Guangdong Provincial Key Laboratory of Building Energy Efficiency and Application Technologies, School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China.
School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China.
Environ Geochem Health. 2023 Nov;45(11):8043-8061. doi: 10.1007/s10653-023-01703-8. Epub 2023 Aug 2.
The process of rapid urbanization in Northeast China has resulted in severe heavy metal pollution in the environment. In this study, we investigated the characteristics of heavy metal pollution in soil-corn straw and its combustion flue gas system, and the health risks of heavy metal pollution. The results showed that Cu and Zn in soil were more easily absorbed by corn straw roots. Heavy metals in soil, corn straw and flue gas from corn straw burning all pose some health risk to humans, and are more harmful to children than adults. The concentrations of heavy metals in both soil and flue gas from corn straw burning have reached extremely high ecological risk. The main sources of heavy metal elements in soils are, in order, industrial production, agricultural production activities and metallurgical production. This study highlights the key issues of heavy metal contamination in soil-corn straw and its combustion flue gas system, provides an auxiliary guide for the next step in analyzing the transfer mechanisms, and suggests a rational approach to mitigate heavy metal contamination.
中国东北地区快速的城市化进程导致环境中重金属污染严重。本研究调查了土壤-玉米秸秆及其燃烧烟道气系统中重金属污染的特征，以及重金属污染的健康风险。结果表明，Cu 和 Zn 等重金属更易被玉米秸秆根系吸收。土壤、玉米秸秆以及玉米秸秆燃烧产生的烟道气中的重金属都会对人类健康造成一定的风险，对儿童的危害大于成人。土壤和玉米秸秆燃烧产生的烟道气中重金属的浓度均达到极高的生态风险水平。土壤中重金属元素的主要来源依次为工业生产、农业生产活动和冶金生产。本研究强调了土壤-玉米秸秆及其燃烧烟道气系统中重金属污染的关键问题，为下一步分析重金属的迁移机制提供了辅助指导，并提出了合理的方法来减轻重金属污染。
