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The Need for Accuracy in a Regulatory Agency
Accuracy and Trace Organic Analyses
Accuracy and Quality Control in Trace Element Analysis
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accuracy and precision Accuracy in Trace Anal analytical method ashing atomic absorption biological biotite blank blood lead bottles calcium certified Chem chemical Chemistry chromium clean laboratory clinical collection compounds concentration container detection detector determination dilution distilled effect electron emission environmental evaluation evaporation factors Figure filter Gaithersburg high-purity HNO3 isotope Issued August 1976 mass mass spectrometry measurement ment mercury mineral monitoring neutron activation analysis ng/g nitric nitric acid obtained organic oxidation parameters particulate percent pollution polyethylene potassium precision present problems procedures quantitative quartz reagents relative standard deviation reported residue Sample Handling sampler serum uric acid sodium solution specimen spectrometry spectroscopy SRM's standard deviation Standard Reference Materials storage sulfate sulfuric acid systematic error Table techniques Teflon temperature tion Trace Analysis trace element trace metals uric acid values water quality zinc