外源有机酸对不同土壤中Cd解吸行为的影响
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摘要
以板页岩母质土壤黄泥田和第四纪红壤母质土壤红黄泥为研究对象,通过老化试验和解吸试验研究草酸、柠檬酸对不同母质土壤中Cd的解吸作用及影响机制。结果表明:黄泥田中Cd的存在形态较红黄泥更易迁移或被利用。随有机酸添加量增加,土壤pH降低,Cd的解吸作用增强。有机酸种类对土壤Cd解吸行为的影响也存在一定差异。去除土壤有机质可以通过改变土壤基团种类和含量影响Cd~(2+)与土壤表面之间的相互作用进而影响Cd的解吸。综合以上结果可知,外源有机酸主要通过影响土壤溶液pH、有机配体与土壤表面及Cd~(2+)的络合反应来影响Cd的解吸,土壤母质类型及其理化性质是影响外源有机酸对土壤中Cd解吸行为的重要因素。
Yellow clayey soil developed from plate shale and red yellow soil developed from quaternary red clay were selected to investigate the desorption effects and the influence mechanisms of oxalic acid and citric acid on soil Cd in different parent soils using aging and desorption experiment.The results show that the speciation of Cd in yellow clayey soil are more likely to migrate or be used compared with red yellow soil.With the increasing of organic acid content,p H value of the soils decreases,and the desorption of Cd is enhanced.The effects of different types of organic acids on the desorption behavior of Cd in soil are also different.The removal of organic matter in soils can promote the desorption effect of organic acid on soil Cd though changing the reactions between Cd~(2+) and soil surface groups.Based on the results above,exogenous organic acids affect Cd desorption mainly by affecting the p H value of soil solutions and the complexation reaction between organic ligands and soil surface and Cd~(2+). The type of soil parent material and its physicochemical properties are important factors affecting the desorption behavior of exogenous organic acids on Cd.
Yellow clayey soil developed from plate shale and red yellow soil developed from quaternary red clay were selected to investigate the desorption effects and the influence mechanisms of oxalic acid and citric acid on soil Cd in different parent soils using aging and desorption experiment.The results show that the speciation of Cd in yellow clayey soil are more likely to migrate or be used compared with red yellow soil.With the increasing of organic acid content,p H value of the soils decreases,and the desorption of Cd is enhanced.The effects of different types of organic acids on the desorption behavior of Cd in soil are also different.The removal of organic matter in soils can promote the desorption effect of organic acid on soil Cd though changing the reactions between Cd~(2+) and soil surface groups.Based on the results above,exogenous organic acids affect Cd desorption mainly by affecting the p H value of soil solutions and the complexation reaction between organic ligands and soil surface and Cd~(2+). The type of soil parent material and its physicochemical properties are important factors affecting the desorption behavior of exogenous organic acids on Cd.
引文
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[19]马云龙，曾清如，胡浩，等．低分子有机酸对土壤中重金属的解吸及影响因素[J]．土壤通报，2008,39(6):1419-1423.
[20]王金贵，吕家珑，李宗仁．小分子有机酸对六种典型土壤中镉吸附-解吸的影响[J]．土壤通报，2013,44(6):1501-1507.
[21]李影．有机质处理对褐土和暗棕壤中铜、镉形态及其植物毒性的影响[D]．北京:首都师范大学，2013.
[22]中国科学院南京土壤研究所．土壤理化分析[M]．上海:上海科学技术出版社，1978.
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[25]李小平，徐长林，张旭，等．城市土壤重金属有机酸淋溶特征与动力学机制[J]．水土保持通报，2014,34(6):6-12.
[26]REED B E,CARRIERE P C,MOORE R,et al.Flushing of a Pb(Ⅱ)contaminated soil using HCl,EDTA and Ca Cl2[J]. Journal of Environmental Engineering-ASCE,1996,122:48-50.
[27]YU J,KLARUP D. Extraction kinetics of copper,zinc,iron,and manganese from contaminated sediment using disodium ethylenediaminetetraacetate[J].Water,Air,and Soil Pollution,1994,75(3-4):205-225.
[28]DING Y Z,SONG Z G,FENG R W,et al.Interaction of organic acids and p H on multi-heavy metal extraction from alkaline and acid mine soils[J]. International Journal of Environmental Science&Technology,2014,10(11):33-42.
[29]杨茜，卢越琴，马玲莉，等．淋溶条件下低分子量有机酸对淋出液及三峡库区典型土壤性质的影响[J]．水土保持通报，2016,36(4):175-181.
[30]高彦征，贺纪正，凌婉婷，等．几种有机酸对污染土中Cu解吸的影响[J]．中国环境科学，2002,22(3):244-248.
[31]NAIDU R,HARTER R D. Effect of different organic ligands on cadmium sorption by and extractability from soils[J]. Soil Science Society of America Journal,1998,62(3):644-650.
