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Hi there 👋

I'm a research engineer at the University of Iowa, and I use R and RStudio to perform statistical analyses and develop mathematical models to try to understand the behavior of polychlorinated biphenyls (PCBs) and other persistent organic pollutants in the environment, as well as in cell experiments. Visit my Google Schoolar to learn more about my research here.

Left photograph shows predicted air/water fluxes of total PCBs from IHSC and left plot shows the temporal distribution of airborne PCB11 in Chicago for 2009 [REFs: Martinez et al., (2002) (https://doi.org/10.1016/j.scitotenv.2021.151505) and Martinez et al., (2019) (https://doi.org/10.1016/j.envpol.2018.10.048)].

Andres Martinez's Projects

adipose-partitioning icon adipose-partitioning

R code to determine the fraction of individual PCBs in 24-well plate setup experiments. This code is part of Project 2 of the ISRP (https://iowasuperfund.uiowa.edu/).

individual-pcb-flux-lake-michigan icon individual-pcb-flux-lake-michigan

R code to calculate the air-water flux of individual PCB congeners from southern Lake Michigan from air and water active samples from September 2010. This is part of Project 4 of the ISRP (https://iowasuperfund.uiowa.edu/).

metab-partitioning icon metab-partitioning

R code to determine the fraction of individual PCBs in 24-well plate setup experiments. This code is part of Project 1 of the ISRP (https://iowasuperfund.uiowa.edu/).

monte-carlo-fugacity-ratios icon monte-carlo-fugacity-ratios

New version of codes to calculate individual PCB fugacity ratios from IHSC, where data are available from Pangaea. This is part of Project 4 of the ISRP (https://iowasuperfund.uiowa.edu/).

pcb-flux-calculations icon pcb-flux-calculations

New version of codes to calculate individual PCB air-water fluxes from IHSC, where data are available from Pangaea. This is part of Project 4 of the ISRP (https://iowasuperfund.uiowa.edu/).

pcb-flux-lake-michigan icon pcb-flux-lake-michigan

R code to calculate the air-water flux of total PCB congeners from southern Lake Michigan from air and water active samples from September 2010. This is part of Project 4 of the ISRP (https://iowasuperfund.uiowa.edu/).

pcb-reactive-transport-model icon pcb-reactive-transport-model

The Polychlorinated Biphenyl (PCB) Reactive Transport Model produces simulations of congener-specific PCB concentration in the aqueous and gas phase of laboratory-scale bioreactors containing PCB-contaminated sediment slurry. The script uses experimental passive sampler measurements and a minimization of least squares procedure to fit congener-specific adsorption and desorption coefficients to the model. Finally, the model can simulate the reduction in volatile release of PCBs from sediment slurry to air resulting from the presence of an aerobic PCB-degrading microorganism with a known PCB biotransformation rate. This is part of Project 5 of the ISRP (https://iowasuperfund.uiowa.edu/)

pcbwaterproject icon pcbwaterproject

R codes developed for PCB water concentrations in USA. Codes describe how to create maps and figures, as well as all the statistical analyses. All data are available and download from Pangaea. This is part of Project 4 of the ISRP (https://iowasuperfund.uiowa.edu

pcbwaterprojectv02 icon pcbwaterprojectv02

R codes developed for PCB water concentrations in USA. Codes describe how to create maps and figures, as well as all the statistical analyses. All data are available and download from Pangaea. This is part of Project 4 of the ISRP (https://iowasuperfund.uiowa.edu

phpcbfluxes icon phpcbfluxes

R codes use to estimate PCB fluxes from Portland Harbor. Codes include a Monte Carlo simulation. This is part of Aim 3, Project 4 of the ISRP (https://iowasuperfund.uiowa.edu/)Code to estimate PCB fluxes from PH water

pk-sim icon pk-sim

PK-Sim® is a comprehensive software tool for whole-body physiologically based pharmacokinetic modeling

r-codes-for-east-chicago-pcb-soil-analysis icon r-codes-for-east-chicago-pcb-soil-analysis

R codes developed for East Chicago PCB soil paper. Codes describe how to create the maps and figures (ECSoilFigures.R), as well as all the statistical analyses (ECSoilStatTest.R) performed in the paper. All data are available and download from Pangaea. This is part of Project 6 of the ISRP (https://iowasuperfund.uiowa.edu/)

r-codes-for-east-chicago-soil-pcb-analysis icon r-codes-for-east-chicago-soil-pcb-analysis

R codes developed for East Chicago PCB soil paper. Codes describe how to create the maps and figures (ECSoilFigures.R), as well as all the statistical analyses (ECSoilStatTest.R) performed in the paper. All data are available and download from Pangaea. This is part of Project 6 of the ISRP (https://iowasuperfund.uiowa.edu/)

suite icon suite

Open Systems Pharmacology Suite Setup

wristbandproject icon wristbandproject

R codes used to calculate WB sampling rates for individual PCB congeners under static and rotating condition. This is part of Project 3 of the ISRP (https://iowasuperfund.uiowa.edu/)

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