1+c2 per unit volume of the water body
EPC00107 Water body chlorophyll-c CHLC03PX mg/m3 Concentration of chlorophyll-c3 {chl-c3} per unit volume of the water body
EPC00190 Water body dissolved organic carbon {DOC} CORGCOTX umol/l Concentration of organic carbon {organic_C CAS 7440-44-0} {DOC} per unit volume of the water body [dissolved plus reactive particulate phase] by high temperature Pt catalytic oxidation
EPC00190 Water body dissolved organic carbon {DOC} CORGCOZX umol/l Concentration of organic carbon {organic_C CAS 7440-44-0} {DOC} per unit volume of the water body [unknown phase] by high temperature catalytic oxidation
EPC00157 Water body particulate organic carbon {POC} CORGCAP1 % Concentration of organic carbon {organic_C CAS 7440-44-0} {POC} per unit volume of the water body [particulate >GF/F phase] by filtration, acidification and elemental analysis
EPC00190 Water body dissolved organic carbon {DOC} IC000083 umol/l Concentration of organic carbon {organic_C CAS 7440-44-0} per unit volume of the water body [dissolved plus reactive particulate <unknown phase]
EPC00159 Water body organic nitrogen DONXXXX1 umol/l Concentration of organic nitrogen {organic_N} {DON} per unit volume of the water body [dissolved plus reactive particulate <GF/F phase]
EPC00002 Water body dissolved oxygen concentration DOXYSCKG umol/kg Concentration of oxygen {O2 CAS 7782-44-7} per unit mass of the water body [dissolved plus reactive particulate phase] by Sea-Bird SBE 43 sensor and calibration against sample data
EPC00002 Water body dissolved oxygen concentration DOXYUCKG umol/kg Concentration of oxygen {O2 CAS 7782-44-7} per unit mass of the water body [dissolved plus reactive particulate phase] by Sea-Bird SBE 43 sensor and no calibration against sample data
EPC00007 Water body phosphate PHOSZZXX nmol/l Concentration of phosphate {PO43- CAS 14265-44-2} per unit volume of the water body [unknown phase]
EPC00160 Water body dissolved nitrogen NTCOKGOA umol/kg Concentration of total nitrogen {total_N} per unit mass of the water body [dissolved plus reactive particulate phase] by oxidation and colorimetric autoanalysis
EPC00160 Water body dissolved nitrogen NTOTKJM1 ug/l Concentration of total nitrogen {total_N} per unit volume of the water body [dissolved plus reactive particulate phase] by Kjeldahl method
EPC00201 Water body particulate phosphorus TPHSMSPT umol/kg Concentration of total phosphorus {total_P CAS 7723-14-0} per unit mass of the water body [particulate >unknown phase]
EPC00201 Water body particulate phosphorus PHPSIN01 mg/l Concentration of total phosphorus {total_P CAS 7723-14-0} per unit volume of the water body [particulate >51um phase]
EPC00201 Water body particulate phosphorus TPHSWCP1 umol/l Concentration of total phosphorus {total_P CAS 7723-14-0} per unit volume of the water body [particulate >GF/F phase] by filtration, oxidation and colorimetric autoanalysis
EPC00133 Water body carbon dioxide partial pressure PCO2C101 uatm Partial pressure of carbon dioxide {CO2 CAS 124-38-9} {pCO2} in the water body by computation from pH and alkalinity
EPC00168 Water body pH PHTLSX25 pH units pH (total scale at zero pressure and 25 degrees Celsius) {pH[T]} per unit mass of the water body
EPC00003 Water body dissolved oxygen saturation DOXYMOD1 % Saturation of oxygen {O2 CAS 7782-44-7} in the water body [dissolved plus reactive particulate phase] by model prediction

Dear colleagues,
we are not sure whether following P01 are correctly in P35 Water body chlorophyll-a:

1. CPHLUA01 Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] by radiometer and computation from the ratio of upwelled irradiance at 440 and 570 nm
2. CPHLUB01 Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] by radiometer and computation from the ratio of upwelled irradiance at 490 and 570 nm

Are these satellite data? We are not sure if it is correct to aggregate these P01 with in situ (bottle) and fluorometer (CTD, sensosrs) data.
What is you opinion?

It was noticed that some recently created P01 that should have a mapping to P35 do not. Need to come up with an easy way to maintain those mappings.

