ZHANG Qian, CHEN Zong-juan, PENG Chang-sheng, LI Fa-sheng, GU Qing-bao. Heavy Metals Pollution in Topsoil from Dagang Industry Area and Its Ecological Risk Assessment[J]. Environmental Science, 2015, 36(11): 4232-4240.
Heavy Metals Pollution in Topsoil from Dagang Industry Area and Its Ecological Risk Assessment
ZHANG Qian1, CHEN Zong-juan1,2, PENG Chang-sheng3, LI Fa-sheng1, GU Qing-bao1
1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 2. College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; 3. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, China
Abstract: Based on previous studies and field investigation of Dagang industry area in Tianjin,a total of 128 topsoil samples were collected, and contents of 10 heavy metals (As, Cd, Cr, Co, Cu, Pb, Ni, V, Zn and Hg) were determined. The geoaccumulation index and geostatistics were applied to examine the degree of contamination and spatial distribution of heavy metals in topsoil. The assessment on ecological risk of heavy metals was carried out using Hakanson's method, and the main resources of the heavy metals were analyzed as well. It was found that As, Cd and Co had the highest proportions exceeding Tianjin background value, which were 100%, 97.66% and 96.88%, respectively; the heavy-metal content increased to some extent comparing with that in 2004, and the pollutions of As and Cd were the worst, and other metals were at moderate pollution level or below. The ecological risks of heavy metals were different in topsoil with different land use types, the farmland soil in the southwest as well as soils adjacent to the industrial land were at relatively high potential ecological risk level, and the integrated ecological risk index reached up to 1437.37. Analysis of correlation and principal component showed that traffic and transportation as well as agricultural activities might be the main resources of heavy metals in the area, besides, the industrial activities in the region might also affect the accumulation of heavy metals.
Key words:
industry areaheavy metalsecological risk assessmentsoilgeoaccumulation index
Park B Y, Lee J K, Ro H M, et al. Effects of heavy metal contamination from an abandoned mine on nematode community structure as an indicator of soil ecosystem health[J]. Applied Soil Ecology, 2011, 51 : 17-24.
[3]
Yuan G L, Sun T H, Han P, et al. Source identification and ecological risk assessment of heavy metals in topsoil using environmental geochemical mapping: Typical urban renewal area in Beijing, China[J]. Journal of Geochemical Exploration, 2014, 136 : 40-47.
Dragovi DćR, Gaji DćB, Dragovi DćS, et al. Assessment of the impact of geographical factors on the spatial distribution of heavy metals in soils around the steel production facility in Smederevo (Serbia)[J]. Journal of Cleaner Production, 2014, 84 : 550-562.
Guo W H, Liu X B, Liu Z G, et al. Pollution and potential ecological risk evaluation of heavy metals in the sediments around Dongjiang Harbor, Tianjin[J]. Procedia Environmental Sciences, 2010, 2 : 729-736.
[14]
US EPA. Selected Analytical Methods for Environmental Remediation and Recovery (SAM)[R]. Cincinnati: Office of Research and Development, 2012. 54-108.
[15]
Müller G. Index of geoaccumulation in sediments of the Rhine River[J]. Geo Journal, 1969, 2 (3): 108-118.
Martín J A R, Arias M L, Corbí J M G. Heavy metals contents in agricultural topsoils in the Ebro basin (Spain). Application of the multivariate geoestatistical methods to study spatial variations[J]. Environmental Pollution, 2006, 144 (3): 1001-1012.
[28]
Jiao W T, Chen W P, Chang A C, et al. Environmental risks of trace elements associated with long-term phosphate fertilizers applications: A review[J]. Environmental Pollution, 2012, 168 : 44-53.
Chen T B, Zheng Y M, Lei M, et al. Assessment of heavy metal pollution in surface soils of urban parks in Beijing, China[J]. Chemosphere, 2005, 60 (4): 542-551.
[38]
Karim Z, Qureshi B A, Mumtaz M, et al. Heavy metal content in urban soils as an indicator of anthropogenic and natural influences on landscape of Karachi—A multivariate spatio-temporal analysis[J]. Ecological indicators, 2014, 42 : 20-31.
Gowd S S, Reddy M R, Govil P K. Assessment of heavy metal contamination in soils at Jajmau (Kanpur) and Unnao industrial areas of the Ganga Plain, Uttar Pradesh, India[J]. Journal of Hazardous Materials, 2010, 174 (1-3): 113-121.
Madrid L, Díaz-barrientos E, Madrid F. Distribution of heavy metal contents of urban soils in parks of Seville[J]. Chemosphere, 2002, 49 (10): 1301-1308.