National Pesticides Survey methods

Ocean Data Evaluation System (ODES) Data Submissions Manual QA/QC Guidance for Sampling and Analysis of Sediments Water and Tissue for Dredged Material Evaluations Chemical Evaluations Quality Assurance Plan for the National Pesticide Survey of Drinking Water Wells Analytical Method 2, Chlorinated Pesticides Quality Assurance Project Plan for Analytical Control and Assessment Activities in the National Study of Chemical Residues in Lake Fish Tissue... [Pg.177]

B92003 Quality Assurance Plan for the National Pesticide Survey of Drinking Water Wells Analytical Method 2, Chlorinated Pesticides 810B92001 Quality Assurance Project Plan for the National Pesticide Survey of Drinking Water Wells... [Pg.221]

The urea pesticides diuron, fluormeturon, neburon and Hnuron cited as potential groundwater contaminants from US EPA in the National Pesticide Survey were quantitatively determined by APCI-LC-MS(-t) [354]. APCI-LC-MS was also used to test for 46 pesticide compounds in shallow groundwater samples from two sandy and two clay catchment areas. Of the neutral polars observed, isopro-turon belonged to the most frequently found compound [351]. Sphid et al. described an APCI-LC-MS method for the determination of isoproturon and different types of pesticides and their degradation products in ground water samples. Detection Umits, recovery, precision and Hnearity data were reported [350]. [Pg.792]

A report entitled Chemical Trespass was issued in May 2004 by the Pesticide Action Network (Schafer et al., 2006). It contained detailed analysis of 2000/01 National Health and Nutrition Examination Survey (NHANES) OP urinary metabolite data and used published methods to estimate exposure levels to parent compounds from creatinine corrected urinary metabolite levels. They focused on chlorpyrifos and its metabolite 3,4,6-trichloro-2-pyridinol (TCP), and found that chlorpyrifos exposures for children ages 6-11 and 12-19 exceeded EPA s chronic population-adjusted dose (cPAD) by surprisingly wide margins. Geometric mean TCP levels were 3 to 4.6 times higher than the EPA-estimated safe dose, as shown in Fig. 14.2. The more heavily exposed children received daily doses more than ten times the safe level. [Pg.289]

Foreman, W. T., Connor, B. F., Furlong, E. T., Vaught, D. G., and Merten, L. M., 1995, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of Organochlorine Pesticides and Polychlorinated Biphenyls in Bottom Sediment by Dual Capillary-Column Gas Chromatography with Electron-Capture Detection, U.S. Geological Survey Open-File Report 95-140, 78 p. [Pg.45]

K. M. Eehlberg Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory Determination of pesticides in water by C-18 solid-phase extraction and capillary-column gas chromatography/ mass spectrometry with selected-ion monitoring U.S. Geological Survey Open-Eile Report 95-181, Denver, CO (1995) 49. [Pg.1467]