Based on the most recent literature regarding the microlitter research we propose to include 2 additional polymer types in the vocabulary:

• Acrylonitrile butadiene styrene (ABS)
• Styrene-butadiene rubber (SBR): synthetic rubber formed from a copolymer of styrene and butadiene

pentachlorophenol is a pesticide. Corresponding P01 codes should therefore be mapped to the P02 groups for pesticides. Instead QBCOCX19, CPEMM020 were mapped to BCOC and CASD respectively.

I am proposing to link all the P01 codes related to the quantification of chlorophenol compounds in sediment, biota, and water body to the P02 groups for "pesticides". Is there any objections or exceptions? At present, about half the codes are mapped to "Other organic contaminants" and half to "Pesticides". From the info I have available, chlorophenols tend to be used as "pesticides, herbicides, or disinfectants".

The definitions of "Pesticides" in the P02 groups are:

And in P36:

To remove any ambiguity, we could propose to broaden PEBI, PEWB, PESD to include biocides in its preflabel. Please commnet below or vote with thumb up if you agree or send me your comment by email if you're not a registered giuthub user.

P01 codes related to selenium are wrongly mapped to P02 group codes related to metals (selenium is not a metal) e.g.

BCMT Metal concentrations in biota

For concentrations in water bodies the P02 term includes inorganic selenium with trace metalloid as in e.g.

MDWD Dissolved trace metalloid and inorganic selenium concentrations in water bodies
MDWP Particulate trace metalloid and inorganic selenium concentrations in water bodies

So I am proposing to do the same for:
MDBO Trace metalloid concentrations in biota >> Trace metalloid and inorganic selenium concentrations in biota
Then extend this to:
MDPW Trace metalloid concentrations in sediment pore water >> Trace metalloid and inorganic selenium concentrations in sediment pore water
MDSD Trace metalloid concentrations in sediment >> Trace metalloid and inorganic selenium concentrations in sediment

And map the P01 codes currently mapped to metals to these updated codes.

The data reported in the Mediterranean follows UNEP MAP protocol that contains the term granules to describe the morphology of the particles. We would need to include the type "granule" in micro-litter vocabulary:

Preferred label: microplastic granule

Alt label: granule

Definition: spherical shape, with a regular round shape bead.

@gwemon please, let us know if you need any additional information.

I was confirmed that the originator requires a new S27 which should be something like:

ISPRA/OGS PAH sum
SIMILAR TO:
CS003044 IMS PAH mixture I

Description: A mixture of 15 polycyclic aromatic hydrocarbons given priority by the EPA (naphthalene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, benzo[g,h,i]perylene, indeno[1,2,3-c,d]pyrene, dibenz[a,h]anthracene), whose concentrations are summed to produce an overall 'PAH concentration' by ISPRA (Institute for Environmental Protection and Research) and OGS (National Institute of Oceanography and Applied Geophysics), Italy

A number of P01 codes for metals concentrations in sediments were wrongly mapped to http://vocab.nerc.ac.uk/collection/P02/current/RMIN/

We have 2 terms in the vocabulary that might be the same one, i.e. polyethylene terephthalate, PET (H0500011) that is a type of polyester (H0500005).We propose to deprecate PET (H0500011) and have a generic one (polyester (H0500005)) with the definition: All types of polyesters including PVC.
In the same way, we have the term PVC (H0500009) but we don’t have a generic term to describe other polychlorinated polymers. We propose to have a unique generic term to include All Polychlorinated polymers including PVC.

Hi,
Based on Dick's list from November 2022 (unshaded columns), I have listed some P01s with a suggested P36 change (pale yellow column with red test) where no change is required at the P02 level. Some of these are as queries. As discussed in our meeting on 20 February 2023, there is a note at the top about changing the name of P36 "Heavy metals" to "Metals and metalloids".
Megan
P36s no P02 change.xlsx

One P01 code for TCP in sediment is mapped to the wrong P02 group: CASD instead of SCOC..

Hi,
Here is a list of possible changes that could be made to the S27 and CAS fields based on Dick's list from November 2022. The unshaded columns are those sent by Dick, the pale yellow columns with red text are possible amendments, and the grey column is notes.
Megan
S27 and CAS additions.xlsx

A few (n=9) P01 parameters related to bromodichloromethane in water bodies and biota were mapped to P02=BCAH (Concentration of polycyclic aromatic hydrocarbons (PAHs) in biota) and PCHW( Concentration of polycyclic aromatic hydrocarbons (PAHs) in the water column);
These have been remapped to:
BCOC Concentration of other organic contaminants in biota
and
WCOC Concentration of other organic contaminants in the water column

The P01 codes for concentrations of "trichlorobenzenes" and "1,3,5-trichlorobenzene" in the water body are mapped to the wrong P02 code: "Other halocarbon concentrations in water bodies" ("DCMX") instead of "Concentration of other organic contaminants in the water column" ("WCOC").

