00000nam 2200000zi 4500 9.870687 CaOODSP 20241203113647 m o d f cr bn||||||||| 190327s1991 onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on En13-5/91-73E-PDF Dutka, B. J., author. Nith River bioassay study / B.J. Dutka, A. Jurkovic, R. McInnis, K.K. Kwan and C. Taylor. Burlington, Ontario : National Water Research Institute = Institut national de recherche sur les eaux, [1991] 1 online resource (4 unnumbered pages, 12 pages, 5 unnumbered pages) : illustration. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 91-73 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Studies were carried out to evaluate the battery of tests approach and the use of simple solvent extraction procedures on waters and suspended particulates within a relatively unpolluted agricultural area. Many of the bioassays used, which were very responsive in other more polluted areas, were non responsive with the samples collected from the Nith River. The bioassay tests which were responsive were the ATP-TOX System, SOS-Chromotest with and without S9 activation and the Nematode test (Panagrellus redivivus). Solvent extraction procedures using 100% DMSO, 100% methanol and 10% DMSO with 10% methanol were also shown to be equally effective in extracting toxicants/genotoxicants from suspended particulates. They also produced greater responses in the bioassays compared to pore water and Milli-Q water extracts"--Abstract. Includes management perspective and abstract in French. gccst Rivers gccst Water quality gccst Bioassay Jurkovic, A., author. McInnis, R., author. Kwan, K. K., author. Taylor, C. M., author. Canada. Environment Canada. National Water Research Institute (Canada). Rivers Research Branch. National Water Research Institute (Canada) NWRI contribution ; no. 91-73. (CaOODSP)9.844121 PDF 1.74 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-91-73-eng.pdf