In the late stage of leaching (5–7 d), the Zn content in the soil shows an increasing trend.
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Study on the release pattern of Zn in soil of ionic rare earth mining areas under different leaching conditions.
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The sentences
The Zn content in the soil showed a decreasing trend in the mid-late leaching stage (2–7 d), continuously decreasing from 23.20 mg/kg on day 2 to 13.11 mg/kg on day 7, a decrease of 56.3%.