Hi @gwemon
as discussed, we include here the list of terms in P35 vocabulary that are not used anymore. The terms can be deprecated.
P35_vocabulary_ML.xlsx

Dear colleagues,
we need following corrections on P01-P35 connections:
P01: OPHSVLPT Concentration of organic phosphorus {organic_P CAS 7723-14-0} {POP} per unit volume of the water body [particulate >unknown phase]
must be eliminated from P35 EPC00153 Water body organic phosphorus
and moved to a NEW P35: Water body particulate organic phosphorus {POP}

Then following P01 (currently NULL P35) should go to the listed P35:
CHLTVOLU to EPC00105
NTRZKGD1 to EPC00005
DOXYSC02 to EPC00002
NTCOKGD1 and NTOTCOD1 to EPC00160
NTOTKJM1 to EPC00134
TPHSWCD3 to EPC00186

Thanks for your collaboration, Marina

Hi @gwemon,
I copy here the request we had made some time ago regarding the additonal material clasess. It was embed on an issue regarding H01. This will solve Kati Lind request. Thanks

@mmolinajack @mattevi78 Regarding required changes to H05 to cater for non-plastic material, you suggested: "We propose to create generic and specific terms, to cover all the possibilities: rubber, natural fibers, glass, metal, tar, plastic, non-plastic, non-plastic man-made" We already have synthetic rubber in H05 so just having a term "rubber" would be confusing. How about "natural rubber"? then "natural fibres", "glass", "metal". I think the term "tar" maybe be too broad. Do we mean "petroleum tar"? Do we have other terminologies from other protocols to use as a reference? Also, the inclusion of the last 2 suggested categories might be quite confusing. Maybe labels such as "undefined plastic" and "undefined non-plastic" would be more useful.

@gwemon We agree with all your suggestions:

• natural rubber
• natural fibres
• glass
• metal
• oil tar or petroleum tar as you wish (we have found the following article regarding tar (https://link.springer.com/article/10.1007/s11270-015-2298-5)
• undefined plastic
• undefined non-plastic

For us, it is fine to go ahead with this.
Thanks

Originally posted by @mmolinajack in #19 (comment)

Dear colleagues,
we need following new P35 term: "Water body dissolved oxygen concentration-Not calibrated" or something similar to aggregated not calibrated sensor data of oxygen.
Following P01 must be removed from: EPC00002 and added to the new P35
List of P01 to be moved:
DOXYSU01
DOXYSU02
DOXYUZ01
DOXYUZ02

Thanks for your collaboration

Hi,
Here is a short list of possible changes that could be made to the P02 codes for contaminant vocab using existing P02 codes (with any relevant change to the P36 also shown). The unshaded columns with black text are from Dick's list. The pale yellow shaded columns with red text are my suggestions, and the grey shaded column shows any notes.
Megan
P02 possible changes using existing codes.xlsx

A number of P01 codes for organobromine and organochlorine contaminants are mapped to the P02 code for "other contaminants" for sediments and biota but not for water bodies creating inconsistencies and potentially making these substances "invisible" to P36>P02>P01 discovery chain if measured in water bodies.
The main correction requires mappings to P02 for "Other halocarbons in water bodies" (DCMX) to be changed to "Other contaminants in water bodies" (WCOC).

The substances for which we noticed discrepancies were:
CS003246 1,1,1-trichloroethane
CS003233 1,1,2-trichloroethane
CS003226 1,1,2-trichloroethene
CS000949 1,2,3-trichlorobenzene
CS000956 1,2,4-trichlorobenzene
CS003734 2,2-dichloropropanoic acid
CS003334 2,4,6-trichlorophenol
CS003252 2,4-dichlorophenol
CS003735 bromochloroacetic acid
CS003032 bromochloromethane
CS003736 bromodichloroacetic acid
CS003035 bromodichloromethane
CS003745 chloroacetic acid
CS003737 chlorodibromoacetic acid
CS003739 dibromoacetonitrile
CS003036 dibromochloromethane
CS003740 dichloroacetic acid
CS003741 dichloroacetonitrile
CS003270 dichloromethane
CS003138 tetrachloroethene
CS003013 tetrachloromethane
CS003747 tribromoacetic acid
CS003001 tribromomethane
CS003748 trichloroacetic acid
CS003749 trichloroacetonitrile
CS003033 trichloromethane