[32]NAJAFI S,JALALI M.Effects of organic acids on cadmium and copper sorption and desorption by two calcareous soils[J].Environmental Monitoring and Assessment,2015,187(9):585.
[33]SCHWAB A P,ZHU D S,BANKS M K.Influence of organic acids on the transport of heavy metals in soil[J].Chemosphere,2008,72(6):986-994.
[34]曹坤坤，孙燚，王孟，等．不同有机酸对2种污染土壤Cd和Zn的浸提效果[J]．长江大学学报(自科版)，2017,14(22):49-53.
[35]胡浩，潘杰，曾清如，等．低分子有机酸淋溶对土壤中重金属Pb、Cd、Cu和Zn的影响[J]．农业环境科学学报，2008,27(4):1611-1616.
[36]周鑫斌，黄建国，赖凡．pH和有机酸对酸性紫色土吸附-解吸镉的影响[J]．水土保持学报，2007,21(6):139-142.
[37]JIANG H,LI T,HAN X,et al.Effects of p H 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.
[38]JING Y D,HE Z L,YANG X E. Effects of p H,organic acids,and competitive cations on mercury desorption in soils[J].Chemosphere,2007,69(10):1662-1669.
[39]陆文龙，曹一平，张福锁．根分泌的有机酸对土壤磷和微量元素的活化作用[J]．应用生态学报，1999,10(3):379-382.
[40]李杰颖，梁成华，杜立宇．土壤有机质对汞在棕壤中吸附—解吸行为的影响[J]．水土保持通报，2014,34(6):32-42.
[41]DIAGBOYA P N,OLUOWOLABI 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 International,2015,22(13):10331-10339.
[42]HOODA P S,ALLOWAY B J.Cadmium and lead sorption behavior of selected English and Indian soils[J]. Geoderma,1998,84(1-3):121-134.
[43]ZHAO X,JIANG T,DU B.Effect of organic matter and calcium carbonate on behaviors of cadmium adsorption-desorption on/from purple paddy soils[J]. Chemosphere,2014,99(3):41-48.
[2]魏佳，李取生，徐智敏，等．多种有机酸对土壤中碳酸镉的活化效应[J]．环境工程学报，2017,11(9):5298-5306.
[3]刘清，王子健，汤鸿霄．重金属形态与生物毒性及生物有效性关系的研究进展[J]．环境科学，1996,17(1):89-92.
[4]陈楠，张昊，杨慧敏，等．土壤p H对土壤镉形态及稻米镉积累的影响[J]．湖南农业大学学报(自然科学版)，2018,44(2):176-182.
[5]张燕，铁柏清，刘孝利，等．玉米秸秆生物炭对稻田土壤砷、镉形态的影响[J]．环境科学学报，2018,38(2):715-721.
[6]毛凌晨，叶华．氧化还原电位对土壤中重金属环境行为的影响研究进展[J]．环境科学研究，2018,31(10):1669-1676.
[7]缑栋栋．有机质和凹凸棒对土壤中Cd形态变化的影响[D]．兰州:兰州交通大学，2016.
[8]徐宁彤，谷思玉，刘胜利，等．有机质对黑土中Cd、Cu、Zn、As的吸附解吸行为的影响[J]．黑龙江水利科技，1999,15(1):60-61.
[9]蒋凯，龙坚，李欣阳，等．外源Cl-添加对不同母质土壤溶液Cd2+浓度的影响[J]．环境科学学报，2019,39(2):553-559.
[10]赵宽，周葆华，马万征，等．不同环境胁迫对根系分泌有机酸的影响研究进展[J]．土壤，2016,48(2):235-240.
[11]罗晓蔓，周书宇，杨雪．植物根系分泌物的分类和作用[J]．安徽农业科学，2019,47(4):37-39,45.
[12]JONES D L.Organic acids in the rhizosphere-a critical review[J].Plant and Soil,1998,205(1):25-44.
[13]曾清如，周细红，廖柏寒，等．低分子有机酸对茶园土壤中Al、F、P、Cu、Zn、Fe、Mn的活化效应[J]．茶叶科学，2001,21(1):48-52.
[14]WASAY S A,BARRINGTON S,TOKUNAGA S. Organic acids for the in situ remediation of soils polluted by heavy metals:soil flushing in columns[J]. Water,Air,and Soil Pollution,2001,127(1-4):301-314.
[15]EVANGELOU M W H,EBEL M,SCHAEFFER A.Chelate assisted phytoextraction of heavy metals from soil. Effect,mechanism,toxicity,and fate of chelating agents[J].Chemosphere,2007,68(6):989-1003.
[16]WANG J G,LV J L,FU Y L.Effects of organic acids on Cd adsorption and desorption by two anthropic soils[J].Frontiers of Environmental Science&Engineering,2013,7(1):19-30.
