@article{chaves_shea_danehower_2008, title={Analysis of chlorothalonil and degradation products in soil and water by GC/MS and LC/MS}, volume={71}, ISSN={["0045-6535"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-39849092250&partnerID=MN8TOARS}, DOI={10.1016/j.chemosphere.2007.11.015}, abstractNote={We present a method using gas chromatography (GC) and liquid chromatography (LC) coupled to a mass selective detector to measure concentrations of the fungicide chlorothalonil and several of its metabolites in soil and water. The methods employed solid-phase extraction using a hydrophobic polymeric phase for the isolation of analytes. In lake water, average analyte recoveries ranged from 70% to 110%, with exception of pentachloronitrobenzene that gave low recoveries (23%). The method detection limits were determined to be in the range of 1 and 0.1 μg l−1 for the LC and GC methods, respectively. In soil samples, recoveries ranged from 80% to 95% for 4-hydroxy-2,5,6-trichloroisophthalonitrile (metabolite II) and 1,3-dicarbamoyl-2,4,5,6-tetrachlorobenzene (metabolite III). Limits of detection (LOD) were 0.05 and 0.02 μg g−1, respectively. Chlorothalonil and other metabolites were analyzed by GC giving recoveries ranging from 54% to 130% with LOD of 0.001−0.005 μg g−1.}, number={4}, journal={CHEMOSPHERE}, author={Chaves, Alicia and Shea, Damian and Danehower, David}, year={2008}, month={Mar}, pages={629–638} }