胶州湾潮间带表层沉积物重金属污染评价

发布时间：2018-05-17 07:42

本文选题：胶州湾 + 沉积物　；参考：《中国环境科学》2017年06期

【摘要】：采集了胶州湾潮间带29个表层沉积物样品,采用电感耦合等离子质谱法(ICP-MS)分析了沉积物中重金属元素Cu、Pb、Zn、Cr、Cd、As的含量,讨论了其分布特征、主要来源及污染程度.结果表明:Cu、Pb、Zn、Cr、Cd和As的平均含量分别为38.8、55.2、107.4、69.9、0.44、9.2mg/kg;污染指数(CF)依次为CdPbZnAsCuCr,研究区东北部的污染较为严重;污染负荷指数(PLI)反映出72.4%的站位存在污染,区域污染负荷指数(PL_(Izone))表明潮间带总体污染程度为中等污染;潜在生态危害指数(Eri)依次为CdPbCuAsZnCr.综合潜在生态危害指数(RI)显示51.7%的站位属于低生态危害,24.1%的站位属于中等生态危害,17.2%的站位属于较高生态危害,7.0%的站位属于很高生态危害,其中Cd是首要的潜在生态风险因子.交通、农业和工业污染是研究区重金属的主要来源,建议加强对污染物来源的控制,同时对污染严重区域(特别是东北部)进行人工调控.
[Abstract]:Twenty-nine surface sediment samples from intertidal zone of Jiaozhou Bay were collected. The contents of heavy metal element CuPbPbZZCrCrCrCrCrCrCrCrCrCrCrCrCrCrCrCrCrCrCrCr-CdAs in sediments were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS). The distribution characteristics, main sources and pollution degree of the heavy metal elements were discussed. The results showed that the average contents of CD and as were 38.8% (55.2107.4%) and 0.449 mg / kg (CFC), respectively. The pollution index (CFC) was CdPbZnAsCuCr.The pollution load index (PLI) showed that 72.4% of the stations were polluted. The regional pollution load index (PLP) indicates that the total pollution level in the intertidal zone is moderate and the potential ecological hazard index (Erig) is CdPbCuAsZnCr. The comprehensive potential ecological hazard index (RI) showed that 51.7% of the stations belonged to low ecological hazards (24.1%), and 17.2% of the stations belonging to moderate ecological hazards (17.2%) belonged to high ecological hazards (7.0%), among which CD was the primary potential ecological risk factor. Traffic, agriculture and industrial pollution are the main sources of heavy metals in the study area.
【作者单位】：中国石油大学(华东)地球科学与技术学院;青岛海洋科学与技术国家实验室—海洋矿产资源评价与探测技术功能实验室;中国科学院海洋研究所海洋地质与环境重点实验室;国家深海基地管理中心;
【基金】：国家自然科学基金资助项目(41430965) 山东省自然科学基金资助项目(ZR2016DM08) 中国科学院海洋地质与环境重点实验室开放基金资助项目(MGE2016KG08) 青岛市基础研究计划项目(13-1-4-197-jch)
【分类号】：X55;X820

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