Spatial-temporal distribution and risk assessment of mercury in different fractions in surface sediments from the Yangtze River estuary.
作者： Qingrui Wang , Ruimin Liu , Cong Men , Fei Xu , Lijia Guo
DOI: 10.1016/J.MARPOLBUL.2017.07.034
关键词:
摘要: The temporal and spatial distributions of mercury in different fractions its potential ecological risk were investigated sediments from the Yangtze River estuary (YRE) by analyzing data collected study area. results showed that organic residual had dominant proportions, 15.2% to 48.52% 45.96% 81.59%, respectively. more susceptible seasonal changes than other fractions. Higher proportions fraction found wet seasons; opposite was true for fraction. With respect distribution, concentration exchangeable, carbonate Fe-Mn oxide a decreasing trend inner outer estuary, but no obvious trends assessment code (RAC) used evaluate area based on exchangeable average RAC values during four periods 6.00%, 2.20%, 2.83%, 0.61%. Although these show is generally low, distribution indicates has medium risk, with value up 10%.
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