Heavy metal pollution and human health risk assessment at mercury smelting sites in Wanshan district of Guizhou Province, China.

53 Pearson correlation analysis of shallow-soil HMs concentration showed ( Table 3 ) that As and Be, As and Zn were highly significant ( P < 0.01) with correlation coefficients of 0.723 and 0.616, respectively, but Be and Zn were not correlated, indicated that As had two sources.

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52 Significant or extremely significant correlations between HMs indicated the presence of homologous or compound contamination. 53 Pearson correlation analysis of shallow-soil HMs concentration showed ( Table 3 ) that As and Be, As and Zn were highly significant ( P < 0.01) with correlation coefficients of 0.723 and 0.616, respectively, but Be and Zn were not correlated, indicated that As had two sources.

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