外源铅在4种土壤中的老化特征及对土壤化学性质的影响
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摘要
采用化学提取和梯度薄膜扩散技术(DGT)探究外源铅(Pb)在不同类型土壤中老化的形态变化规律,考察了外源Pb添加对土壤pH、阳离子交换量(CEC)和可溶性有机质(DOC)等的影响,初步建立了土壤Pb生物有效性的预测模型.结果表明:EDTA提取态Pb含量随老化时间的延长而降低;准二级动力学方程可较好地表达有效态Pb在老化过程中的动力学特征,方程的参数反映了Pb处理浓度的增加延长了老化达平衡的时间,所有供试土壤的EDTA提取态Pb含量在3个月后基本达到老化平衡;不同提取态Pb含量和变化不同,CaCl_2提取态Pb含量最少、变化最大,HNO_3提取态Pb含量变化最小;外源Pb添加会降低土壤pH,但对CEC和DOC无明显影响;随着老化时间的延长,土壤pH升高,CEC无明显变化,DOC显著降低;土壤水溶态Pb和DOC可用来预测DGT测定的有效态Pb含量,预测效果较好.
Chemical single extraction methods and diffusive gradients in thin-films technique(DGT) were coupled to investigate the change of Pb speciation in different aging soils. And the influence of exogenous Pb on the soil pH value, cation exchange capacity(CEC) and dissolved organic carbon(DOC) was examined. Also, a regression prediction model of Pb bioavailability was built. The results showed that the concentration of EDTA extractable Pb decreased with aging time. Pseudo-second-order model fitted the dynamic process of available Pb well, of which the parameters showed that the increase of exogenous Pb concentration would prolong the time to reach equilibrium, and the concentration of EDTA extractable Pb in all treatments could reach equilibrium after 3 months. Moreover, different extracts showed different effects. The concentration of CaCl_2 extractable Pb was the lowest among all the extractable Pb, which also changed fastest, while the concentration of HNO_3 extractable Pb changed slowest. Besides, the addition of exogenous Pb reduced soil pH, but had no effect on CEC and DOC. The pH value decreased with aging time. Meanwhile, no significant differences were found for the CEC value, but DOC decreased significantly with aging time. Also, the concentration of H_2O extractable Pb and DOC can predict available Pb measured by DGT.
Chemical single extraction methods and diffusive gradients in thin-films technique(DGT) were coupled to investigate the change of Pb speciation in different aging soils. And the influence of exogenous Pb on the soil pH value, cation exchange capacity(CEC) and dissolved organic carbon(DOC) was examined. Also, a regression prediction model of Pb bioavailability was built. The results showed that the concentration of EDTA extractable Pb decreased with aging time. Pseudo-second-order model fitted the dynamic process of available Pb well, of which the parameters showed that the increase of exogenous Pb concentration would prolong the time to reach equilibrium, and the concentration of EDTA extractable Pb in all treatments could reach equilibrium after 3 months. Moreover, different extracts showed different effects. The concentration of CaCl_2 extractable Pb was the lowest among all the extractable Pb, which also changed fastest, while the concentration of HNO_3 extractable Pb changed slowest. Besides, the addition of exogenous Pb reduced soil pH, but had no effect on CEC and DOC. The pH value decreased with aging time. Meanwhile, no significant differences were found for the CEC value, but DOC decreased significantly with aging time. Also, the concentration of H_2O extractable Pb and DOC can predict available Pb measured by DGT.
