Study on Speciation Analysis and Ecological Risk Assessment of Heavy Metals in Surface Sediments in Gansu, Ningxia and Inner Mongolia Sections of the Yellow River in Wet Season with HR-ICP-MS
MA Xiao-ling1, LIU Jing-jun1,3, ZUO Hang1,4, HUANG Fang1, LIU Ying1, 2*
1. College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China 2. Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing 100081, China 3. China National Cleaner Production Center of Ministry of Environmental Protection, Chinese Research Academy of Environmental Science, Beijing 100012, China 4. China National Environmental Monitoring Center, Beijing 100012, China
Abstract：In order to continuously study the contents, pollution condition and potential ecological risk of heavy metals in surface sediments in Gansu, Ningxia and Inner Mongolia sections of the Yellow River in wet seasons in different years, the speciation analysis of 9 kinds of heavy metals including Cd, Pb, Cr, Ni, Cu, V, Co, Zn and Mn, pollution condition and potential ecological risk of heavy metals in surface sediments from 10 sampling sites like Baotoufuqiao (S2), Shizuishantaolezhen (S6) and Wujinxia (S9) in Gansu, Ningxia and Inner Mongolia sections of the Yellow River in 2012 wet season were studied with BCR sequential extraction and high resolution inductively coupled plasma-mass spectrometry (HR-ICP-MS) based on our previous works. The results implied that the order of heavy metals average contents in the 10 sediment samples were the same: Mn＞V＞Zn＞Cr＞Cu＞Ni＞Pb＞Co＞Cd. In the sediments, heavy metals mainly existed in the form of residual fraction, which indicated that the bioavailability or environmental impact was low. Results of geo-accumulation indices (Igeo) showed that ICdgeo was the largest among the heavy metals with the strongest pollution, while IMngeo was the smallest. Enrichment factor (EF) indicated that only Cd and Cu were enriched at some sampling sites. In S5, because EFCd reached 4.69, Cd was affected by human activities obviously and the result was consistent with Igeo. Potential ecological risk index (RI) implied that the RI values in S1, S2 and S5 were between 150 and 300, which belonged to moderate polluting degree, while others were less than 150, belonging to light pollution degree. The results of this paper could not only provide reliable experimental data and theoretical basis for the relevant departments, but also supply the technical support for constructing mathematics model of sediments-pollutants transport, systematically researching the migration and transformation rule of persistent toxic substances and environmental assessment in these reaches.
Key words：Heavy metals;Speciation;Ecological risk assessment;Sediment;Yellow River
马小玲1，刘菁钧1,3, 左 航1, 4，黄 芳1，刘 颖1, 2* . HR-ICP-MS研究丰水期黄河甘宁蒙段表层沉积物中重金属的形态分析与污染评价 [J]. 光谱学与光谱分析, 2015, 35(04): 1062-1067.
MA Xiao-ling1, LIU Jing-jun1,3, ZUO Hang1,4, HUANG Fang1, LIU Ying1, 2* . Study on Speciation Analysis and Ecological Risk Assessment of Heavy Metals in Surface Sediments in Gansu, Ningxia and Inner Mongolia Sections of the Yellow River in Wet Season with HR-ICP-MS. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(04): 1062-1067.
[1] CAI Qiu, LONG Mei-li, ZHU Ming, et al. Environ. Pollut., 2009, 157(11): 3078. [2] LI Lian-fang, ZENG Xi-bai, LI Guo-xue, et al(李莲芳, 曾希柏, 李国学, 等). Acta Scientiae Circumstantiae(环境科学学报), 2007, 27(2): 289. [3] Bibi M H, Ahmed F, Ishiga H. Environ. Geol., 2007, 52(4): 625. [4] Amiard J C, Geard A, Amiard-Triquet C, et a1. Estuar. Coast. Shelf. S., 2007, 72(3): 511. [5] FENG Su-ping, LIU Shen-tan, DU Wei, et al(冯素萍, 刘慎坦, 杜 伟, 等). Journal of Instrumental Analysis(分析测试学报), 2009, 28(3): 297. [6] Field M P, La Vigne M, Murphy K R, et al. J. Anal. Atom. Spectrom., 2007, 22(9): 1145. [7] FAN Shuan-xi, GAN Zhuo-ting, LI Mei-juan, et al(范拴喜, 甘卓亭, 李美娟, 等). Chinese Agricultural Science Bulletin(中国农学通报), 2010, 26(17): 310. [8] GENG Ya-ni(耿雅妮). Chinese Agricultural Science Bulletin(中国农学通报), 2012, 28(11): 262. [9] Rubio B, Nombela M A, Vilas F. Mar. Pollut. Bull., 2000, 40(11): 968. [10] Teasdale P R, Apte S C, Ford P W, et al. Estuar. Coast. Shelf. S., 2003, 57(3): 475.
