Temporal-spatial trends in potentially toxic trace element pollution in farmland soil in the major grain-producing regions of China.

Sci Rep · 2019 · PMC6923405 · PMID 31857612

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an increasing trendno p-value reported

There was an increasing trend in the PTE concentrations, especially Cd with a growth of 21–25%, and in the proportion of mixed pollution at the sites (19.3%), Cd (21.5%), Pb (3.6%), Zn (5.7%), Cu (7.0%), and Hg (3.1%).

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