Dear All, we found an inconsistency in 2 of our P01 codes and I am trying to determine whether the error is in the Preferred Label or the Alternative Label and definition (nvs-vocabs/P01#25). Would any of you (maybe @Osanna123 or @MeganAnneFrench) be able to help? Do you have data related to those 2 contaminants measured in water bodies in your systems (2,4'-dichlorodiphenyldichloroethane {o,p'-DDD mitotane CAS 53-19-0} and 2,4'-dichlorodiphenyldichloroethylene {o,p'-DDE CAS 3424-82-6})? If so are they exclusively measured on unfiltered water or filtered water? or could both occur?

For addition of TGML colour categories to H04 see nvs-vocabs/H04#3

Hi,
As discussed in the meeting between OGS, Gwen (BODC), and Hans (ICES) on 20 February 2023, the name of the P36 "Heavy metals" should be changed to "Metals and metalloids" (as used by ICES) because many metals and metalloids are not heavy metals. The suggested definition change is: "Concentrations of metals, metalloids, and selenium (a reactive non-metal), some of which are of environmental concern."

Below are extracts from the email trail that led to the decision to create a new vocab for micro-litter transparency and to deprecate the term "transparent" as a colour class in H04 to be replaced by "colourless".
--- Request received from 8 April 2021 ---
Thanks to ISPRA we had the opportunity to have a look at the standard used in UNEP_MAP for the reporting of the micro-litter and we have seen that they report color and transparency as two different fields.
We reviewed the old email exchanges with you about this subject and at the moment of creating the terms for microlitter, the term opaque was not created because it was not related to any meaningful color.
We would like to evaluate with you the possibility of creating a new P01 to define the transparency of microlitter items with a new vocabulary H with 2 terms (transparent and opaque).
--- Response sent 8 apr 2021
I think it would be more consistent to have Colourless as an entry in H04 and then a transparency vocab which would have the terms Transparent and Opaque. We could deprecate Transparent and replace by Colourless for better traceability of changes.
--- Additional information 9 April 2021
We have been checking existing protocols and examples that we have on hand and the situation is the following:
-TGML: categorizes only color but inside has the terms transparent and opaque.
-UNEP-MAP and DeFishGear categorizes color and transparency (opaque or transparent without intermediate degrees).
-Baseman/CEFAS/ICES reports/protocols and some examples that we have, categorize only the color and transparent is one of them.
In our opinion, if we go ahead with the term colourless instead of transparent and then, the new P01 to describe the transparency, all cases might be reasonably covered.

Corrected mapping error for 1 P01 code that was mapped to P02:
BCOC Concentration of other organic contaminants in biota
instead of:
PEBI Pesticide concentrations in biota

As agreed during the meeting of EMODnet Chemistry regional coordinators: in the next harvest (October 2024) all RL will provide the list of P35, of not aggregated P01 and then we need to:
Compare lists for each region
Take decision on which P35 to keep in the collection also according to users' needs (e.g. EEA, JRC, RSCs)

Needs from EEA:
Dear all,
In relation to the talk we just had Hjalte just send me a list of parameters used for the EEA eutrophication indicators.

• Temperature
• Salinity
• Oxygen
• Phosphate, Total Phosphorus
• Silicate
• Nitrate, Nitrite, Ammonium, Total Nitrogen
• Hydrogen Sulphide
• pH, Alkalinity
• Chlorophyll a
• Secchi depths

In relation to the deadline for EEA indicators the general deadline is end May. The assessment work is done after vacation (~September) where the combined ICES, EMODnet and WISE datasets needs to be ready for use, so any data compilation issues needs to be resolved before that.

Best,
Hans

At the recent TGML microlitter workshop, the following size rages to characterize microlitter have been proposed: (20– 49 µm) + (50 – 99 µm) + (100 – 299 µm) + (300 µm – 999 µm) + (1000 – 4999 µm). The H03 vocabulary regarding microlitter sizes ranges do not contain the smallest size ranges, i.e. 20– 49 µm, 50 – 99 µm, 100 – 299 µm. We propose the inclusion of the above-mentioned ranges to be aligned to the TGML.

