Alyazichi Yasir M, Jones Brian G, McLean Errol
School of Earth and Environmental Sciences, Wollongong University, Wollongong, NSW, Australia,
Environ Monit Assess. 2015 Feb;187(2):20. doi: 10.1007/s10661-014-4238-z. Epub 2015 Jan 28.
The distribution of trace metals (spatial and temporal) and sedimentary fractions were investigated to identify the concentrations and sources of trace metals within Kogarah Bay, NSW, Australia. A total of 59 surface sediments and six subsurface samples from core of the sediment were collected. The contamination factor and pollution load index indices used to evaluate environmental effects of trace metals. The study area was found to be uncontaminated with Cr and Ni, moderately contaminated with As and considerably contaminated with Cu, Zn and Pb. The concentrations of Cr and Ni were below both effect range low and effect range median, while As, Cu, Zn and Pb were slightly above effect range low. The highest concentrations of these trace metals such as Cu, Zn and Pb were found in the north, northwest and southeast of the bay, close to discharge points, stormwater outlets and around boatyards and watercrafts. The spatial distributions of metals were strongly related to muddy particles and organic matter. The temporal sediments of metals declined with increased sediment depth, which reflects accumulation of trace metals since European settlement in this area. Furthermore, the source of the trace metals was found to be stormwater outlets, gasoline fumes, boatyards and other human activities.
对澳大利亚新南威尔士州科加拉湾内痕量金属的分布（空间和时间）及沉积组分进行了调查，以确定痕量金属的浓度和来源。共采集了59个表层沉积物样本和6个取自沉积物岩芯的次表层样本。采用污染因子和污染负荷指数来评估痕量金属对环境的影响。研究区域被发现未受铬和镍污染，砷为中度污染，铜、锌和铅为重度污染。铬和镍的浓度低于效应范围低值和效应范围中值，而砷、铜、锌和铅略高于效应范围低值。这些痕量金属如铜、锌和铅的最高浓度出现在海湾的北部、西北部和东南部，靠近排放点、雨水排放口以及船厂和船只周围。金属的空间分布与泥质颗粒和有机物密切相关。金属的时间沉积物随沉积物深度增加而下降，这反映了自欧洲人在此定居以来痕量金属的积累。此外，痕量金属的来源被发现是雨水排放口、汽油烟雾、船厂和其他人类活动。
