2021 40 (3):  728-737    ISSN: 1004-5589:  CN: 22-1111/P
 Determination of heavy metal geochemical baseline value of surface soil in Yongcheng，Henan，and its accumulation characteristics
 ZHANG Yan，LI Yu-song
 1. Henan Institute of Geological Survey，Zhengzhou 450001，China;
2. Henan Geochemical Ecological Ｒestoration Engineering Ｒesearch Center，Zhengzhou 450001，China;
3. No. 2 Institute of Geo-environment Survey，Bureau of Geology and Mineral Exploration and Development of Henan Province，
Zhengzhou 450001，China
Received null  Revised null  Online 2021-08-25
Reference  null
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