00000nam 2200000zi 4500 9.870136 CaOODSP 20241203113647 m o d f cr ||||||||||| 190319s2004 onc #ot f|0| 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/04-154E-PDF Leppard, Gary G., author. Water analysis : particle characterization / by Gary G. Leppard. [Burlington, Ontario] : Environment Canada, Water Science and Technology Directorate = Environnement Canada, Direction générale des sciences et de la technologie, eau, 2004. 1 online resource (9 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 04-154 Digitized edition from print [produced by Environment and Climate Change Canada]. Reprinted from Marine Geology, 37 (1980) 231-240. Includes bibliographical references. "Ultra-small particles in aquatic ecosystems are responsible for much of the transport and transformations of contaminants. These colloidal particles (0.001 to 1.0 um least diameter) are physically unstable, by virtue of their being ultra-small, thus causing electrical phenomena to dominate their aggregation/disaggregation behaviour. They tend to aggregate spontaneously when perturbed by physico-chemical changes in nature, thus altering their own settling properties and chemical activities. It is generally accepted that ultra-small particles must be characterized better than they have been, for an improved understanding of their important roles in aquatic ecosystems. The state-of- the-art technology for characterizing these particles has just been established, much of it by NWRl. This article reviews the new technology, and its "tunable" nature for use in a great variety of water types"--Abstract. Abstract and NWRI Research Summary in English and French. gccst Aquatic ecosystems gccst Water management Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; 04-154. (CaOODSP)9.844121 PDF 1.11 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-04-154-eng.pdf