Abstract:

This dataset reports concentrations of propylene glycol (PG) and 2-butoxythanol from a series of photodegradation experiments conducted to determine the contribution of direct and indirect photolysis via hydroxyl radical to compound degradation. Data are reported for low pressure (LP) and medium pressure (MP) mercury vapor ultraviolet light at multiple UV doses in Gulf of Mexico Seawater and Boulder creek surface water. Concentrations of PG and BE are included under a solar simulator after 4 different irradiance times. PG and BE concentrations were determined in advanced oxidation process (AOP) experiments by spiking the sample matrix of Gulf of Mexico Seawater and Boulder creek surface water or ultrapure water with H2O2 at 5 UV doses. This dataset also includes percent removal of PG and BEG in Gulf of Mexico Seawater and Boulder Creek water as a function of exposure time. This dataset supports the paper Kover, S. C., Rosario-Ortiz, F. L., and Linden, K. G. (2014) Photochemical fate of solvent constituents of Corexit oil dispersants. Water Research, 52, 101–111. doi:10.1016/j.watres.2013.12.013 DOI:10.1016/j.watres.2013.12.013.

Suggested Citation:

Kover, Stephanie, Karl Linden. 2017. Dataset for: Photochemical fate of solvent constituents of Corexit oil dispersants. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N70C4T5W

Publications:

Kover, S. C., Rosario-Ortiz, F. L., & Linden, K. G. (2014). Photochemical fate of solvent constituents of Corexit oil dispersants. Water Research, 52, 101–111. doi:10.1016/j.watres.2013.12.013

Parker, A. M., Ferrer, I., Thurman, E. M., Rosario-Ortiz, F. L., & Linden, K. G. (2014). Determination of COREXIT components used in the Deepwater Horizon cleanup by liquid chromatography-ion trap mass spectrometry. Anal. Methods, 6(15), 5498–5502. doi:10.1039/c4ay00257a

Purpose:

The purpose of this study was to determine the potential for the degradation of Corexit through sensitized photolysis in ocean water samples.

Data Parameters and Units:

2BE_CompKin_Series2.xlsx - 2-Butoxyethonol (50mg/L) , sampled in duplicate at UV doses of 0, 100, 200, 300, 400 mJ/cm2 where replicates are sample 0a, 0b, 100a, 100b, 200a, 200b, 300a, 300b, 400a, 400b, probe compound para-chlorobenzoic acid (pCBA) (50mg/L), peak area, sample matrix (Gulf of Mexico Seawater), sample volume (100 mL), indirect photolysis, direct photolysis. Absorbance correction.xlsx - PG (propylene glycol)and 2-BE(2-butoxyethanol) absorption (unitless) and transmittance with and without H2O2 (hydrogen peroxide) from 200-400 wavelength. BoulderCreek_AOPCompilation(2).xlsx - advanced oxidation of PG (propylene glycol)and 2-BE(2-butoxyethanol)in Gulf of Mexico Seawater (Sea) and Boulder Creek water (Bcreek), indirect photolysis sampled in duplicate at UV doses of 0, 500, 1000, 1500, 2000 mJ/cm2 where replicates are samples 0a, 0b, 500a, 500b, 1000a, 1000b, 1500a, 1500b, 2000a, 2000b, peak area, concentration (mg/L). BoulderCreek_Compilation.xlsx - indirect photolysis of PG (propylene glycol)and 2-BE(2-butoxyethanol) in low pressure (LP) and medium pressure (MP) system exposed in duplicate at UV doses of 0, 500, 1000, 1500, 2000 mJ/cm2 where replicates are samples 0a, 0b, 500a, 500b, 1000a, 1000b, 1500a, 1500b, 2000a, 2000b in Boulder Creek water (BC), Gulf of Mexico Seawater (Sea). Compounds 2-7 OH or e-kinetics summary.xlsx - OH, k (degradation rate mJ/cm2), and temp for 5 compounds, chemical structures for 5 compounds CT modeling - percent removal (%) as function of [HO*]ss and exposure time (ct); experiment = (2-BE(2-butoxyethanol) or PG (propylene glycol) in Boulder Creek water or Gulf of Mexico Seawater LP UV (low pressure), AOP (advanced oxidation)) [HO[ss](M), UV dose (mJ cm-2), Ct (M mJ cm-2), percentage remaining, percentage removed, irradiation time (sec), irradiation time (minutes), Ct (M Min), kOH (hydroxyl radical reaction rate constant) (M-1 s-1) (M-1 m-1). OHss for all experiments.xlsx - Seawater (Gulf of Mexico Seawater), BCreek (Boulder Creek water), (experiment description (LP UV (low pressure), MP UV(medium pressure), PG (propylene glycol) 2-BE(2-butoxyethanol) Solar sim (solar simulator), C (mg/L), C(M), kOH(M-1 S-1); AOP Expt's - Sea (Gulf of Mexico Seawater), Bcreek (Boulder creek water), Ultrapure (ultrapure water), experiment description (AOP(advanced oxidation processes), LP UV (low pressure), MP (medium pressure), PG (propylene glycol) 2-BE(2-butoxyethanol)), [Ohss] (hydroxyl radical steady state concentration). PG_2BE_MolarAbsCoeffs_pCBA.xlsx - wavelength (nm), absorbance (y) (unitless), PG (propylene glycol), 2-BE(2-butoxyethanol), para-chlorobenzoic acid (pCBA), concentration (mg/L), molar mass (g/mol), concentration (mol/L), n (replicates). Seawater_AOPCompilation.xlsx - 2-Butoxyethonol (50mg/L) and PG (propylene glycol) advanced oxidation processes in Gulf of Mexico Seawater indirect photolysis in duplicate at UV doses of 0, 500, 1000, 1500, 2000 mJ/cm2 where replicates are samples 0a, 0b, 500a, 500b, 1000a, 1000b, 1500a, 1500b, 2000a, 2000b, peak area, concentration (mg/L). Solar Sim Seawater Experiment.xlsx - 2-Butoxyethonol (50mg/L) and PG (propylene glycol), time irradiated (hour, minute, hour (total)), peak area, concentration (mg/L).

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