摘要:
本文用ICP-AES分析了泉州湾潮滩表层沉积物中9种重金属元素(Fe,Mn,Cr,Cu,Ni,Co,Pb,Zn,V)的酸可提取量,测定了沉积物的粒度组成及其TOC,S2-和CaCO3含量.相关分析表明,潮滩沉积物中酸可提取重金属主要来源于沿岸工农业废水排放及滩涂养殖用药,尤其是Zn,Pb,Cu,与国内其它海湾和河口相比存在明显富集,受人类活动影响较大;沉积物中酸可提取重金属主要存在于细颗粒中,且主要与无定型铁氧化物及有机质结合.
Abstract:
The article presents the results of the distribution and enrichment of acid-leachable heavy metals(ALHMs)in the tidal sediments from Quanzhou bay,southeast of China. ALHMs of Fe,Mn,Cr,Cu,Ni,Co,Pb,Zn and V along with sediment texture,TOC,S2-and CaCO3 in surface sediments were analyzed to identify the input of trace metals from various sources. The enrichment of ALHMs in the tidal sediments is mainly attributed to the intense industrial activities around Quanzhou bay,and to the serried activities of intertidal breed aquatics along the bay. Comparative results of ALHMs with other domestic estuarine regions also indicate that the study area has been enriched with heavy metals,especially with Zn,Cu and Pb during the past two decades. The statistical correlation analysis indicates the ALHMs' association with the finer fractions,TOC and Fe oxyhydroxides.
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