江西省典型水稻土对铅的吸附解吸特性研究和环境风险评估
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摘要
【目的】研究江西省典型水稻土对铅的吸附解吸特性.【方法】以江西省2种典型水稻土(潜育型、潴育型)为试材,采用振荡平衡法研究铅在水稻土中的吸附-解吸特性,并利用保留因子对铅在水稻土中的环境风险进行评估.【结果】潴育型水稻土的吸附能力较强,明显大于潜育型水稻土,但潴育型水稻土的解吸能力小于潜育型水稻土,各初始浓度下,潜育型水稻土的解吸率为4.88%~28.81%,而潴育型水稻土解吸率为4.90%~20.56%;2种水稻土对铅的吸附用Freundlich方程拟合效果相对较好;铅的环境风险随铅含量的升高先减小后增大,且潜育型水稻土大于潴育型水稻土.【结论】研究表明与潴育型水稻土相比,潜育型水稻土更容易受铅的污染.
【Objective】In order to investigate the adsorption and desorption characteristics of lead in typical paddy soils of Jiangxi Province.【Method】Gleyed paddy soil and waterloggogenic paddy soil were collected from Jiangxi Province and the batch equilibrium method was employed to investigate the adsorption and desorption behaviors of lead,and the environmental risk of presence of lead in these soils were assessed with retention factors.【Result】The adsorption ability of waterloggogenic paddy soil was significantly higher than that of gley type paddy soil,but the desorption capacity of waterloggogenic paddy soil was less than gley type paddy soil.In various initial concentration,the desorption rate of gley paddy soil was range from 4.88%to 28.81%,while the desorption rate of waterloggogenic paddy soil was range from4.90%to 20.56%.The adsorption in two paddy soils could be well described by Freundlich equation.The environmental risk of lead decreased first and then increased with lead concentration,and the gley type paddy soil showed better than the waterloggogenic paddy soil.【Conclusion】The gleyed paddy soil is more susceptible to lead pollution when compared with the waterloggogenic paddy soil.
【Objective】In order to investigate the adsorption and desorption characteristics of lead in typical paddy soils of Jiangxi Province.【Method】Gleyed paddy soil and waterloggogenic paddy soil were collected from Jiangxi Province and the batch equilibrium method was employed to investigate the adsorption and desorption behaviors of lead,and the environmental risk of presence of lead in these soils were assessed with retention factors.【Result】The adsorption ability of waterloggogenic paddy soil was significantly higher than that of gley type paddy soil,but the desorption capacity of waterloggogenic paddy soil was less than gley type paddy soil.In various initial concentration,the desorption rate of gley paddy soil was range from 4.88%to 28.81%,while the desorption rate of waterloggogenic paddy soil was range from4.90%to 20.56%.The adsorption in two paddy soils could be well described by Freundlich equation.The environmental risk of lead decreased first and then increased with lead concentration,and the gley type paddy soil showed better than the waterloggogenic paddy soil.【Conclusion】The gleyed paddy soil is more susceptible to lead pollution when compared with the waterloggogenic paddy soil.
引文
[1]曹雪敏,杨虎德.甘肃徽县耕层土壤重金属污染现状评价[J].甘肃农业大学学报,2015,50(5):134-140.
[2]Zhang F J,Ou X X,Chan S H,at al.Competitive adsorption and desorption of copper and lead in some soil of North China[J].Frontiers of Environmental Science&Engineering,2012,6(4):484-492.
[3]王岚,王亚平,徐春雪,等.水稻土中重金属元素Cd、Pb的竞争吸附:以长株潭地区水稻土为例[J].地质通报,2012,31(4):601-607.
[4]王朴.红壤和黄褐土根际土对铅的吸附特性[J].江苏农业科学,2013,41(8):365-367.
[5]林青,徐绍辉.土壤中重金属离子竞争吸附的研究进展[J].土壤,2008,40(5):706-711.
[6]乔冬梅,齐学斌,庞鸿宾,等.不同pH值条件下重金属Pb2+的吸附解吸研究[J].土壤通报,2011,42(1):38-41.
[7]刘妍,朱晓龙,丁咸庆,等.不同母质发育水稻土对Cd、Pb吸附解吸特性及其影响因子分析[J].农业现代化研究,2014,35(5):663-667.
[8]Xu R K,Zhao A Z.Effect of biochars on adsorption of Cu(II),Pb(II)and Cd(II)by three variable charge soils from southern China[J].Environmental Science and Pollution Research,2013,20(12):8491-8501.
