+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Measurement of direct and indirect photolysis half-lives of several organic aquatic pollutants and oxidant concentrations using the PhotoFate system



Measurement of direct and indirect photolysis half-lives of several organic aquatic pollutants and oxidant concentrations using the PhotoFate system



Abstracts of Papers American Chemical Society 222(1-2): AGRO7



The PhotoFate system was used to independently investigate how the environmental fates of several test probes vary with natural water conditions. Changes in water quality resulted in a variation of the half-lives of the pollutants. Indirect photolysis half-lives in synthetic field water solutions ranged from 20.9-241.1 hours, 9.5-19.0 hours, 8.5-106.9 hours, 36.6-536.4 hours, and 15.7-82.3 hours for atrazine, clofibric acid, fluometuron, hexazinone and londax, respectively. The test conditions used enabled more realistic aquatic fate testing than those obtainable from current indirect photolysis testing guidelines. Using PhotoFate, the range of steady state concentrations of carbonate radicals in the test solutions was found to range from 4.7X10-14 to 5.6X10-13 M. Further testing of PhotoFate will involve measuring other aqueous oxidant concentrations as well as adapting it to aqueous toxicity testing. Our goal is to have a lab-based test system that accurately predicts the environmental fate of new drugs and pesticides.

(PDF emailed within 1 workday: $29.90)

Accession: 035268204

Download citation: RISBibTeXText


Related references

PhotoFate An indirect photolysis test system. Abstracts of Papers American Chemical Society 218(1-2): AGRO 26, 1999

PhotoFate: A New Approach in Accounting for the Contribution of Indirect Photolysis of Pesticides and Pharmaceuticals in Surface Waters. Environmental Science and Technology 37(5): 9-907, 2003

Indirect photolysis of persistent organic pollutants by Arctic dissolved organic matter. Abstracts of Papers American Chemical Society 226(1-2): ENVR 265, 2003

Is it possible to develop a QSPR model for direct photolysis half-lives of PAHs under irradiation of sunlight?. Environmental Pollution 114(1): 137-143, 2001

Absorption complexation of organic micro pollutants to aquatic humus influence of aquatic humus with time on organic pollutants and comparison of 2 analytical methods for analyzing organic pollutants in humus water. Science of the Total Environment 25(3): 245-254, 1982

Development of a novel passive sampling system for the time-averaged measurement of a range of organic pollutants in aquatic environments. Journal of Environmental Monitoring 2(5): 487-495, 2001

Adsorption/complexation of organic micropollutants to aquatic humus influence of aquatic humus with time on organic pollutants and comparison of two analytical methods for analysing organic pollutants in humus water. Science of Total Environment 25(3): 245-254, 1982

Direct and indirect effects of pollutants on algae and algivorous ciliates in an aquatic indoor microcosm. Aquatic Toxicology 88(2): 102-110, 2008

Electrochemical oxidation of organic pollutants for the wastewater treatment: direct and indirect processes. Chemical Society Reviews 35(12): 1324-1340, 2007

Polymer based RIFS sensing: An approach to the indirect measurement of organic pollutants in water. Fresenius' Journal of Analytical Chemistry 348(8-9): 598-601, 1994

Mechanism of photodegradation of aqueous organic pollutants 2. measurement of the primary rate constants for reaction of hydroxy radicals with benzene and some halobenzenes using an epr spin trapping method following the photolysis of hydrogen peroxide. Environmental Science and Technology 26(2): 262-265, 1992

Mechanism of photodegradation of aqueous organic pollutants. 2. Measurement of the primary rate constants for reaction of hydroxyl radicals with benzene and some halobenzenes using an EPR spin-trapping method following the photolysis of hydrogen peroxide. Environmental Science & Technology 26(2): 262-265, 1992

Modeling the concentrations of gas-phase toxic organic air pollutants: direct emissions and atmospheric formation. Environmental Science and Technology 28(1): 88-98, 1994

Correlation of the photolysis half-lives of polychlorinated dibenzo-p-dioxins and dibenzofurans with molecular structure. Journal of Physical Chemistry. a 114(7): 2684-2688, 2010

Prediction of photolysis half-lives of dihydroindolizines by genetic algorithm-multiple linear regression (GA-MLR). Journal of Physical Organic Chemistry 29(6): 312-320, 2016