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008	190517e198804##onc    #o    f000 0 eng d
040	|aCaOODSP|beng|erda|cCaOODSP
041	|aeng|bfre
043	|an-cn---
086	1 |aEn13-5/88-112E-PDF
100	1 |aStokker, Yvonne D., |eauthor.
245	10|aSummary FICP report : |binterlaboratory study on the analysis of chlorophenols in natural waters / |cby Yvonne D. Stokker and A.S.Y. Chau.
246	10|aInterlaboratory study on the analysis of chlorophenols in natural waters
264	1|aBurlington, Ontario, Canada : |bNational Water Research Institute, Research and Applications Branch, Quality Assurance Group, |cApril 1988.
300	|a1 online resource (ii, 14 pages).
336	|atext|btxt|2rdacontent
337	|acomputer|bc|2rdamedia
338	|aonline resource|bcr|2rdacarrier
490	1 |aNWRI contribution ; |v88-112
500	|aTitle from cover.
500	|aDigitized edition from print [produced by Environment and Climate Change Canada].
520	3 |a"An interlaboratory study for the analysis of chlorophenols in natural waters was conducted for the Federal Interdepartmental Committee on Pesticides (FICP) Check Sample Program. Participants were requested to analyze for phenol and eight chlorinated phenols in five test samples. The results of the study indicated that most laboratories have the capability of performing sensitive and isomer-specific analysis for chlorophenols in water. Comparable satisfactory results were generated for pentachlorophenol and higher chlorinated phenols. In the analysis of phenol and the two monochlorophenols, however, the data for the "standard" solutions were considerably better than those for the water samples. Thus, it was believed that the extraction procedures and not the derivatization and analysis were most likely to be the major sources of error for these compounds in this study. The intralaboratory precision (or in-house reproducibility) for the majority of participating laboratories was very good. However, the interlaboratory precision (or between-lab repeatability) for the same compound was extremely poor. This would suggest that there could be a need for more accurate analytical standard solutions as well as external reference solutions to which they can be compared in order to monitor their accuracy over time. Lastly, this study also indicated that at least one laboratory could benefit from more stringent in-house quality control"--Abstract, page ii.
546	|aIncludes abstract and management perspective in English and French.
692	07|2gccst|aPesticides
692	07|2gccst|aWater quality
692	07|2gccst|aAnalysis
700	1 |aChau, A. S. Y. |q(Alfred Shun-Yuen), |d1941- |eauthor.
710	1 |aCanada. |bEnvironment Canada.
710	2 |aNational Water Research Institute (Canada). |bResearch and Applications Branch.
830	#0|aNWRI contribution ;|v88-112.|w(CaOODSP)9.844121
856	40|qPDF|s1.10 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-88-112-eng.pdf