合肥地区土壤中Zn元素的缓变型地球化学灾害特征
|
摘要
为了给土壤重金属污染提供定量依据,该文在缓变型地球化学灾害基本模型的基础上,基于土壤中Zn元素含量实测数据,分别研究了合肥大兴镇地区和义城镇地区土壤中Zn元素的缓变型地球化学灾害特征并进行了对比,确定其数学模型。研究结果显示,大兴镇地区土壤中Zn元素有从可释放态向有效态(TRCPZn→ZnE+C)释放转化的趋势,其缓变型地球化学灾害临界值为70.333 mg∕kg,约22.6%面积的土壤具有爆发Zn元素缓变型地球化学灾害的可能性。而义城镇地区土壤中Zn元素还不具有爆发缓变型地球化学灾害的可能性。
To provide the mensurable evidence for early-warning of soil heavy metal pollution,base on the mathematical model of delayed geochemical hazard(DGH) and according to experimental data of Zn element in soil,the DGH characteristics of Zn element in soil of Daxing town and Yicheng town in Hefei area were studied and contrasted,then the model of Zn element was determined.The results show that in Daxing town the Zn element in soil has the inverting trend form total releasable state to exchangeable and carbonate state,the critical concentration of Zn element in soil was 70.333mg/kg,DGH of Zn element has the possibility to break out in about 22.6% soil area.In Yicheng town,DGH has no possibility to break out.
To provide the mensurable evidence for early-warning of soil heavy metal pollution,base on the mathematical model of delayed geochemical hazard(DGH) and according to experimental data of Zn element in soil,the DGH characteristics of Zn element in soil of Daxing town and Yicheng town in Hefei area were studied and contrasted,then the model of Zn element was determined.The results show that in Daxing town the Zn element in soil has the inverting trend form total releasable state to exchangeable and carbonate state,the critical concentration of Zn element in soil was 70.333mg/kg,DGH of Zn element has the possibility to break out in about 22.6% soil area.In Yicheng town,DGH has no possibility to break out.
引文
[1]朱荫滔,周启星.土壤污染与我国农业环境保护的现状、理论和展望[J].土壤通报,1999,30(3):132-136
[2]钟晓兰,周生路,赵其国.城乡结合部土壤污染及其生态环境效应[J].土壤,2006,38(2):122-129
[3]王国梁,周生路,赵其国,等.菜地土壤剖面上重金属元素含量随时间的变化规律研究[J].农业工程学报,2006,22(1):79-84.
[4]Stigliani W M.Changes in valued“capacities”of soils and sediments as indicators and time delayed environmental effects[J].Enviromental Monitoring and Assessment,1988,10:245-307.
[5]Stigliani W M,Doelman P,Salomons W.Chemical time bombs:Predicting the un-predic-table[J].Environment,1991,33(4):4-30.
[6]Xie Xuejin.Research of chemical time bomb[J].China Geological Acta,1993,20(4):18-19.
[7]林玉锁,李波,张孝飞.我国土壤环境安全面临的突出问题[J].环境保护,2004,(10):15-17.
[8]龚子同,黄标.关于土壤中“化学定时炸弹”及其触爆因素的探讨[J].地球科学进展,1998,13(2):184-191.
[9]谢学锦.化学定时炸弹与可持续发展[J].科学中国人,1997,(5):13-16.
[10]严光生,谢学锦.“化学定时炸弹”与可持续发展[J].中国地质,2001,28(1):13-18.
[11]陈明,冯流,Yvon J.缓变型地球化学灾害:概念、模型及案例研究[J].中国科学D辑,2005,35(增刊I):261-266.
[12]Chen Ming,Feng Liu,Yvon J.Accumulation and release of typical heavy metals in soil and chemical timing bombs[A].International Conference on Environmental and Public health,Management[C].Hongkong:Hongkong Baptist University,2004.
[13]陈明,曹晓娟,谭科艳,等.土壤环境中化学定时炸弹的研究现状与展望[J].地质学报,2006,80(10):1607-1615.
[14]安徽省地质调查院.合肥市江淮分水岭地区区域生态地球化学评价报告[R].2007.
[15]胡省英,冉伟彦,范宏瑞.土壤-作物系统中重金属元素的地球化学行为[J].地质与勘探,2003,39(5):84-87.
[16]吴新民,李恋卿,潘根兴,等.南京市不同功能区土壤中重金属Cu、Pb、Zn、Cd的污染特征[J].环境科学,2003,24(3):105-110.
[17]Tessier A,Campbell P C,Bisson M.Sequential extraction procedure for the speciation of particulate trace metals[J].Analytica Chimica Acta,1979,51:844-850.
[2]钟晓兰,周生路,赵其国.城乡结合部土壤污染及其生态环境效应[J].土壤,2006,38(2):122-129
[3]王国梁,周生路,赵其国,等.菜地土壤剖面上重金属元素含量随时间的变化规律研究[J].农业工程学报,2006,22(1):79-84.
[4]Stigliani W M.Changes in valued“capacities”of soils and sediments as indicators and time delayed environmental effects[J].Enviromental Monitoring and Assessment,1988,10:245-307.
[5]Stigliani W M,Doelman P,Salomons W.Chemical time bombs:Predicting the un-predic-table[J].Environment,1991,33(4):4-30.
[6]Xie Xuejin.Research of chemical time bomb[J].China Geological Acta,1993,20(4):18-19.
[7]林玉锁,李波,张孝飞.我国土壤环境安全面临的突出问题[J].环境保护,2004,(10):15-17.
[8]龚子同,黄标.关于土壤中“化学定时炸弹”及其触爆因素的探讨[J].地球科学进展,1998,13(2):184-191.
[9]谢学锦.化学定时炸弹与可持续发展[J].科学中国人,1997,(5):13-16.
[10]严光生,谢学锦.“化学定时炸弹”与可持续发展[J].中国地质,2001,28(1):13-18.
[11]陈明,冯流,Yvon J.缓变型地球化学灾害:概念、模型及案例研究[J].中国科学D辑,2005,35(增刊I):261-266.
[12]Chen Ming,Feng Liu,Yvon J.Accumulation and release of typical heavy metals in soil and chemical timing bombs[A].International Conference on Environmental and Public health,Management[C].Hongkong:Hongkong Baptist University,2004.
[13]陈明,曹晓娟,谭科艳,等.土壤环境中化学定时炸弹的研究现状与展望[J].地质学报,2006,80(10):1607-1615.
[14]安徽省地质调查院.合肥市江淮分水岭地区区域生态地球化学评价报告[R].2007.
[15]胡省英,冉伟彦,范宏瑞.土壤-作物系统中重金属元素的地球化学行为[J].地质与勘探,2003,39(5):84-87.
[16]吴新民,李恋卿,潘根兴,等.南京市不同功能区土壤中重金属Cu、Pb、Zn、Cd的污染特征[J].环境科学,2003,24(3):105-110.
[17]Tessier A,Campbell P C,Bisson M.Sequential extraction procedure for the speciation of particulate trace metals[J].Analytica Chimica Acta,1979,51:844-850.
目录