[17]周东美，郑春荣，陈怀满．镉与柠檬酸、EDTA在几种典型土壤中交互作用的研究[J]．土壤学报，2002,39(1):29-36.
[18]高彦征，贺纪正，凌婉婷．有机酸对土壤中镉的解吸及影响因素[J]．土壤学报，2003,40(5):731-737.
[19]马云龙，曾清如，胡浩，等．低分子有机酸对土壤中重金属的解吸及影响因素[J]．土壤通报，2008,39(6):1419-1423.
[20]王金贵，吕家珑，李宗仁．小分子有机酸对六种典型土壤中镉吸附-解吸的影响[J]．土壤通报，2013,44(6):1501-1507.
[21]李影．有机质处理对褐土和暗棕壤中铜、镉形态及其植物毒性的影响[D]．北京:首都师范大学，2013.
[22]中国科学院南京土壤研究所．土壤理化分析[M]．上海:上海科学技术出版社，1978.
[23]鲁如坤．土壤农业化学分析方法[M]．北京:科学出版社，2000:205-226.
[24]CHEN Q,PENG P,HOU H,et al.Effects of soil properties on the Cd threshold in typical paddy soils using BCR sequential extraction[J]. Human and Ecological Risk Assessment An International Journal,2019:1-14.
[25]李小平，徐长林，张旭，等．城市土壤重金属有机酸淋溶特征与动力学机制[J]．水土保持通报，2014,34(6):6-12.
[26]REED B E,CARRIERE P C,MOORE R,et al.Flushing of a Pb(Ⅱ)contaminated soil using HCl,EDTA and Ca Cl2[J]. Journal of Environmental Engineering-ASCE,1996,122:48-50.
[27]YU J,KLARUP D. Extraction kinetics of copper,zinc,iron,and manganese from contaminated sediment using disodium ethylenediaminetetraacetate[J].Water,Air,and Soil Pollution,1994,75(3-4):205-225.
[28]DING Y Z,SONG Z G,FENG R W,et al.Interaction of organic acids and p H on multi-heavy metal extraction from alkaline and acid mine soils[J]. International Journal of Environmental Science&Technology,2014,10(11):33-42.
[29]杨茜，卢越琴，马玲莉，等．淋溶条件下低分子量有机酸对淋出液及三峡库区典型土壤性质的影响[J]．水土保持通报，2016,36(4):175-181.
[30]高彦征，贺纪正，凌婉婷，等．几种有机酸对污染土中Cu解吸的影响[J]．中国环境科学，2002,22(3):244-248.
[31]NAIDU R,HARTER R D. Effect of different organic ligands on cadmium sorption by and extractability from soils[J]. Soil Science Society of America Journal,1998,62(3):644-650.
[32]NAJAFI S,JALALI M.Effects of organic acids on cadmium and copper sorption and desorption by two calcareous soils[J].Environmental Monitoring and Assessment,2015,187(9):585.
[33]SCHWAB A P,ZHU D S,BANKS M K.Influence of organic acids on the transport of heavy metals in soil[J].Chemosphere,2008,72(6):986-994.
[34]曹坤坤，孙燚，王孟，等．不同有机酸对2种污染土壤Cd和Zn的浸提效果[J]．长江大学学报(自科版)，2017,14(22):49-53.
[35]胡浩，潘杰，曾清如，等．低分子有机酸淋溶对土壤中重金属Pb、Cd、Cu和Zn的影响[J]．农业环境科学学报，2008,27(4):1611-1616.
[36]周鑫斌，黄建国，赖凡．pH和有机酸对酸性紫色土吸附-解吸镉的影响[J]．水土保持学报，2007,21(6):139-142.
[37]JIANG H,LI T,HAN X,et al.Effects of p H 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.
[38]JING Y D,HE Z L,YANG X E. Effects of p H,organic acids,and competitive cations on mercury desorption in soils[J].Chemosphere,2007,69(10):1662-1669.
[39]陆文龙，曹一平，张福锁．根分泌的有机酸对土壤磷和微量元素的活化作用[J]．应用生态学报，1999,10(3):379-382.
[40]李杰颖，梁成华，杜立宇．土壤有机质对汞在棕壤中吸附—解吸行为的影响[J]．水土保持通报，2014,34(6):32-42.
[41]DIAGBOYA P N,OLUOWOLABI 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 International,2015,22(13):10331-10339.
[42]HOODA P S,ALLOWAY B J.Cadmium and lead sorption behavior of selected English and Indian soils[J]. Geoderma,1998,84(1-3):121-134.
[43]ZHAO X,JIANG T,DU B.Effect of organic matter and calcium carbonate on behaviors of cadmium adsorption-desorption on/from purple paddy soils[J]. Chemosphere,2014,99(3):41-48.
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