||Evaluation of a Field Test Kit for Monitoring Lead in Drinking Water.
Schock, M. R. ;
George, G. K. ;
||Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div. ;Technology Applications, Inc., Cincinnati, OH.
Water pollution detection ;
Drinking water ;
Water chemistry ;
Chemical analysis ;
Performance evaluation ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The paper discusses important aspects of the conceptual design of evaluation of studies of the performance of proprietary analytical test kits for drinking water surveys and corrosion control studies. The Hach Lead-Trak test kit was tested for precision, accuracy, operator bias, and performance relative to a standard GFAAS methodology. A detection limit of 4 milligrams/L was observed, with generally accurate results for standards up to 100 milligrams/L. Best performance was found below 80 milligrams/L. Spike recoveries for 15 milligrams/L in six different drinking waters were good. Interferences from 13 important cations and eight important anions were tested for realistic concentrations. Calcium and sulfate caused positive bias; Zn, Fe, orthophosphate, tripolyphosphate and pyrophosphate caused significant negative bias. No operator bias was found. The test kit was extremely sensitive to the test pH, and failed on acidified samples.
||Pub. in Jnl. of the American Water Works Association, v85 n8 p90-100 Aug 93. Prepared in cooperation with Technology Applications, Inc., Cincinnati, OH.
|NTIS Title Notes
||Reprint: Evaluation of a Field Test Kit for Monitoring Lead in Drinking Water.
||PC A03/MF A01