多米尼加共和国桑切斯-拉米雷斯省农业区土壤重金属污染及生态风险评估

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Natividad Miledy Alberto Then, Ramón Delanoy, Pedro Antonio Nuñez-Ramos, Oscar Díaz Rizo, Lizaira Bello
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引用次数: 0

摘要

农业土壤中的重金属污染是全球农业生产中的主要问题之一,威胁着人类健康和环境。为了评估多米尼加共和国桑切斯-拉米雷斯省农业区的重金属污染水平和生态风险,使用能量色散 X 射线荧光光谱法(EDXRF)测量了重金属(铁、锰、铬、镍、铜、锌、铅和砷)的浓度水平。采用了多种污染指数(包括地理累积指数(Igeo)、富集因子(EF)和单一污染指数(PI))来研究污染状况。此外,还测定了研究土壤中不同重金属的空间分布。铁、锰、铬、镍、铜、锌、铅和砷的平均浓度分别为 73735、1616、426、34、20、200、43 和 5 毫克/千克。这些结果表明,铬、铜、锌和铅的平均浓度超过了联合国粮农组织对健康农业土壤的建议水平。不过,潜在生态风险评估显示其处于低风险状态。这些结果有助于改进土壤-水稻-环境管理方法,防止此类生产系统中的重金属污染,保护当地居民的健康和环境。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Soil Heavy Metal Pollution and the Ecological Risk in an Agricultural Area from Sánchez Ramírez Province, Dominican Republic
Heavy metal pollution in agricultural soils is one of the main problems in agricultural production worldwide, which threatens human health and the environment. To evaluate the pollution levels of heavy metals and the ecological risks in an agricultural area from Sánchez Ramírez Province, Dominican Republic, the concentration levels of heavy metals (Fe, Mn, Cr, Ni, Cu, Zn, Pb, and As) were measured using energy-dispersive X-ray fluorescence spectroscopy (EDXRF). Several pollution indices, including the geo-accumulation index (Igeo), enrichment factor (EF), and single pollution index (PI), were used to investigate the pollution status. The spatial distribution of different heavy metals in the studied soils was also determined. The mean concentrations of Fe, Mn, Cr, Ni, Cu, Zn, Pb, and As were 73735, 1616, 426; 34; 20; 200; 43; and 5 mg kg−1, respectively. These results indicated that the mean concentration of Cr, Cu, Zn, and Pb exceeded FAO-recommended levels for healthy agricultural soils. However, the potential ecological risks assessment indicated a low-risk status. The results obtained could help improve soil–rice–environment management practices and prevent heavy metal pollution in this type of production system, protecting the health of the local population and the environment.
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
期刊介绍: ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/​Abstracted: Web of Science SCIE Scopus CAS INSPEC Portico
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