引文
陈晨. 2008. 添加秸秆对污染土壤重金属活度的影响及对水体重金属的吸附效应 [D]. 江苏: 扬州大学
陈亚斯. 2016. 麦秸淹水腐解对土壤Cd活度的影响及其与DOC的关系 [D]. 江苏: 扬州大学
Comaschi T, Meneghini C, Businelli D,et al. 2011. XAS study of lead speciation in a central Italy calcareous soil [J]. Environmental Science and Pollution Research,18(4): 669-676
Dayton E A, Basta N T, Payton M E, et al. 2006. Evaluating the contribution of soil properties to modifying lead phytoavailability and phytotoxicity [J]. Environmental Toxicology and Chemistry, 25(3): 719-725
邓琳, 李柱, 吴龙华, 等. 2014. 水分及干燥过程对土壤重金属有效性的影响 [J]. 土壤,46(6): 1045-1051
Guo G, Yuan T, Wang W, et al. 2011. Effect of aging on bioavailability of copper on the fluvo aquic soil [J]. International Journal of Environmental Science and Technology, 8(4): 715-722
Gusiatin Z M, Kulikowska D. 2016. Influence of soil aging and stabilization with compost on Zn and Cu fractionation, stability, and mobility [J]. CLEAN - Soil, Air, Water, 44(3): 272-283
Hernandez-Soriano M C, Jimenez-Lopez J C. 2012. Effects of soil water content and organic matter addition on the speciation and bioavailability of heavy metals [J]. Science of the Total Environment, 423: 55-61
环境保护部, 国土资源部. 2014. 全国土壤污染状况调查公报 [J]. 中国环保产业, (5): 10-11
Kodirov O, Kersten M, Shukurov N, et al. 2018. Trace metal(loid) mobility in waste deposits and soils around Chadak mining area, Uzbekistan [J]. Science of the Total Environment, 622: 1658-1667
Landrot G, Khaokaew S. 2018. Lead speciation and association with organic matter in various particle-size fractions of contaminated soils [J]. Environmental Science & Technology, 52(12): 6780-6788
Li J, Peng Q, Liang D, et al. 2016. Effects of aging on the fraction distribution and bioavailability of selenium in three different soils [J]. Chemosphere,144: 2351-2359
李玲, 仇少君, 刘京涛, 等. 2012. 土壤溶解性有机碳在陆地生态系统碳循环中的作用 [J]. 应用生态学报, 23(5): 1407-1414
Liang S, Guan D X, Ren J H, et al. 2014. Effect of aging on arsenic and lead fractionation and availability in soils: coupling sequential extractions with diffusive gradients in thin-films technique [J]. Journal of Hazardous Materials, 273: 272-279
Lindsay W L. 1979. Chemical equilibria in soils [M]. John Wiley and Sons Ltd.
刘彬, 孙聪, 陈世宝, 等. 2015. 水稻土中外源Cd老化的动力学特征与老化因子 [J]. 中国环境科学, 35(7): 2137-2145
Lock K, Janssen C R. 2003. Influence of aging on metal availability in soils [J]. Reviews of Environmental Contamination and Toxicology, 178: 1-21
Lou Y, Li Z, Zhang T,et al. 2004. CO2 emission from subtropical arable soils of China [J]. Soil Biology & Biochemistry, 36(11): 1835-1842
Ma Y, Lombi E, McLaughlin M J, et al. 2013. Aging of nickel added to soils as predicted by soil pH and time [J]. Chemosphere, 92(8): 962-968
Nagajyoti P C, Lee K D, Sreekanth T V M. 2010. Heavy metals, occurrence and toxicity for plants: a review [J]. Environmental Chemistry Letters, 8: 199-216
Payá-pérez A, Sala J, Mousty F. 1993. Comparison of ICP-AES and ICP-MS for the analysis of trace elements in soil extracts [J]. International Journal of Environmental Analytical Chemistry, 51(1/4): 223-230
Peng L, Liu P, Feng X, et al. 2018. Kinetics of heavy metal adsorption and desorption in soil: Developing a unified model based on chemical speciation [J]. Geochimica Et Cosmochimica Acta, 224: 282-300
Qin F, Shan X Q, Wei B. 2004. Effects of low-molecular-weight organic acids and residence time on desorption of Cu, Cd, and Pb from soils [J]. Chemosphere, 57(4): 253-263
Sauvé S, Hendershot W, Allen H E. 2000. Solid-solution partitioning of metals in contaminated soils: dependence on pH,total metal burden,and organic matter[J]. Environmental Science & Technology, 34(7): 1125-1131
