Download or read book CEPA National Interlaboratory Comparison Study (CP-4) written by W. C. Li and published by . This book was released on 1994 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: "As part of the quality assurance program under the auspices of the Canadian Environmental Protection Act (CEPA), an interlaboratory comparison study (CP-4) for analysis of dioxins and furans in sediment extracts was designed and conducted by the Quality Assurance Group at the National Water Research Institute. Eight laboratories were sent five test samples. Each laboratory was requested to analyze 2,3,7,8-TCDD and 2,3,7,8-TCDF, and tetra-, penta-, hexa-, hept-, and octachlorinated dibenzo-p-dioxins and dibenzofurans; each homologue group in total in all test samples. Surrogate recoveries were also requested. Seven out of eight laboratories submitted results"--Abstract.