00000nam 2200000za 4500 9.847973 CaOODSP 20241203113640 cr ||||||||||| 171128s1985 onca|||fo f000 0 eng d CaOODSP eng n-cn-on En13-5/85-64E-PDF Chau, Y. K. Occurrence and speciation of organometallic compounds in freshwater systems [electronic resource] / Y.K. Chau. Burlington, Ont. : Environmental Contaminants Division, National Water Research Institute, Canada Centre for Inland Waters, [1985]. 1 v. (various pagings) : ill. NWRI contribution ; no. 85-64 "Division Control No. ECD-6". "This manuscript has been submitted to Science of the Total Environment (Professor J.P. Riley Special Issue). The contents are subject to change". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "This is a review paper on the environmental occurrence of organometallic compounds and the recent developents in their speciation in water, sediment and biological samples. The sources of organometallic compounds are mainly from anthropogenic inputs and from biotic and abiotic methylation processes.The most sophisticated analytical methods for organometallic speciation are combination systems consisting of a separation technique coupled with an element-specific detector. The best systems to date are gas chromatography (GC) or liquid chromatography (LC) coupled with an atomic spectrometric detector in the absorption or emission mode with sensitivity in the sub-nanogram level.Techniques for quantitative extraction of ionic organometals, methods of derivatization and digestion of biological samples without destruction of the original chemical form are discussed. With these techniques, the occurrence of molecular and ionic alkyllead compounds (R= Me, Et) has been found for the first time in water, sediment and fish in areas of lead pollution"--Exec. summary. gccst Water quality gccst Water management Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 85-64 (CaOODSP)9.844121 PDF 2.55 MB https://publications.gc.ca/collections/collection_2017/eccc/En13-5-85-64-eng.pdf