污灌条件下重金属在耕作土壤中的积累与形态分布特征——以北京市通州区凤港减河污灌区农用地为例

doi:10.13249/j.cnki.sgs.2013.08.1014

地理科学 ›› 2013, Vol. 33 ›› Issue (8): 1014-1021.doi: 10.13249/j.cnki.sgs.2013.08.1014

污灌条件下重金属在耕作土壤中的积累与形态分布特征——以北京市通州区凤港减河污灌区农用地为例

陈志凡¹(), 赵烨², 郭廷忠¹, 王水锋², 田青³

1. 河南大学资源与环境研究所环境与规划学院, 河南开封 475004
2. 北京师范大学环境学院水环境模拟国家重点实验室, 北京100875
3. 中国疾病预防控制中心辐射防护与安全医学所,北京 100088

收稿日期:2012-09-05 修回日期:2012-12-19 出版日期:2013-08-20 发布日期:2013-08-20
作者简介:
作者简介：陈志凡（1979-）,女,河南沁阳人,副教授,博士,主要从事水土污染诊断与防治研究。E-mail: pingfan0604@yahoo.cn
基金资助:
国土资源部公益性科研项目（201011006-1）、国家重点基础研究发展计划（973）项目（2007CB407302）、河南省教育厅科学技术研究重点项目（13A610064）资助

Impacts of Sewage Irrigation on Heavy Metal Distribution and Chemical Fractions in Arable Soils: A Case Study About Sewage-irrigated Farmlands of the Fenggangjian River in Tongzhou District of Beijing, China

Zhi-fan CHEN¹(), Ye ZHAO², Ting-zhong GUO¹, Shui-feng WANG², Qing TIAN³

1.Institute of Natural Resources and Environment, College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
2. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
3.National Institute for Radiological Protection, Chinese Center for Disease Control and Protection, Beijing 100088, China

Received:2012-09-05 Revised:2012-12-19 Online:2013-08-20 Published:2013-08-20

摘要/Abstract

摘要：

以北京市通州区凤港减河典型污灌农用地为研究对象,分析了污灌对耕作土壤中Cd、Cu、Zn和Pb的全量与形态分布特征的影响。结果表明：① 土壤中Cu、Zn和Pb的含量均低于WHO(World Health Organization)限值,Cd的含量明显高于WHO限值。然而,4种重金属的污染负载指数（PLI为1.49~4.54）均高于1,其中Cd的PLI值最高,表明长期污灌已经导致耕作土壤中重金属的积累;② 总体来看,随土壤深度的增加,重金属含量呈先减少,后增加的趋势。距离灌渠越远,土壤中重金属含量越少;③ 土壤中Cu、Zn和Pb主要以残余态和有机结合态形式存在,其次是铁锰氧化态,碳酸盐结合态和离子交换态非常少。而土壤中Cd的碳酸盐结合态与离子交换态占有相当大的比例。4种重金属的生物可利用性次序为：Cd>Cu>Pb>Zn,且表土层高于底土层。同时,研究发现距离灌渠越近,表土层中Cd的生物可利用性越低。总的说来,污灌土壤中较高的Cd含量与其较高的生物可利用性对食品安全与人类健康构成了潜在风险。

关键词: 污灌, 重金属分布, 化学形态, 耕作土壤, 生物可利用性

Abstract:

In this study, distribution and chemical fractions of Cd, Cu, Zn and Pb in sewage-irrigated arable soils located in the sewage-irrigated farmlands of the Fenggangjian River in Tongzhou District of Beijing were investigated. The results showed that: 1) Cu, Zn and Pb concentrations in soils were below WHO limits, while Cd was obviously above the limit. However, due to long-term sewage irrigation, studied soil exhibited metals accumulation with their pollution load indices (1.49-4.54) above one, especially Cd with the highest PLI. 2) On the whole, with soil depth rising, total contents of four metals presented firstly decreasing, then increasing trends. For metal fractions, Cu, Zn and Pb were predominantly associated with residual and organic fraction, followed by Fe/Mn oxide, and very small proportion of carbonate and exchangeable fraction, whereas, the carbonate and exchangeable fractions of Cd accounted for considerable proportion. Their mobility and bioavailability followed the sequence: Cd>Cu>Pb>Zn. Besides, in topsoils, their bioavailability was higher than that of subsoils. 3) Generally, the contents of heavy metals in soils showed a decreasing trend with the increment of the distance from the irrigation channel. Also, it was observed that the arable soils closer to the irrigation channel showed the lower Cd bioavailability in topsoils. Therefore, higher Cd contents and its higher bioavailability in sewage-irrigated soils might constitute potential risk on food security and human health.

Key words: sewage irrigation, heavy metals distribution, chemical speciation, arable soil, bioavailability

中图分类号:

X825

陈志凡, 赵烨, 郭廷忠, 王水锋, 田青. 污灌条件下重金属在耕作土壤中的积累与形态分布特征——以北京市通州区凤港减河污灌区农用地为例[J]. 地理科学, 2013, 33(8): 1014-1021.

Zhi-fan CHEN, Ye ZHAO, Ting-zhong GUO, Shui-feng WANG, Qing TIAN. Impacts of Sewage Irrigation on Heavy Metal Distribution and Chemical Fractions in Arable Soils: A Case Study About Sewage-irrigated Farmlands of the Fenggangjian River in Tongzhou District of Beijing, China[J]. SCIENTIA GEOGRAPHICA SINICA, 2013, 33(8): 1014-1021.