Singh O V, Labana S, Pandey G, et al. 2003. Phytoremediation: an overview of metallic ion decontamination from soil [J]. Applied Microbiology Biotechnology, 61(5/6): 405-412
Speir T W, Kettles H A, Percival H J,et al. 1999. Is soil acidification the cause of biochemical responses when soils are amended with heavy metal salts? [J]. Soil Biology & Biochemistry,31(14): 1953-1961
Usman A R A. 2008. The relative adsorption selectivities of Pb, Cu, Zn, Cd and Ni by soils developed on shale in New Valley, Egypt [J]. Geoderma,144 (1/2): 334-343
Wang S, Wu Z, Luo J. 2018. Transfer mechanism, uptake kinetic process, and bioavailability of P, Cu, Cd, Pb, and Zn in macrophyte rhizosphere using diffusive gradients in thin films [J]. Environmental Science & Technology, 52(3): 1096-1108
王旭. 2005. 外源水溶性铅镉在土壤中的形态转化随时间的变化 [D]. 辽宁: 沈阳农业大学
Wang Y, Zeng X, Lu Y, et al. 2015. Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China [J]. Environmental Pollution, 207: 79-87
杨金燕, 杨肖娥, 何振立, 等. 2005. 土壤中铅的吸附-解吸行为研究进展 [J]. 生态环境, 14(1): 102-107
余贵芬, 蒋新, 和文祥, 等. 2002. 腐殖酸对红壤中铅镉赋存形态及活性的影响 [J]. 环境科学学报, 22(4): 508-513
Zhang H, Lombi E, Smolders E, et al. 2004. Kinetics of Zn release in soils and prediction of Zn concentration in plants using diffusive gradients in thin films[J]. Environmental Science & Technology, 38(13): 3608-3613
张小敏, 张秀英, 钟太洋, 等. 2014. 中国农田土壤重金属富集状况及其空间分布研究 [J]. 环境科学, 35(2): 692-703
郑顺安, 郑向群, 李晓辰, 等. 2013. 外源Cr(III)在我国22种典型土壤中的老化特征及关键影响因子研究 [J]. 环境科学,34(2): 698-704
周世伟. 2007. 外源铜在土壤矿物中的老化过程及影响因素研究 [D]. 北京: 中国农业科学院
陈亚斯. 2016. 麦秸淹水腐解对土壤Cd活度的影响及其与DOC的关系 [D]. 江苏: 扬州大学
Comaschi T, Meneghini C, Businelli D,et al. 2011. XAS study of lead speciation in a central Italy calcareous soil [J]. Environmental Science and Pollution Research,18(4): 669-676
Dayton E A, Basta N T, Payton M E, et al. 2006. Evaluating the contribution of soil properties to modifying lead phytoavailability and phytotoxicity [J]. Environmental Toxicology and Chemistry, 25(3): 719-725
邓琳, 李柱, 吴龙华, 等. 2014. 水分及干燥过程对土壤重金属有效性的影响 [J]. 土壤,46(6): 1045-1051
Guo G, Yuan T, Wang W, et al. 2011. Effect of aging on bioavailability of copper on the fluvo aquic soil [J]. International Journal of Environmental Science and Technology, 8(4): 715-722
Gusiatin Z M, Kulikowska D. 2016. Influence of soil aging and stabilization with compost on Zn and Cu fractionation, stability, and mobility [J]. CLEAN - Soil, Air, Water, 44(3): 272-283
Hernandez-Soriano M C, Jimenez-Lopez J C. 2012. Effects of soil water content and organic matter addition on the speciation and bioavailability of heavy metals [J]. Science of the Total Environment, 423: 55-61
环境保护部, 国土资源部. 2014. 全国土壤污染状况调查公报 [J]. 中国环保产业, (5): 10-11
Kodirov O, Kersten M, Shukurov N, et al. 2018. Trace metal(loid) mobility in waste deposits and soils around Chadak mining area, Uzbekistan [J]. Science of the Total Environment, 622: 1658-1667
Landrot G, Khaokaew S. 2018. Lead speciation and association with organic matter in various particle-size fractions of contaminated soils [J]. Environmental Science & Technology, 52(12): 6780-6788
Li J, Peng Q, Liang D, et al. 2016. Effects of aging on the fraction distribution and bioavailability of selenium in three different soils [J]. Chemosphere,144: 2351-2359
李玲, 仇少君, 刘京涛, 等. 2012. 土壤溶解性有机碳在陆地生态系统碳循环中的作用 [J]. 应用生态学报, 23(5): 1407-1414
Liang S, Guan D X, Ren J H, et al. 2014. Effect of aging on arsenic and lead fractionation and availability in soils: coupling sequential extractions with diffusive gradients in thin-films technique [J]. Journal of Hazardous Materials, 273: 272-279
Lindsay W L. 1979. Chemical equilibria in soils [M]. John Wiley and Sons Ltd.
