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for all metals examined represents the contamination degree (Cd) of the environment: Eri is the potential ecological risk index of an individual metal. It can be calculated by where Tri is the toxic response factor provided by H?KANSON[19] (Tri for Hg, Pb, Cd, Cr, As, Cu or Zn is 40, 5, 30, 2, 10, 5 or 1, respectively). Ri is the potential ecological risk index, which is the sum of Eri......
were engaging in a high potential ecological risk by pollution of Cd and should be given rise to concern. Key words: heavy metals; chemical speciation; geoaccumulation index; potential ecological risk...]. The impacts of the background of natural geological process and the human activities on the heavy metal pollution are considered [14]. Potential ecological risk index advanced by HAKANSON [15......
Trans. Nonferrous Met. Soc. China 22(2012) 1470-1477 Ecological risk assessment of heavy metals in sediments of Xiawan Port based on modified potential ecological risk index ZHU Hui-na1, 2, YUAN... Administration, Guangxi University of Finance and Economics,Nanning 530003, China Received 30 June 2011; accepted 28 October 2011 Abstract: Modified potential ecological risk index (MRI) was proposed......
mineralogical analysis, three-stage BCR sequential extraction procedure, dynamic leaching test and Hakanson Potential Ecological Risk Index Method were used to access the environmental activity... with environmental conditions. Potential ecological risk index method which was proposed by Swedish scientist HAKANSON in 1980 [14], had been widely applied to evaluate the harm of heavy metals in the sediments......
by Nemerow method, Hakanson’s ecological risk index method shows a low potential ecological risk due to Zn. The comprehensive studies indicate that the area of sampling is polluted by heavy metals...数 Table 5 Single and comprehensive factor of potential ecological risk index of heavy metals in soil 4 结论 (1) 利用内梅罗单因子污染指数法(Pi),综合污染指数法(P综)和Lars Hakanson提出的单因子潜在生态危害指数法(Ei),综合因子潜在生态危害指数法......
) by modifying an index, modified potential ecological risk index (MRI) [3]. Four different methods, named mineralogical analysis, three-stage BCR sequential extraction procedure, dynamic leaching test.... Ecological risk assessment of heavy metals in sediments of Xiawan port based on modified potential ecological risk index [J]. Transactions of Nonferrous Metals Society of China, 2012, 22(6): 1470-1477. [4......
J. Cent. South Univ. (2019) 26: 3252-3260 DOI: https://doi.org/10.1007/s11771-019-4250-0 Surface water quality and potential health risk assessments in Changsha-Zhuzhou-Xiangtan section... is not serious but As with potential risk to local people especially children should be concerned. In addition, Xiangtan city is mainly featured with heavy metal pollution, while Zhuzhou and Changsha city......
某城市不同功能区土壤中镉含量的分析与污染评价林喜燕1,刘玉祥2,胡恭任1(1.福建省泉州市华侨大学环境科学与工程系2.新疆师范大学 生命科学与化学学院,乌鲁木齐 830054)摘 要:采用潜在生态危害指数法评价乌鲁木齐市不同功能区土壤的镉污染状况.采集23个土壤样品,采用王水-HF-HC lO4体系消解,用火焰原子吸收分光光度法分析测定土壤中的镉含量.结果表明,不同功能区土壤中镉的含量为生活区>行政区>文教区,最大值为7.65mg/kg,最小值为0.35mg/kg,平均值为2.36mg/kg.乌鲁木......
contamination in the studied area ranged from moderately–heavily contaminated to heavily contaminated level. Potential ecological risk index (RI) analysis manifested that the whole ecological risk level... contaminated (Class 3); 3N ≤4, heavily contaminated (Class 4); 4N≤5, heavily to extremely contaminated (Class 5); and IN>5, extremely contaminated (Class 6). 3.3.4 Potential ecological risk index (RI......
of Environmental Contamination and Toxicology, 2009, 82(4): 405–409. [50] SURESH G, SUTHARSAN P, RAMASAMY V, VENKATACHALAPATHY R. Assessment of spatial distribution and potential ecological risk of the heavy metals... J. Cent. South Univ. (2018) 25: 1598-1611 DOI: https://doi.org/10.1007/s11771-018-3852-2 Trace elements spatial distribution characteristics, risk assessment and potential source identification......