旧金山湾及萨克拉门托/圣华金河三角洲底栖双壳贝类中的砷。

Arsenic in benthic bivalves of San Francisco Bay and the Sacramento/San Joaquin River Delta.

作者信息

Johns C, Luoma S N

机构信息

U.S. Geological Survey, Menlo Park, CA 94025.

出版信息

Sci Total Environ. 1990 Nov;97-98:673-84. doi: 10.1016/0048-9697(90)90268-y.

DOI:10.1016/0048-9697(90)90268-y

PMID:2084842

Abstract

Arsenic concentrations were determined in fine-grained, oxidized, surface sediments and in two benthic bivalves, Corbicula sp. and Macoma balthica, within San Francisco Bay, the Sacramento/San Joaquin River Delta, and selected rivers not influenced by urban or industrial activity. Arsenic concentrations in all samples were characteristic of values reported for uncontaminated estuaries. Small temporal fluctuations and low arsenic concentrations in bivalves and sediments suggest that most inputs of arsenic are likely to be minor and arsenic contamination is not widespread in the Bay.

摘要

在旧金山湾、萨克拉门托/圣华金河三角洲以及一些未受城市或工业活动影响的选定河流中，测定了细颗粒、氧化的表层沉积物以及两种底栖双壳贝类（蚬属和波罗的海蛤）中的砷浓度。所有样本中的砷浓度均为未受污染河口所报告的值的特征。双壳贝类和沉积物中砷浓度的微小时间波动以及低浓度表明，砷的大多数输入可能较小，且砷污染在该海湾并不普遍。