00000nam 2200000za 4500 9.850099 CaOODSP 20241203113641 cr ||||||||||| 180116s1986 onca|||fob f000 0 eng d CaOODSP eng eng fre n-cn--- En13-5/86-178-1E-PDF Metabolism of trialkyllead and dialkyllead compounds by a freshwater alga, Ankistrodesmus falcatus [electronic resource] / P.T.S. Wong ... [et al.]. Burlington, Ont. : Environmental Contaminants Division, National Water Research Institute, Canada Centre for Inland Waters, [1986]. 12, [3] p. : ill. NWRI contribution ; no. 86-178 "Division Control No. ECD-128B". "This manuscript has been submitted to Journal of Fisheries and Aquatic Science and the contents are subject to change". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references: p. 10-11. "A freshwater alga, Ankistrodesmus falcatus, exposed to solutions of trialkyllead, dialkyllead and lead (II) compounds (1 mg/L), was found to accumulate these compounds with concentration factors of 100, 2000, and 20,000 respectively. Incubation of the alga in trimethyllead and dimethyllead over a long period (28 days) revealed the ability of the organism to metabolize these compounds. The metabolic processes for trimethyllead follow adealkylation sequence with the formation of dimethyllead and lead(II). In the case of dimethyllead, the alga was found notonly to accumulate dimethyllead, but also to produce significant amounts of trimethyllead and lead (II). Neither chemical disproportionation reactions nor photo-decomposition can account for the quantities of these compounds produced. The results suggest that algae can play an important role in the cycling of organic lead compounds in aquatic ecosystems"--Exec. summary. Includes executive summary in French. gccst Water quality gccst Water management gccst Aquatic plants Wong, P. T.- S., 1939- . Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 86-178 (CaOODSP)9.844121 PDF 1.09 MB https://publications.gc.ca/collections/collection_2018/eccc/En13-5-86-178-1-eng.pdf