Influence of traffic activity on heavy metal concentrations of roadside farmland soil in mountainous areas.

Int J Environ Res Public Health · 2012 · PMC3386583 · PMID 22754468

Europe PMC DOI

hedged sentence

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closest p

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The sentences

a clear trendno p-value reported

It is found that there is a clear trend that both average and maximum Pi values of Pb are decreasing with the roadside distance.

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