Yang Qiao, Hongling Yin, Shuyu Lin, Xiaoke Guo, Hui Zhang, Geng Ge, Yuxiang Lu
{"title":"Pollution Characteristics and Risk Assessment of Heavy Metals in Dujiangyan Irrigation District, China","authors":"Yang Qiao, Hongling Yin, Shuyu Lin, Xiaoke Guo, Hui Zhang, Geng Ge, Yuxiang Lu","doi":"10.1007/s41742-024-00644-z","DOIUrl":null,"url":null,"abstract":"<p>Dujiangyan Irrigation District is the largest irrigation district in China. To understand heavy metal pollution and its potential hazards, the contents and distribution of typical heavy metals in rivers, soils and plant samples from 19 sites were studied and their ecological risks and health risks were evaluated. The results showed that the concentrations of nine heavy metals in the river water did not exceed the safe values (GB 3838-2002). They showed a trend of the highest in the middle reaches followed by the upstream and downstream areas, and the concentration in the dry season (winter) was higher than that in the wet season (summer). The average values of heavy metals in the soil were 0.3–3.08 times the background values in Chengdu. The highest average enrichment factor was Cd (7.52). The Nemerow pollution index indicated that the quality of the river water was at a clean level. However, the heavy metals in the soil at sites B1 and B3 were at a heavy pollution level. The potential ecological hazard index also showed that Cd in the soils of the study area at sites B1 and B3 was very highly hazardous and 26% of the sample area was at a highly hazardous level. The cumulative carcinogenic health risks due to total heavy metals exceeded the safety limits for both children and adults. Furthermore, the risks were higher in children than in adults. This study provides theoretical support for dealing with heavy metal pollution in the irrigation district.</p>","PeriodicalId":14121,"journal":{"name":"International Journal of Environmental Research","volume":"74 1","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environmental Research","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s41742-024-00644-z","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Dujiangyan Irrigation District is the largest irrigation district in China. To understand heavy metal pollution and its potential hazards, the contents and distribution of typical heavy metals in rivers, soils and plant samples from 19 sites were studied and their ecological risks and health risks were evaluated. The results showed that the concentrations of nine heavy metals in the river water did not exceed the safe values (GB 3838-2002). They showed a trend of the highest in the middle reaches followed by the upstream and downstream areas, and the concentration in the dry season (winter) was higher than that in the wet season (summer). The average values of heavy metals in the soil were 0.3–3.08 times the background values in Chengdu. The highest average enrichment factor was Cd (7.52). The Nemerow pollution index indicated that the quality of the river water was at a clean level. However, the heavy metals in the soil at sites B1 and B3 were at a heavy pollution level. The potential ecological hazard index also showed that Cd in the soils of the study area at sites B1 and B3 was very highly hazardous and 26% of the sample area was at a highly hazardous level. The cumulative carcinogenic health risks due to total heavy metals exceeded the safety limits for both children and adults. Furthermore, the risks were higher in children than in adults. This study provides theoretical support for dealing with heavy metal pollution in the irrigation district.
期刊介绍:
International Journal of Environmental Research is a multidisciplinary journal concerned with all aspects of environment. In pursuit of these, environmentalist disciplines are invited to contribute their knowledge and experience. International Journal of Environmental Research publishes original research papers, research notes and reviews across the broad field of environment. These include but are not limited to environmental science, environmental engineering, environmental management and planning and environmental design, urban and regional landscape design and natural disaster management. Thus high quality research papers or reviews dealing with any aspect of environment are welcomed. Papers may be theoretical, interpretative or experimental.