主成分分析法用于福建沿海牡蛎体内主要污染物的研究

Study on the primary pollutants in oysters from Fujian coast based on principal component analysis

摘要: 2018年8—9月,从福建省沿海6个设区市17个主要贝类养殖海域抽取17份牡蛎样品。调查发现部分养殖海域中的牡蛎样品体内Cu和PHCs的含量超出第二类海洋生物质量标准。通过相关性分析发现铜和镉、铅和石油烃、六六六和PCBs以及铜和石油烃均呈现为正的强相关关系。通过对各检验参数进行主成分分析,结果显示三个主成分因子方差贡献率分别为29.436%、24.938%和15.838%,累计贡献率达到70.211%。铜、汞和PCBs为福建沿海牡蛎体内主要污染物的主要驱动因素。

Abstract: From August to September 2018, 17 oyster samples were selected from 17 major shellfish cultivation areas in 6 coastal cities of Fujian Province. The investigation found that the concentration of Cu and PHCs in oyster samples from some cultured sea areas exceeded the second class marine biological quality standard. The correlation analysis showed that there was a strong positive correlation between Cu and Cd, Pb and PHCs, BHC and PCBs, as well as Cu and PCBs. Through the principal component analysis of the test parameters, the variance contribution rates of the three principal component factors were 29.436%, 24.938% and 15.838% respectively, and the cumulative contribution rate reached 70.211%. Cu, Hg and PCBs were the main driving factors of primary pollutants in oysters from Fujian coast.