Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, PR China.
J Hazard Mater. 2010 Nov 15;183(1-3):155-64. doi: 10.1016/j.jhazmat.2010.07.005. Epub 2010 Aug 1.
A geochemical study of Bohai Bay surface sediments was carried out to analyze the potential harmful element (PHE: Ge, Mo, In, Sn, Sb, Te, Tl, Bi and V) concentrations, transportation and deposition, enrichment factors and sources. Germanium, Mo, In, Sn, Sb, Te, Tl, Bi and V concentrations in the surface sediments were: 1.43-1.71, 0.52-1.43, 0.04-0.12, 2.77-4.14, 1.14-2.29, 0.027-0.085, 0.506-0.770, 0.27-0.63 and 70.35-115.90 μg/g, respectively. The distributions of total PHE concentrations, together with sequential extraction analyses, showed that the PHEs were mainly due to natural inputs from the continental weathering delivered to the bay by rivers and atmospheric transportation and deposition. However, high Mo, Sb, Te, Bi and V occurred in non-residual fractions, suggesting some anthropogenic inputs in addition to the natural inputs. Besides sources, the distributions of PHEs were influenced by the coupling of physical, chemical and biological processes. Enrichment factor (EF) was computed for each site for each element in order to assess the polluting elements and the degree of pollution at each site. Results revealed that the EFs were generally lower than 1.0, particularly for Ge, Mo, In, Sn, Tl and V; however, the EFs were higher (>1.5), particularly for Sb, Te and Bi, revealing moderate contamination.
对渤海湾表层沉积物进行了地球化学研究，分析了潜在有害元素（PHE：Ge、Mo、In、Sn、Sb、Te、Tl、Bi 和 V）的浓度、迁移和沉积、富集因子和来源。表层沉积物中 Ge、Mo、In、Sn、Sb、Te、Tl、Bi 和 V 的浓度分别为：1.43-1.71、0.52-1.43、0.04-0.12、2.77-4.14、1.14-2.29、0.027-0.085、0.506-0.770、0.27-0.63 和 70.35-115.90μg/g。总 PHE 浓度的分布以及顺序提取分析表明，PHE 主要是由于大陆风化作用通过河流和大气输送和沉积向海湾输送的自然输入。然而，高 Mo、Sb、Te、Bi 和 V 存在于非残留部分，表明除了自然输入外，还有一些人为输入。除了来源，PHE 的分布还受到物理、化学和生物过程的耦合影响。为了评估每个地点的污染元素和污染程度，为每个元素计算了每个地点的富集因子（EF）。结果表明，EF 一般低于 1.0，特别是对于 Ge、Mo、In、Sn、Tl 和 V；然而，EF 较高（>1.5），特别是对于 Sb、Te 和 Bi，表明中度污染。
