孟加拉国吉大港桑库鲁河河口重金属污染基线研究。
Baseline study of heavy metal contamination in the Sangu River estuary, Chattogram, Bangladesh.
机构信息
Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh.
Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh.
出版信息
Mar Pollut Bull. 2019 Mar;140:255-261. doi: 10.1016/j.marpolbul.2019.01.058. Epub 2019 Jan 30.
Sediment samples were collected from twelve selected sites of the Sangu River estuary and seven metals (As, Cr, Cu, Cd, Pb, Ni, Zn) were analyzed with Inductively Coupled Plasma-mass Spectrometry (ICP-MS) to assess the contamination degree of heavy metals in the Sangu River estuary and to represent it as a reference site. This study revealed the descending order of studied metals (mg/kg) observed in sediment as Zn (88.97 ± 58.97) > Ni (32.75 ± 16.09) > Cu (29.2 ± 10.78) > Cr (25.14 ± 5.20) > Pb (19.57 ± 7.01) > As (2.58 ± 2.55). Cadmium was observed below the detection level. Various indices like geo-accumulation index (I), contamination factor (CF), pollution load index (PLI) suggested that the Sangu River estuary is not contaminated by studied metals excepting Pb. PCA and correlation matrix analysis indicates that Pb and Zn may have anthropogenic sources and As, Ni, Zn, Cu, Cr may come from natural sources.
从 sangu 河河口的 12 个选定地点采集了沉积物样本，并使用电感耦合等离子体质谱法 (ICP-MS) 分析了 7 种金属（砷、铬、铜、镉、铅、镍、锌），以评估重金属在 sangu 河河口的污染程度，并将其作为参考点。本研究表明，在所研究的金属（mg/kg）中，沉积物中观察到的降序为锌（88.97±58.97）>镍（32.75±16.09）>铜（29.2±10.78）>铬（25.14±5.20）>铅（19.57±7.01）>砷（2.58±2.55）。镉的含量低于检测水平。地质累积指数（I）、污染因子（CF）、污染负荷指数（PLI）等各种指数表明，除铅外，sangu 河河口未受到研究金属的污染。PCA 和相关矩阵分析表明，铅和锌可能具有人为来源，而砷、镍、锌、铜和铬可能来自自然来源。
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