Presley, Bobby Joe, and Kuo-Tung JiannJensen, Richard W. Russell W. Kiesling, and Frank S. ShipleyProceedings: The Second State of the Bay Symposium. February 4 - 6, 19932010-02-152010-02-151993http://hdl.handle.net/1969.3/24122pgs. 127-131Sediments and organisms are usually more reliable and more convenient media for trace metal analysis than is water. Even polluted bay and estuarine water is very low in trace metal concentration, making it difficult to analyze reliably. Furthermore, concentrations in water are subject to rapid changes with changing metal inputs. Sediments and organisms have higher metal concentrations and they integrate values over time so less frequent sampling is needed.indicatorstrace metalschemical pollutantsindicator speciesoystersdataChapter