The Application of Tris Buffer and Copper Sulfate for the Preservation of Phenylurea Pesticides Analyzed Using U.S. EPA Method 532 in the UCMR Survey
| العنوان: | The Application of Tris Buffer and Copper Sulfate for the Preservation of Phenylurea Pesticides Analyzed Using U.S. EPA Method 532 in the UCMR Survey |
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| المؤلفون: | Steve C. Wendelken, David J. Munch, Barry V. Pepich, Margarita V. Bassett, Teri A. Dattilio |
| المصدر: | Environmental Science & Technology. 36:1809-1814 |
| بيانات النشر: | American Chemical Society (ACS), 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Tris, Copper Sulfate, Disinfectant, Antidotes, chemistry.chemical_element, Buffers, Specimen Handling, chemistry.chemical_compound, Water Supply, Chlorine, Environmental Chemistry, Pesticides, Tromethamine, Water pollution, Chromatography, High Pressure Liquid, Chromatography, Phenylurea Compounds, Chemistry, Extraction (chemistry), General Chemistry, Copper, Environmental chemistry, Water quality, Water Pollutants, Chemical, Environmental Monitoring |
| الوصف: | A high performance liquid chromatographic method was developed to meetthe U.S. Environmental Protection Agency's (EPA) Unregulated Contaminant Monitoring Rule (UCMR) Survey need for the analysis of phenylurea pesticides in drinking waters. Many of these phenylurea compounds were demonstrated to degrade rapidly in the presence of the residual chlorine disinfectant in drinking waters. This degradation was halted by the addition of a tris buffer, which was initially chosen to optimize the sample pH prior to extraction. Copper sulfate was found to prevent the regrowth of microorganisms in surface waters, which was observed upon dechlorination. Tris buffer provided the additional benefit of keeping the copper sulfate preservative in solution even in groundwater matrices that caused precipitation of copper in its absence. A C18 solid phase, in cartridge or disk form, was used to efficiently extract target compounds from the preserved drinking water matrices. A 21-day storage stability study, together with precision and accuracy studies, demonstrated thatthis method had suitable sensitivity, selectivity, accuracy, precision, and ruggedness for use in the EPA's UCMR drinking water occurrence survey. |
| تدمد: | 1520-5851 0013-936X |
| DOI: | 10.1021/es0156845 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68873e673a6ba1374e4ec8c6bfadb6f4 https://doi.org/10.1021/es0156845 |
| رقم الانضمام: | edsair.doi.dedup.....68873e673a6ba1374e4ec8c6bfadb6f4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205851 0013936X |
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| DOI: | 10.1021/es0156845 |