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| Characteristics and Causes of Heavy Metal Pollution in Soil Around Lead-Zinc Smelters in China |
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Received:August 29, 2022
Revised:September 05, 2022
Accepted:September 06, 2022
Published Online:December 19, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2023.01.007 |
| KeyWord:lead-zinc smelter; soil; heavy metals; pollution characteristic; cause |
| Author | Institution |
| WAN Si |
湖南有色金属研究院有限责任公司;湖南有色金属研究院有限责任公司 |
| YUAN Cui-yu |
湖南有色金属研究院有限责任公司;湖南有色金属研究院有限责任公司 |
| WANG Bing |
湖南有色金属研究院有限责任公司 |
| CHEN Huan-yu |
湖南有色金属研究院有限责任公司 |
| DENG Pin |
湖南有色金属研究院有限责任公司 |
| LI Qian |
湖南有色金属研究院有限责任公司 |
| YOU Ping |
湖南有色金属研究院有限责任公司 |
| ZHOU Rui |
湖南有色金属研究院有限责任公司 |
| WU Si-rong |
湖南有色金属研究院有限责任公司 |
| WU Huan |
湖南有色金属研究院有限责任公司 |
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| Abstract: |
| Heavy metals data of 1 551 surface soil samples around 32 lead-zinc smelters in China were collected. The characteristics and causes of heavy metal pollution were analyzed from a national scale. The results show that the average values of lead, zinc, cadmium, arsenic, nickel, chromium, copper, and mercury in soil are 396.35, 605.15, 13.91, 27.07, 28.66, 79.38, 59.73 and 0.42 mg/kg. The content range of lead, zinc, cadmium, arsenic, nickel, chromium, copper and mercury are 9.33~9 280, 23.29~25 238, 0.032~556.9, 0.7~422, 0.25~357.8, 5~584.7, 4.51~2 027.5 and 0.007~7.9 mg/kg. Taking the standard value of the first category of land in the Soil Environmental Quality Construction Land Soil Pollution Risk Management and Control Standard (Trial)(GB 36600—2018) as a reference, the maximum excess multiples of lead, cadmium, arsenic and nickel are 22.2, 28.8, 20.1 and 2.39 times, respectively. The distribution of heavy metals is mainly affected by atmospheric deposition, azimuth, wind direction, distance gradient, topography and geographical boundaries. The heavy metal pollution in the surface soil mainly comes from atmospheric deposition, and the unregulated waste residue storage will also cause heavy metal pollution in soil around the storage yard. |
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