School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.
Mar Pollut Bull. 2011 Jul;62(7):1557-61. doi: 10.1016/j.marpolbul.2011.05.015. Epub 2011 Jun 12.
Sediment samples collected from large harbours and public slipways on the island of Malta have been analysed for geochemically important metals (Al, Ca, Fe, Mn) and contaminant metals (As, Cd, Co, Cr, Cu, Ni, Pb, Sn, Zn) following fractionation (<63 μm) and digestion in aqua regia. Absolute and Al-normalised concentrations of contaminant metals exhibited relatively little dispersion both among different samples from the same location and between samples from different locations, notable exceptions including lower concentrations of Cr and Sn on the slipways than in the harbours. Sources of contaminant metals are attributed to diffuse and specific waste inputs from urban surroundings and boating and shipping activities. Overall, concentrations are similar to those reported for other large harbours in urban settings where equivalent sample fractionation-digestion has been performed. Relative to various sediment quality guidelines, Pb is predicted to exert the greatest threat to the marine environment of Malta.
从马耳他岛的大型港口和公共滑道收集的沉积物样本，经过（<63 μm）分级和王水消解后，分析了地球化学重要金属（Al、Ca、Fe、Mn）和污染金属（As、Cd、Co、Cr、Cu、Ni、Pb、Sn、Zn）。同种位置不同样本之间以及不同位置样本之间，污染金属的绝对浓度和 Al 归一化浓度的分散性都相对较小，值得注意的例外情况包括滑道上 Cr 和 Sn 的浓度低于港口。污染金属的来源归因于来自城市环境和划船及航运活动的弥散和特定废物输入。总体而言，浓度与在城市环境中进行等效样本分级-消解的其他大型港口报告的浓度相似。相对于各种沉积物质量指南，Pb 预计对马耳他海洋环境构成最大威胁。
