2016-2022年石家庄市农田土壤镉污染变化及潜在生态风险评价
Pollution change and health risk assessment of cadmium in farmland soil in Shijiazhuang from 2016 to 2022
武瑞婷 1陈凤格 2范尉尉 2张荣 3牛玉杰3
作者信息
- 1. 河北医科大学公共卫生学院,石家庄 050017;河北省环境与人群健康重点实验室,石家庄 050017;石家庄市疾病预防控制中心公共卫生监测与评价所,石家庄 050011
- 2. 石家庄市疾病预防控制中心公共卫生监测与评价所,石家庄 050011;中国疾病预防控制中心环境与健康研究基地,石家庄 050011
- 3. 河北医科大学公共卫生学院,石家庄 050017;河北省环境与人群健康重点实验室,石家庄 050017
- 折叠
摘要
目的 了解石家庄市2016-2022年农田土壤镉污染情况,评估对人群健康的潜在风险,评价《河北省农村人居环境整治"三年行动"实施方案(2018-2020年)》("三年行动")的实施对镉污染的改善效果.方法 选择石家庄6个项目县,每个县每年采集20份样本,并统一于每年7-8月在各县监测点处采样,采用标准限值对土壤中镉进行评价,同时采用地累积指数法和潜在生态风险指数法对其进行评估.结果 共采集农田土壤840份,其中在2016年和2017年镉含量均值较大,主要集中在正定县和赞皇县;在"三年行动"后石家庄市平均镉污染水平总体有所降低.其中正定县、赞皇县、栾城区、藁城区和鹿泉区在实施后镉含量降低,无极县在"三年行动"后镉含量上升.结论 石家庄市农田土壤中镉污染水平在"三年行动"后下降,表明该项目实施对降低土壤镉风险有一定效果,但仍需加强对土壤中镉污染的调查与监测,从而对潜在风险及时作出应对政策.
Abstract
Objective This study aims to clarify the situation of cadmium pollution in the agricultural soil of Shijiazhuang City from 2016-2022,evaluate potential health risks to the population,and assess the effectiveness of"the three-year initiative"in reducing cadmium pollution.Methods In six selected project counties,20 soil samples were collected annually from each county.Samples were collected from monitoring points in each county annually between July-August.Cadmium levels in the soil were evaluated using standard limits.Additionally,the study used the geo-accumulation index method,and potential ecological risk index method to assess the situation.Results A total of 840 soil samples were collected.In 2016 and 2017,cadmium levels were relatively high,primarily concentrated in Zhengding County and Zanhuang County.After"the three-year initiative",there was a decrease in the average cadmium pollution level in Shijiazhuang City.Specifically,and cadmium levels decreased in Zhengding County,Zanhuang County,Luancheng County,Gaocheng County,and Luquan County after implementation.However,Wuji County saw a slight increase in cadmium levels.Conclusions The level of cadmium pollution in agricultural soil in Shijiazhuang City significantly decreased after the implementa-tion of"the three-year initiative".This indicates that"the three-year initiative"had a certain effect in reducing soil cadmium risk.However,there is still a need to strengthen the investigation and monitoring of cadmium pollution in the soil to formulate timely policies to address potential risks.
关键词
农田土壤/镉/潜在生态风险Key words
Farmland soil/Cadmium/Potential ecological risks引用本文复制引用
基金项目
河北省自然科学基金(B2020106002)
出版年
2024
NETL
NSTL
万方数据