芜湖钢铁厂周边土壤及油菜籽中镉、铜、锌、铅含量和形态分布研究

摘要/Abstract

摘要： 研究了污染土壤、油菜籽中Cd、Cu、Zn、Pb含量、形态分布特征和重金属富集状况及可能存在的生物毒性.结果表明,土壤中Cd、Zn、Pb以铁锰氧化物结合态、Cu以残留态占5种形态最高比例,分别为31.1%、39.3%、53.79%、46.24%;Cd、Pb交换态比例较高,为23.47%、16.32%,Cu、Zn的交换态比例较小,为3.14%、0.54%;土壤中不同重金属与各重金属形态相关关系有差别,5种重金属形态转化为有效态重金属难易程度不同;油菜籽和油菜籽壳中不同重金属累积趋势有差异,Cu易在油菜籽壳中累积,Cd、Zn、Pb易在油菜籽中累积;油菜籽中不同重金属累积率不同,Cd累积率最高,为0.56.油菜籽中重金属累积率与土壤中重金属总量呈显著负相关关系(P＜0.05),土壤中重金属的形态、转化差异是此种负相关关系的主要原因;油菜籽中Cd、Cu、Pb以氯化钠态为主,分别为32.50%、22.94%、34.69%,Zn以EDTA态为主,为45.97%.油菜籽中重金属形态可能影响其毒性,但其毒性的人类膳食风险还需进一步研究证实.油菜籽中重金属形态与油菜中重金属总量相关性不好.

关键词: 形态, 油菜籽, 毒性

Abstract: The study showed that around Wuhu Plant,soil Cd,Zn and Pb mainly existed in Fe-Mn oxide form,and Cu in residual form,with the percentage of 31.81%,39.83%,53.79%,and 46.24%,respectively.Soil exchangeable Cd and Pb had a higher proportion (23.47% and 16.32%) than soil exchangeable Cu and Zn (3.14% and 0.54%).The correlations between soil heavy metals and their forms,as well as their transformation to available form were different.Different heavy metals had different accumulation trends in rapeseed and its hull.Cu easily accumulated in hull,while Cd,Zn and Pb had a higher accumulation in seed.The accumulation rate of heavy metals in rapeseed and hull was also different,being the highest for Cd.There was a significantly negative correlation (P<0.05) between the accumulation rate of heavy metals and their contents in soil.In rapeseed,Cd,Cu and Pb were mainly in sodium hydroxide form,with the percentage of 32.50%,22.94% and 34.69%,respectively,while Zn was mainly in EDTA form,with a percentage of 45.97.The existed forms of heavy metals in rapeseed probably affected their toxicity,but the toxicity to human food could not be inferred from this research,and needed to be studied further.There was a weak relation between heavy metals contents and their existed forms in rapeseed.

Key words: Form, Rapeseed, Toxicity

中图分类号:

X132

王兴明, 刘登义, 涂俊芳, 李征, 王友保. 芜湖钢铁厂周边土壤及油菜籽中镉、铜、锌、铅含量和形态分布研究[J]. 应用生态学报, 2005, 16(10): 1924-1931.

WANG Xingming, LIU Dengyi, TU Junfang, LI Zheng, WANG Youbao . Cd,Cu,Zn and Pb contents and forms in soils and rapeseeds around Wuhu Plant[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1924-1931.

