An interlaboratory study of quantitation procedures for the analysis of water and wastewater for organo-chlorine pesticides by gas chromatography–electron capture detector
| Autor: | David Eugene Kimbrough |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Detection limit
Analyte Chromatography Chemistry Health Toxicology and Mutagenesis Extraction (chemistry) Public Health Environmental and Occupational Health Soil Science chemistry.chemical_element Pesticide Pollution Analytical Chemistry Electron capture detector Wastewater Chlorine Environmental Chemistry Gas chromatography Waste Management and Disposal Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 91:945-959 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067310903509294 |
| Popis: | An interlaboratory study was conducted to assess two widely used procedures for estimating quantitation levels. Six laboratories participated in the analysis of artificially prepared water samples for organo-chlorine compounds by liquid-liquid extraction followed by gas chromatography–electron capture detector using USEPA Method 608. The study consisted of three phases, including six months of results from analyte free samples, the replicate analysis of fortified samples at a single concentration by the laboratory, and finally the analysis of blind fortified samples prepared by a third party. Estimated detection and quantitation limits (Currie's LC and LQ and USEPA's MDL and ML) were determined for each laboratory-method-analyte combination and then compared to the observed detection and quantitation limits. The overwhelming majority of analyte free samples had a reported value of zero. As a result, observed quantitation and detection limits were frequently zero. When they were not zero, the observed quan... |
| Databáze: | OpenAIRE |
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