Objective:To detect and evaluate lanthanum, cerium and neodymium in agricultural soil in Baotou suburb, and to provide scientific basis for the development and application of rare earth and the protection and utilization of soil resources in Baotou. Methods: According to the agricultural industry standard of the People's Republic of China, 6 samples from Machi Town and 5 samples from Shidagu Village of Shaerqin Town were randomly collected according to the plum blossom point method, and 19 test samples including standard series were made. The samples were pretreated by microwave digestion instrument, and the contents of lanthanum, cerium and neodymium in soil samples were determined by inductively coupled plasma mass spectrometry. The results were analyzed by Nemero index method. Results: The average content of lanthanum, cerium and neodymium in the soil of Machi Town was 20.45 mg/kg, 39.32 mg/kg and 16.97 mg/kg, respectively. The average content of lanthanum, cerium and neodymium in the soil of Shidagu Village in Shaerqin Town was 23.99 mg/kg, 46.31 mg/kg and 19.87 mg/kg, respectively. The single factor evaluation method was used to evaluate the pollution status of lanthanum, cerium and neodymium in soil, the Pi values of lanthanum, cerium and neodymium in the soil of Shidagu Village, Machi Town and Shaerqin Town were all less than 1. The Nemerow index method was used to evaluate the pollution of metal elements in surface soil, the comprehensive pollution index of land in Machi Town of Baotou City was 0.81, and the comprehensive pollution index of land in Shidagu Village of Shaerqin Town was 0.89, both of which were lower than the comprehensive pollution index of Gannan District. Conclusion: The overall agricultural soil in Shidagu Village and Machi Town, Shaerqin Town, Baotou City is in good condition and is not polluted by rare earth elements lanthanum, cerium and neodymium. Compared with Gannan area, the cleaning status of lanthanum, cerium and neodymium in agricultural soil of Baotou city is higher.
YANG Mingxuan
,
HUANG Wenliang
,
ZHANG Jianan
,
HOU Shuangyin
,
ZHAO Yuhang
,
SHI Xuemin
. Detection and evaluation of lanthanum, cerium and neodymium contents in agricultural soil in Baotou suburb[J]. Journal of Baotou Medical College, 2025
, 41(4)
: 1
-5
.
DOI: 10.16833/j.cnki.jbmc.2025.04.001
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