参考文献

[1] Dudka S, Kabata A. 1990. Effects of solid-phase speciation on metal mobility and phyto-availability in sludge amended soil. Water Air Soil Poll, 51:153～161
[2] Dudka S, Miller WP. 1999. Accumulation of potentially toxic elements to plants and their transfer to human food chain. J Environ Sci Health, B34(4):681～708
[3] Korcak RF, Fanning DS. 1978. Extractability of cadmium, copper,nickel and zinc by double acids vs DTPA and plant content at excessive soil level. J Environ Qual, 5 (7): 506～512
[4] Hambidge KM, Casey CE, Krebs NF. 1986. Zinc. In:Mertz W, ed.Trace Elements in Human and Animals Nutrition. 5th Edition. New York:Academic Press Inc. 1137
[5] He J-Q(贺建群), Xu J-l(许嘉琳), Yang J-R(杨居荣), et al.1994. Study of the extractants for available Cd, Cu, Zn and Pb in soils. Agro-Environ Prot (农业环境保护), 13(6):246～251 (in Chinese)
[6] He M-C(何孟常), Yang J-R(杨居荣). 2001. The protein-binding forms of Cd and Pb in polluted rice seed and their stability. Acta Environ Sci (环境科学学报), 21 (2) :213～217(in Chinese)
[7] Institute of Soil Science, Chinese Academy of Sciences(中国科学院南京土壤研究所). 1978. The Physical and Chemical Analysis Methods of Soil. Shanghai: Shanghai Science & Technology Press.112～350 (in Chinese)
[8] Kong Q-X(孔庆新). 1994. The distribution of a few heavy metals'chemical forms in soil body. Environ Prot Agric(农业环境保护),13(4): 152～157(in Chinese)
[9] Liu X(刘霞), Liu S-Q(刘树庆), Tang Z-H (唐兆宏). 2002.The relationship between Cd and Pb forms and their availability to rape in major soils of Hebei Province. Acta Ecol Sin (生态学报),22(10) :1688～1694(in Chinese)
[10] Liao Z-J (廖自基). 1992. The Environment Chemical and Biological Effect of Microelement. Beijing: China Environmental Science Press. 231～237 (in Chinese)
[11] Peijnenburg W, Baerselman K, de Groot A, et al. 2001. Quantification of metal bioavailability for lettuce(Lactuca sative L.) in field soils. Environ Cont Toxic, 39:420～430
[12] Pan G-X(潘根兴), Chang AC, Page AL. 2002. Modeling transfer and partitioning of potentially toxic pollutants in soil-crop system for human food security. Chin J Appl Ecol (应用生态学报), 13(7): 854～858(in Chinese)
[13] Ramos L, Hernandez LM, Gonzalez MJ. 1994. Sequential fractionation of copper, cadmium and zinc in soil from or near Donana Nation Park. J Environ Qual, 23:50～57
[14] Swartjes FA. 1999. Risk-based assessment of soil and groundwater quality in the netherlands: Stands and remediation urgency. Risk Anal, 19(6): 1235～1249
[15] ShanGJH(山根靖弘),Gao W(高伍),Nei SC(内山充).1981.The Contamination and Toxicity in the Environment. Chengdu:Sichuan People's Press. 28～37(in Chinese)
[16] Tu C(涂从). 1997. The study of biological availability of Ni forms in soils. Acta Sci Circ (环境科学学报), 17(2): 179～185(in Chinese)
[17] Williams DE. 1980. Trace element accumulation, movement and distribution in the soil profile from massive application of sewage sludge. Soil Sci, 129(2): 112～114
[18] Wang J-F(汪金舫),Zhu Q-Q(朱其清),Liu Z(刘铮).2000.A primary study on chemical bound forms of copper and zinc in wheat and rape. Chin J Appl Ecol (应用生态学报), 11(4) :629～630(in Chinese)
[19] Wang PX, Qu EF, Li ZB. 1997. Fractions and availability of nickel in Loessial soil amended with sewage sludge or sewage. J Environ Qual, 26:795～800
[20] Wu J-Y(吴家燕),Xia Z-L(夏增禄),Ba Q(巴青), et al. 1991.The effect of Cd, Cu, Pb, As in purple soil to the enzyme existed in the root of crop. Rural Eco-Environ (农村生态环境), 10 (6):244～247 (in Chinese)
[21] Wang X(王新), Zhou Q-X (周启星). 2003. Distribution of forms for cadmium, lead, copper and znic in soil and its influence by modifier. J Agro-Environ Sci(农业环境科学学报), 22(5) :541～545(in Chinese)
[22] Xu J-L(许嘉琳),Bao Z-P(鲍子平), Yang J-R(杨居荣), et al.1991. Chemical forms of Pb, Cd and Cu in crops. Chin J Appl Ecol (应用生态学报), 2(3) :244～248(in Chinese)
[23] Xu X-Y(徐晓燕), Yang X-E(杨肖娥),Yang Y-A(杨玉爱).1996. Transfer of zinc from soils to food chain. Guangdong Trace Elements Sci (广东微量元素科学), 3 (7): 21～29 (in Chinese)
[24] Xu Z(徐卓). 1993. The effect of Cd and Cu in soil to the growth of paddy. Rural Eco-Environ (农村生态环境), (3): 48～50 (in Chinese)
[25] YangJ-R(杨居荣),ZhaY(查燕),LiuH(刘虹).1999.The distribution and chemical forms of Cd, Cu and Pb in polluted seeds.China Environ Sci (中国环境科学), 19 (6): 500～504 (in Chinese)
[26] Yang J-R(杨居荣), Zha Y(查燕), Liu H(刘虹), et al.2001.Distribution, binding forms of Cu in polluted seeds of crops and its toxicity. Agro-Environ Prot (农业环境保护), 20(4): 199～201 (in Chinese)
[27] Yng J-R(杨居荣), Zha Y(查燕). 1999. Existing forms of heavy metals and their toxicity in foods. Chin J Appl Ecol (应用生态学报), 10(6): 766～770 (in Chinese)
[28] Yan W-J(阎伍玖). 1999. Heavy metal pollution in the soil in the suburbs of Wuhu city, Anhui Province. Acta Sci Circ(环境科学学报), 19(3) :339～341 (in Chinese)
[29] Zhu B(朱波),Qing C-L(清长乐),Mou S-S(牟树森).2002.Bioavailability of exotic zinc and cadmium in purple soil. Chin J Appl Ecol (应用生态学报), 13(5) :555～558(in Chinese)
[30] Zhou L-K(周礼恺),Zhang Z-M(张志明),Cao C-J(曹承锦), et al. 1985. Heavy metal pollution in soils and soil enzymic activities. Acta Sci Circ (环境科学学报), 5(2): 176～184(in Chinese)
[31] Zhu Y-W(朱燕婉), Shen W-S(沈王水), Qian Q-W(钱钦文).1989. Successive extraction method of five fractions of heavy metals in soils. Soils(土壤), 21(3): 163～166(in Chinese)