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参考文献 24

[1]	Maldonado V M,Arias H O R,Quintana R,et al.Heavy metal content in soils under different wastewater irrigation patterns in Chihuahua,Mexico[J].International Journal of Environmental Research and Public Health,2008,5(5):441-449.
[2]	Zhang Y L,Dai J L,Wang R Q,et al.Effects of long-term sewage irrigation on agricultural soil microbial structural and functional characterizations in Shandong,China[J].European Journal of Soil Biology,2008,44(1):84-91.
[3]	Nan Z,Zhao C,Li J,et al.Relations between soil properties and selected heavy metal concentrations in springwheat (Triticum Aestivum L.) grown in contaminated soils[J].Water,Air,and Soil Pollution,2002(133):205-213.
[4]	Huang M L,Zhou S L,Sun B,et al.Heavy metals in wheat grain: Assessment of potential health risk for inhabitants in Kunshan, China[J].Science of the Total Environment,2008,405(1-3):54-61.
[5]	Fu Q, Hu H, Li J,et al.Effects of soil polluted by cadmium and lead on production and quality of pepper (Capsicum annuum L.) and radish (Raphanus sativus L.)[J].Journal of Food,Agriculture & Environment, 2009,7(2): 698-702.
[6]	Salvatore M D,Carratù G,Carafa A M.Assessment of heavy metals transfer from a moderately polluted soil into the edible parts of vegetables[J].Journal of Food,Agriculture & Environment, 2009,7(2):683-688.
[7]	Gupta N, Khan D K,Santra S C.An assessment of heavy metal contamination in vegetables grown in wastewater-irrigated areas of Titagarh,West Bengal,India[J].Bulletin of Environmental Contamination and Toxicology,2008,80(2):115-118.
[8]	Khan S, Cao Q, Zheng Y M,et al.Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China[J].Environmental Pollution,2008,152(3):686-692.
[9]	Ma L Q,Rao G N.Chemical fractionation of cadmium, copper, nickel, and zinc in contaminated soils[J].Journal of Environmental Quality,1997,26(1):259-264.
[10]	陈志凡,赵烨,谷蕾,等.基于农业区位论的北京市土壤-小麦系统中重金属Pb积累特征及其健康风险[J].地理科学,2012,32(9):1142~1147.
[11]	陈俊,范文宏,孙如梦,等.新河污灌区土壤中重金属的形态分布和生物有效性研究[J].环境科学学报,2007,27(5):831~837.
[12]	Liu W H,Zhao J Z,Ouyang Z Y,et al.Impacts of sewage irrigation on heavy metal distribution and contamination in Beijing, China[J].Environment International,2005,31(6):805-812.
[13]	潘术香. 北京市地表水环境质量评价[D].北京:中国农业大学,2004:32,63.
[14]	鲁如坤. 土壤农业化学分析方法[M].北京:中国农业科技出版社,1999.
[15]	Lu Y,Gong Z T,Zhang G L,et al.Concentrations and chemical speciations of Cu, Zn, Pb and Cr of urban soils in Nanjing, China[J].Geoderma,2003,115(1-2):101-111.
[16]	Tessier A,Campbell P G C,Blsson M. Sequential extration procedure for the speciation of particulate trace metals[J].Analytical Chemistry,1979,51(7):844-851.
[17]	北京市主要农业土壤和粮食作物中元素背景值研究协作组.北京主要农业土壤和粮食作物中若干元素的背景值研究[J].环境科学学报,1985,5(1):114~120.
[18]	Rodriguez L, Ruiz E, Alonso-Azcarate J, et al.Heavy metal distribution and chemical speciation in tailings and soils around a Pb-Zn mine in Spain[J].Journal of Environmental Management,2009,90(2):1106-1116.
[19]	Tembo B D, Sichilongo K,Cernak J.Distribution of copper, lead, cadmium and zinc concentrations in soils around Kabwe town in Zambia[J].Chemosphere,2006,63(3):497-501.
[20]	Kabata-Pendias A,Mukherjee A B.Trace elements from soil to human[M].Berlin Heidelberg:Springer,2007.
[21]	Chen Z F,Zhao Y,Li Q,et al.Heavy metal contents and chemical speciations in sewage-irrigated soils from the eastern suburb of Beijing,China[J]. Journal of Food, Agriculture & Environment,2009,7(3&4): 690-695.
[22]	朱桂芬,张春燕,王学锋,等.新乡市自来水自备水源地土壤中重金属的形态研究[J].土壤通报, 2008,39(1):125~128.
[23]	弓成,王海燕,黄丽岩.北京市土壤重金属形态分析[J].城市环境与城市生态,2006,19(5):38~40.
[24]	许嘉琳,杨居荣.陆地生态系统中的重金属[M].北京:中国环境科学出版社,1995:449.

土壤深度 (cm)		Cd(mg/kg)	Cu(mg/kg)	Zn(mg/kg)	Pb(mg/kg)
	0~20	0.59±0.08	24.97±3.68	63.02±9.02	21.07±2.63
	20~40	0.57±0.10	24.66±4.83	58.73±10.63	19.99±3.46
WHO限值		0.35	30	90	30
北京土壤背景值		0.13	10.07	42.34	13.00
上海土壤背景值		0.13	23.50	76.80	21.30
南京土壤背景值		0.19	32.20	76.80	24.80
世界平均		0.50	15-40	50-100	15-25
PLI		4.54	2.48	1.49	1.62

污灌条件下重金属在耕作土壤中的积累与形态分布特征——以北京市通州区凤港减河污灌区农用地为例

Impacts of Sewage Irrigation on Heavy Metal Distribution and Chemical Fractions in Arable Soils: A Case Study About Sewage-irrigated Farmlands of the Fenggangjian River in Tongzhou District of Beijing, China

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