02521cam 2200433zi 45009.879269CaOODSP20221107165452m o d f cr |||||||||||190913t19801980oncd #ob f000 0 eng d0662110773CaOODSPengrdaCaOODSPengfren-cn---En36-508/67E-PDFEn36-508/67EAgemian, Haig, author.Interlaboratory quality control study no. 24 : analysis of eight acid herbicides in natural fresh water / Haig Agemian and A.S.Y. Chau.Analysis of eight acid herbicides in natural fresh waterBurlington, Ontario : Inland Waters Directorate, Ontario Region, Water Quality Branch, 1980.©19801 online resource (vii, 9 pages) : graphs.texttxtrdacontentcomputercrdamediaonline resourcecrrdacarrierReport series ; no. 67Digitized edition from print [produced by Environment and Climate Change Canada].Includes bibliographical references (pages 6-8)."A national interlaboratory quality control study for Canadian laboratories on the determination of eight acid herbicides (MCPA; 2,4-DP; 2,4-D; silvex; MCPB; 2,4,5-T; 2,4-DB; and picloram) in natural fresh water is described. The data show that most laboratories have acceptable expertise for the analysis of silvex; 2,4,5-T; and 2,4-D. No data were reported for MCPB by any laboratory, while only a few participants reported results on MCPA; 2.4-DP; 2,4-DB; and picloram. The overall results indicate that most participants in this study had not attempted the analysis of all eight herbicides. This may reflect the limited expertise in multi-residue analysis of these herbicides in water at the designed concentrations"--Abstract, page v.Includes abstract in French.gccstHerbicidesgccstFresh watergccstQuality controlChau, A. S. Y. (Alfred Shun-Yuen), 1941- author.Canada. Environment Canada.Canada. Inland Waters Directorate. Ontario Region. Water Quality Branch.Report series (Canada. Inland Waters Directorate)no. 67.(CaOODSP)9.862410PDF630 KBhttps://publications.gc.ca/collections/collection_2019/eccc/en36-508/En36-508-67-eng.pdf