P36 for "pharmaceuticals" is not linked to any P02 parameter groups. Suitable groups exist like e.g
http://vocab.nerc.ac.uk/collection/P02/current/PHWB/
and
http://vocab.nerc.ac.uk/collection/P02/current/PHSE/

I hope somebody will be able to help here. As far as I can understand from my internet search, there are 3 indices used for monitoring the impact of organotin on gastropods: Relative Penis Size Index, Relative Penis Length Index and the Vas Deference Sequence Index. Can anybody point me to a reliable source of definition for these 3 indices please? They are referred to a lot but I cannot find the original source of the definition and have no access to the often quoted paper by Gibb and Bryan 1994.

P01 code for Concentration of diclofenac {CAS 15307-86-5} per unit dry weight of sediment needs to be re-mapped to P02 code for Pharmaceutical concentrations in sediments

See #34 for background to the issues and difficulties in aligning P36 and P02 bearing in mind that a P01 can only be linked to one and only one P02.
This results in the harvest of datasets that are irrelevant to the P36 categories because the P02 code relates to a chemical grouping that is broader than the P36 one. To illustrate this I have updated the EMODnet_chem thesaurus so that it now displays the chemical substances of the P01 codes that are linked to the P02s associated with the P36 concept.
By navigating this scheme you will quickly notice some anomalies: for example, under Antifoulants, we have some chemical substances that are not related to antifoulants, and the reason for this is because the P02 category is not specific to antifoulant chemicals but is based instead on organometallic and organometalloid species grouping.
Under Organic matter we have inorganic carbon because a P01 code related to inorganic carbon belongs to the P02 Carbon concentration in sediments

The only way around this is either to split the P02 categories and remap existing P01 (heavy work that would also impact vocab maintenance workload) or bypass P02 and obtain the P01 from the mapping between P36 and S27.

@SLBlakeman FYI

Corrected mappings for 8 P01 codes related to zinc and barium concentrations in biota wrongly mapped to P02:
MDBO Trace metalloid concentrations in biota
instead of:
BCMT Metal concentrations in biota

The H01 vocabulary includes information mainly related to the morphology of the particles. However, in some terms there is an inclusion of information related to the material: “microplastic”, “non-plastic” or “man-made”. It would be better to refine the vocabulary, including references only related to the description of the morphology and change the name of the vocabulary to EMODnet micro-litter morphology.

We would like to evaluate if it is possible to modify the term "microplastic styrofoam" from the existing H01 vocabulary (http://vocab.nerc.ac.uk/collection/H01/current/H0100006/) to clarify that it is related to both foam and styrofoam or even to change the name of the term to "microplastic foam" and in the definition include: all types of foam including styrofoam. We would prefer the second option. What do you think @gwemon ?
Thanks!
Eugenia and Matteo

@mattevi78

https://vocab.nerc.ac.uk/scheme/EMODNET_CHEM/current/
and
https://vocab.nerc.ac.uk/scheme/EMODNET_PEST/current/
do not currently display content correctly. I will try to review and repair but are these schemes used by anyone?

Dear colleagues,
we have been asked following P01:

1. pH (total scale) (pHT) of the water body by ion sensitive field-effect transistors (ISFET) sensor with Internal counter electrode and manufacturer's calibration applied
2. pH (total scale), (pHT) of the water body by ion sensitive field-effect transistors (ISFET) sensor with external counter electrode and manufacturer's calibration applied
3. pH (NBS scale) {pH[T]} of the water body by potentiometric glass electrode

We kindly ask if you could give this request a priority as these are operational data which need to be available as soon as possible. Thank you and sorry for being pressing.

In addition, from a long internal discussion, it was suggested that some codes (listed below) need probably revision as they seem not coherent with current techniques.

PHXXSP03: pH (total scale) {pH[T]} of the water body by spectrophotometry (internal electrode) and manufacturer's calibration applied
PHX XSP04: pH (total scale) {pH[T]} of the water body by spectrophotometry (external electrode) and manufacturer's calibration applied
PHXXSP05: pH (total scale{pH[T]}) of the water body by spectrophotometry (external electrode) and manufacturer's calibration and correction against independent temperature and salinity measurements
PHXXSP06: pH (total scale) {pH[T]} of the water body by spectrophotometry (internal electrode) and manufacturer's calibration and correction against independent temperature and salinity measurements
PHXXSP07: pH (total scale) {pH[T]} of the water body by spectrophotometry (external electrode) and manufacturer's calibration and laboratory calibration against TRIS-buffer applied

Microlitter particles are not always plastic made. It would be desirable to include in H05 the necessary terms to describe the artificial non plastic material or the plastic material (in absence of the specific polymer type characterization) and change the name of the vocabulary to EMODnet micro-litter materials and/or polymer types.

