Pollution evaluation of heavy metals in soil near smelting area by index of geoaccumulation (Igeo)

• Published in: IOP conference series. Earth and environmental science 2017-01, Vol.52 (1), p.12095
• Main Authors: Huang, S H, Yang, Y, Yuan, C Y, Li, Q, Ouyang, K, Wang, B, Wang, Z X
• Format: Article
• Language: English
• Subjects: Atomic absorption analysis; Atomic absorption spectroscopy; Cadmium; Contamination; Copper; Evaluation; Fluorescence; Geology; Heavy metals; Lead; Metal concentrations; Metallurgy; Metals; Pollution levels; Scientific imaging; Sediment pollution; Smelting; Soil classification; Soil conditions; Soil contamination; Soil investigations; Soil pollution; Soils; Spectral analysis; Spectrometry; Spectroscopy; Zinc
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1742-6596/52/1/012095

In order to investigate the heavy metal pollution conditions of soil of smelting area in Zijiang of Chenzhou, Hunan province, 42 samples were studied. The concentrations of heavy metals As, Pb, Cd, Zn and Cu in the soil were determined by using atomic absorption spectrometry(AAS) and atomic fluorescence spectrometry(AFS). Then the potential pollution risks of heavy metal in the soil were evaluated by method of geological acumination index (Igeo). The results indicated that the average concentrations of As, Pb, Cd, Zn and Cu were 187.79, 2074.52, 15.72, 2178.89, 39.69 mg/kg respectively. The geological evaluation of the cumulative index results showed that the contamination degree of 5 heavy metals follow the sequence of Cd> Zn >Pb > As >Cu. The results show that Cd reached extremely pollution degree, Zn reached strong pollution-extremely pollution levels, the pollution of Pb in the soil is classified as strong pollution degree, Cu and As of no pollution according to the results of Igeo based on the background value of heavy metals in the soil of Hunan Province.