Impact of Long-Term Reclaimed Water Irrigation on the Distribution of Potentially Toxic Elements in Soil: An In-Situ Experiment Study in the North China Plain.

Int J Environ Res Public Health · 2019 · PMC6406732 · PMID 30813230

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a decreasing trendno p-value reported

Longer irrigation time (35 years and 22 years) resulted in a decreasing trend of As, Cd, Hg, Pb and Zn in lower part of soil profiles (>540 cm) compared with that with 13-years’ irrigation years.

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an increasing trendno p-value reported

The mean pH values display an increasing trend at topsoil (0–200 cm) and a decreasing trend on the soil profile below 200 cm.

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