Saher Noor Us, Siddiqui Asmat Saleem
Centre of Excellence in Marine Biology, University of Karachi, Karachi 75500, Pakistan.
Mar Pollut Bull. 2016 Apr 15;105(1):403-10. doi: 10.1016/j.marpolbul.2016.02.012. Epub 2016 Feb 11.
Heavy metals concentrations (Fe, Cu, Zn, Ni, Cr, Co, Pb, and Cd) were scrutinized during two monitoring years (2001 and 2011) in the coastal sediment of Pakistan. The status of metal contamination in coastal sediment was interpreted using sediment quality guidelines, and single and combined metal pollution indices. Ni, Cr, and Cd were recognized for their significant (p<0.05) intensification in the sediment during the last decade. Sediment quality guidelines recognized the frequent adverse biological effect of Ni and the occasional adverse biological effect of Cu, Cr, Pb and Cd. Single metal pollution indices (Igeo, EF, CF, and ER) revealed that sediment pollution is predominantly caused by Pb and Cd. Low to moderate contamination was appraised along the coast by multi-metal pollution indices (CD and PERI). Correlation study specifies that heavy metals were presented diverse affiliations and carriers for distribution in the sediment during the last decade.
在2001年和2011年这两个监测年份里，对巴基斯坦沿海沉积物中的重金属浓度（铁、铜、锌、镍、铬、钴、铅和镉）进行了详细审查。利用沉积物质量指南以及单一和综合金属污染指数来解读沿海沉积物中的金属污染状况。镍、铬和镉在过去十年间沉积物中的含量显著增加（p<0.05）。沉积物质量指南确认了镍对生物的频繁不利影响以及铜、铬、铅和镉对生物的偶尔不利影响。单一金属污染指数（地积累指数、富集因子、污染系数和生态风险指数）表明，沉积物污染主要由铅和镉造成。多金属污染指数（综合污染指数和潜在生态风险指数）评估出沿海地区存在低到中度污染。相关性研究表明，在过去十年中，沉积物中的重金属呈现出不同的关联和载体用于分布。
