许紫峻^1,2,
汪溪远¹,
师庆东^1,2,
袁婷婷^1,2,
王显¹,
祖拜代·木依不拉^1,2,
王伟^1,2
1. 新疆大学资源与环境科学学院, 智慧城市与环境建模自治区普通高校重点实验室, 乌鲁木齐 830046;
2. 新疆绿洲生态重点实验室, 乌鲁木齐 830046

作者简介: 许紫峻(1993-),男,硕士研究生,研究方向为环境演变和环境修复,E-mail:928608285@qq.com.

基金项目: 科技支疆项目(20139911105)；国家科技支撑计划项目(2014BAC15B01)


中图分类号: X171.5

Human Health Risk Assessment and Environmental Sensitivity Analysis of Soil Cadmium Pollution in Zhundong Mine Region of East Junggar Basin in Xinjiang, China

Xu Zijun^1,2,
Wang Xiyuan¹,
Shi Qingdong^1,2,
Yuan Tingting^1,2,
Wang Xian¹,
Zubaida·Muyibula^1,2,
Wang Wei^1,2
1. College of Resources and Environmental Science, General Institutes of Higher Learning Key Laboratory of Smart City and Environmental Modeling, Xinjiang University, Urumqi 830046, China;
2. Key Laboratory of Xinjiang Oasis Ecology, Xinjiang University, Urumqi 830046, China

CLC number: X171.5

-->

摘要
HTML全文
图(0)表(0)
参考文献(0)
相关文章
施引文献
资源附件(0)
访问统计

摘要:镉是一种毒性很强的重金属元素，易通过食物链进入人体，对人体健康产生影响。新疆地区的煤炭资源开发已引起重金属污染问题，但目前有关镉污染风险评价的研究相对不足。本研究采用地质累积指数法、潜在生态危害指数法、美国环保局(US EPA)健康风险评估方法和缓冲区分析方法，对准东红沙泉和北山煤矿土壤中镉的污染现状、生态风险水平和健康风险水平做了分析与评价。结果显示：1) 研究区土壤镉含量普遍超过国家土壤环境质量Ⅱ级标准，处于重污染水平；2) 研究区的镉污染具有极高生态风险；3) 镉污染水平和生态风险系数具有明显空间性，它们在研究区的强度排序为堆煤场>矿区生活区>芨芨湖>雀仁乡；4) 手-口途径是最主要的健康风险暴露途径，所有人群中儿童暴露风险最高；5) 准东煤矿区镉污染水平较高，但其非致癌水平和致癌水平均未超过风险限值；6) 矿区周边0~30 km区域内属于健康风险高敏感区域。综上可知：准东地区煤矿开采引起了周边环境镉污染。镉污染对人类健康，特别是儿童的健康具有较高的暴露风险。当地镉污染虽未达到致病水平，但也应引起足够重视。
关键词: 镉/
土壤/
健康风险评价/
准东煤矿区/
缓冲区分析

Abstract:Cadmium (Cd) is a highly toxic heavy metal element, which can affect human health through the amplification via food chain. The development of mineral resources produces a series of problems of heavy metal pollution in Zhundong Region of Xinjiang, China. However, the health risk assessment of Cd element remains unclear. In this study, the geo-accumulation index, the methods of potential ecological risk assessment, health risk assessment of USA EPA, and the spatial statistical analysis were used to investigate and evaluate the pollution situation, the ecological risk and human health risk of Cd in the Hongshaquan and Beishan coal mining areas of Zhundong Region of Xinjiang, China. The results showed that: 1) Cd contents in soil of Zhundong Region were higher than that of the second level of national heavy metal pollution standard. Zhundong Region has the high Cd pollution level. 2) Ecological risk (RI) and geoaccumulation index (I_geo)show that Cd pollution was extremely strong with high ecological risk in the study area. 3) Cd pollution level and ecological risk showed obvious spatial heterogeneity, with their contents sorted by the coal yard >residential quarters of mining area > Jijihu Village > Queren Town. 4) The intake by mouth and hand was the most common way of Cd exposure. Children have the highest risk of Cd exposure among people. 5) The results of human health risk assessment showed that Cd content was less than the carcinogenic limit values of Cd pollution in study region. 6) 0-30 km around the mining area was a high sensitive region of Cd against human health. In conclusion, the development of mineral resources produces Cd pollution in Zhundong Region of Xinjiang. Then this pollution already affected human health and imposed the highest risk of Cd exposure to children. Although Cd content was less than the carcinogenic limit values of Cd pollution, the local government departments should develop some strategies to control Cd pollution.
Key words:cadmium/
soil/
health risk assessment/
sensitivity analysis/
Zhundong coal mine region.