Hi,
I have attached an Excel file with some suggested changes to P02 and P36 codes relating to P01s for phosphorus (based on the file created by Dick in November 2022 - the non-shaded columns). The yellow shaded columns show the suggested changes and the grey shaded columns are notes. The suggested P02 change relates to a deprecated code: "Phosphorus concentrations in sediment DEPRECATED", but it is unclear why this was deprecated. As the other main nutrient-type element, nitrogen has P02s of "Nitrogen concentrations in sediment" (inorganic nitrogen is mapped here), "Dissolved total and organic nitrogen concentrations in the water column", and "Particulate total and organic nitrogen concentrations in the water column", whereas the active P02s for phosphorus are just "Dissolved total or organic phosphorus concentration in the water column" and "Particulate total and organic phosphorus concentrations in the water column". Phosphorus and nitrogen should be treated in the same way.
Megan
P02s phosphorus.xlsx

At present, the identification of marine microlitter include optical and spectroscopic methodologies but the monitoring is evolving through the use of new analytical techniques such as FTIR, RAMAN, NIR, pyrolysis MS. This change will result in the need for a change in the reporting, providing microlitter data describing each single particle. The reporting of marine microlitter particles on the single item level requires the creation of 3 new P01s to describe: Particle ID, particle length and particle width.

Hi,

I'm currently working on standardizing a microplastic/micro-litter dataset, and unfortunately the terms used for microlitter-type and -size are different from the ones that have been used to develop vocabulary for EMODnet. I was therefore wondering to what extent it would be possible to expand on the terms in the H01 and H03 repositories. If this is not the right place to ask, I apologize. The article that I'm standardizing can be found here: https://doi.org/10.1088/1748-9326/abbb4f - and more specifically, I am hoping to create standardized vocabulary for the size classes and plastic types listed below. Whilst the current available controlled vocabulary often partially describes the terms, I feel like the proposed size classes and types are more encompassing.

Size Classes - H03:
0.5 to 1.5 millimetres - Small microplastics. Micro-litter particles that pass through a 1.5 millimetre mesh screen but are retained by a 0.5 millimetre mesh.
1.5 to 5 millimetres - Large microplastics. Micro-litter particles that pass through a 5 millimetre mesh screen but are retained by a 1.5 millimetre mesh.
5 to 15 millimetres - Small mesoplastics. Micro-litter particles that pass through a 15 millimetre mesh screen but are retained by a 5 millimetre mesh.
15 to 50 millimetres - Large mesoplastics. Micro-litter particles that pass through a 50 millimetre mesh screen but are retained by a 15 millimetre mesh.

Microlitter Type - H01:
H-type - Fragments and objects made of hard plastic, plastic sheet or film.
N-type - Fragments of plastic lines, ropes, and fishing nets
P-type - Pre-production plastic pellets in the shape of a cylinder, disk or sphere
F-type - Fragments or objects made of foamed material (e.g. expanded polystyrene)

The plastic size classes and type categories used are after Lebreton et al. 2018 (https://www.nature.com/articles/s41598-018-22939-w#citeas). While I was not involved with data collection or processing, should you have any questions I'd be more than happy to forward these to the authors / my data provider.

Thank you in advance,

Tim

A number of P01 codes related to hydrocarbon mixtures have been mapped to P02 codes for "other organic contaminants" when it could have been mapped to P02 for hydrocarbons.
This affects mappings to P01 codes linked to:
CS002699 aliphatic petroleum hydrocarbons
CS003044 IMS PAH mixture I
CS002685 total petroleum hydrocarbons
CS002816 unresolved complex mixture

The H05 vocabulary does not contain definitions for the existing terms. We propose a definition for some of them based on the most recent literature:

Following the size ranges proposed at the TGML microlitter workshop, we would propose to review the whole vocabulary to improve the coherence of each class limits (i.e. 20-49; 50-99; 100-299 instead of 20-50; 50-100; 100-300)