刘彬, 孙聪, 陈世宝, 等. 2015. 水稻土中外源Cd老化的动力学特征与老化因子 [J]. 中国环境科学, 35(7): 2137-2145
Lock K, Janssen C R. 2003. Influence of aging on metal availability in soils [J]. Reviews of Environmental Contamination and Toxicology, 178: 1-21
Lou Y, Li Z, Zhang T,et al. 2004. CO2 emission from subtropical arable soils of China [J]. Soil Biology & Biochemistry, 36(11): 1835-1842
Ma Y, Lombi E, McLaughlin M J, et al. 2013. Aging of nickel added to soils as predicted by soil pH and time [J]. Chemosphere, 92(8): 962-968
Nagajyoti P C, Lee K D, Sreekanth T V M. 2010. Heavy metals, occurrence and toxicity for plants: a review [J]. Environmental Chemistry Letters, 8: 199-216
Payá-pérez A, Sala J, Mousty F. 1993. Comparison of ICP-AES and ICP-MS for the analysis of trace elements in soil extracts [J]. International Journal of Environmental Analytical Chemistry, 51(1/4): 223-230
Peng L, Liu P, Feng X, et al. 2018. Kinetics of heavy metal adsorption and desorption in soil: Developing a unified model based on chemical speciation [J]. Geochimica Et Cosmochimica Acta, 224: 282-300
Qin F, Shan X Q, Wei B. 2004. Effects of low-molecular-weight organic acids and residence time on desorption of Cu, Cd, and Pb from soils [J]. Chemosphere, 57(4): 253-263
Sauvé S, Hendershot W, Allen H E. 2000. Solid-solution partitioning of metals in contaminated soils: dependence on pH,total metal burden,and organic matter[J]. Environmental Science & Technology, 34(7): 1125-1131
Singh O V, Labana S, Pandey G, et al. 2003. Phytoremediation: an overview of metallic ion decontamination from soil [J]. Applied Microbiology Biotechnology, 61(5/6): 405-412
Speir T W, Kettles H A, Percival H J,et al. 1999. Is soil acidification the cause of biochemical responses when soils are amended with heavy metal salts? [J]. Soil Biology & Biochemistry,31(14): 1953-1961
Usman A R A. 2008. The relative adsorption selectivities of Pb, Cu, Zn, Cd and Ni by soils developed on shale in New Valley, Egypt [J]. Geoderma,144 (1/2): 334-343
Wang S, Wu Z, Luo J. 2018. Transfer mechanism, uptake kinetic process, and bioavailability of P, Cu, Cd, Pb, and Zn in macrophyte rhizosphere using diffusive gradients in thin films [J]. Environmental Science & Technology, 52(3): 1096-1108
王旭. 2005. 外源水溶性铅镉在土壤中的形态转化随时间的变化 [D]. 辽宁: 沈阳农业大学
Wang Y, Zeng X, Lu Y, et al. 2015. Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China [J]. Environmental Pollution, 207: 79-87
杨金燕, 杨肖娥, 何振立, 等. 2005. 土壤中铅的吸附-解吸行为研究进展 [J]. 生态环境, 14(1): 102-107
余贵芬, 蒋新, 和文祥, 等. 2002. 腐殖酸对红壤中铅镉赋存形态及活性的影响 [J]. 环境科学学报, 22(4): 508-513
Zhang H, Lombi E, Smolders E, et al. 2004. Kinetics of Zn release in soils and prediction of Zn concentration in plants using diffusive gradients in thin films[J]. Environmental Science & Technology, 38(13): 3608-3613
张小敏, 张秀英, 钟太洋, 等. 2014. 中国农田土壤重金属富集状况及其空间分布研究 [J]. 环境科学, 35(2): 692-703
郑顺安, 郑向群, 李晓辰, 等. 2013. 外源Cr(III)在我国22种典型土壤中的老化特征及关键影响因子研究 [J]. 环境科学,34(2): 698-704
周世伟. 2007. 外源铜在土壤矿物中的老化过程及影响因素研究 [D]. 北京: 中国农业科学院
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