[9]Jiang H,Li T Q,Han X,at al.Effects of pH and low molecular weight organic acids on competitive adsorption and desorption of cadmium and lead in paddy soils[J].Environmental Monitoring and Assessment,2012,184(10):6325-6335.
[10]刘平,徐明岗,宋正国.伴随阴离子对土壤中铅和镉吸附-解吸的影响[J].农业环境科学学报,2007,26(1):252-256.
[11]常娟,白玲,冷婧,等.江西省典型水稻土对铜的吸附解吸特性研究[J].江西农业大学学报,2016,38(1):207-214.
[12]范业成,叶厚专.江西红壤性水稻土肥力特性及其管理[J].江西农业学报,1998,10(3):71-75.
[13]Li T Q,Jiang H,Yang X,et al.Competitive sorption and desorption of cadmium and lead in paddy soils of eastern China[J].Environmental Earth Sciences,2013,68(6):1599-1607.
[14]Diagboy P N,Olu-Owalabi B I,Adebowale K O.Effects of time,soil organic matter,and iron oxides on the relative retention and redistribution of lead,cadmium,and copper on soils[J].Environmental Science and Pollution Research,2015,22(13):10331-10339.
[15]左继超.磷和柠檬酸共存对红壤胶体固定铅的影响机理研究[D].武汉:华中农业大学,2014.
[16]杨金燕,杨肖娥,何振立,等.土壤中铅的吸附-解吸行为研究进展[J].生态环境,2005,14(1):102-107.
[17]贺文林,夏建国,江承香,等.柠檬酸对黄壤无机纳米微粒吸附-解吸Cd2+的影响[J].水土保持学报,2015(2):242-247.
[2]Zhang F J,Ou X X,Chan S H,at al.Competitive adsorption and desorption of copper and lead in some soil of North China[J].Frontiers of Environmental Science&Engineering,2012,6(4):484-492.
[3]王岚,王亚平,徐春雪,等.水稻土中重金属元素Cd、Pb的竞争吸附:以长株潭地区水稻土为例[J].地质通报,2012,31(4):601-607.
[4]王朴.红壤和黄褐土根际土对铅的吸附特性[J].江苏农业科学,2013,41(8):365-367.
[5]林青,徐绍辉.土壤中重金属离子竞争吸附的研究进展[J].土壤,2008,40(5):706-711.
[6]乔冬梅,齐学斌,庞鸿宾,等.不同pH值条件下重金属Pb2+的吸附解吸研究[J].土壤通报,2011,42(1):38-41.
[7]刘妍,朱晓龙,丁咸庆,等.不同母质发育水稻土对Cd、Pb吸附解吸特性及其影响因子分析[J].农业现代化研究,2014,35(5):663-667.
[8]Xu R K,Zhao A Z.Effect of biochars on adsorption of Cu(II),Pb(II)and Cd(II)by three variable charge soils from southern China[J].Environmental Science and Pollution Research,2013,20(12):8491-8501.
[9]Jiang H,Li T Q,Han X,at al.Effects of pH and low molecular weight organic acids on competitive adsorption and desorption of cadmium and lead in paddy soils[J].Environmental Monitoring and Assessment,2012,184(10):6325-6335.
[10]刘平,徐明岗,宋正国.伴随阴离子对土壤中铅和镉吸附-解吸的影响[J].农业环境科学学报,2007,26(1):252-256.
[11]常娟,白玲,冷婧,等.江西省典型水稻土对铜的吸附解吸特性研究[J].江西农业大学学报,2016,38(1):207-214.
[12]范业成,叶厚专.江西红壤性水稻土肥力特性及其管理[J].江西农业学报,1998,10(3):71-75.
[13]Li T Q,Jiang H,Yang X,et al.Competitive sorption and desorption of cadmium and lead in paddy soils of eastern China[J].Environmental Earth Sciences,2013,68(6):1599-1607.
[14]Diagboy P N,Olu-Owalabi B I,Adebowale K O.Effects of time,soil organic matter,and iron oxides on the relative retention and redistribution of lead,cadmium,and copper on soils[J].Environmental Science and Pollution Research,2015,22(13):10331-10339.
[15]左继超.磷和柠檬酸共存对红壤胶体固定铅的影响机理研究[D].武汉:华中农业大学,2014.
[16]杨金燕,杨肖娥,何振立,等.土壤中铅的吸附-解吸行为研究进展[J].生态环境,2005,14(1):102-107.
[17]贺文林,夏建国,江承香,等.柠檬酸对黄壤无机纳米微粒吸附-解吸Cd2+的影响[J].水土保持学报,2015(2):242-247.