摘要
以氢化物-原子荧光法为主要研究手段,结合其他仪器和化学分析方法,以Statistical Program for Social Sciences(SPSS)数理统计软件为研究工具,研究了不同性质土壤中的镉形态分布特点,土壤中各形态镉之间以及与土壤性质之间的关系。实验结果表明:所试15个土壤样品中,有12个样品镉总量超过国家二级土壤标准;土壤有效态镉与总镉有显著的线性相关;所试土壤镉赋存形态以可交换态为主,各形态镉的变异系数大;各形态镉之间有一定的相关关系;有效态镉是各形态镉的综合反映;土壤环境因素对镉形态分配影响强于化学组成的影响,pH是最活跃的一个影响因素,有机质是除pH外最能影响镉形态的因素。
The Cd speciation distribution in the soil with different properties,the relationship of different speciation of Cd and the relationship between Cd speciation and properties of soil have been studied through hydride generation-atomic fluorescence spectrometry and SPSS statistical software.The results showed that 12 kinds of soil samples were polluted with Cd in the 15 kinds of samples.A significant linear correlation between available Cd and total Cd was found.The exchangeable Cd was the dominating speciation in the samples and the variability of each speciation was greatly.Some relationship between each speciation was also found.The availability was the comprehensive expression for each speciation.The Cd speciation was influenced by the environmental conditions more strongly than by the chemical composition.pH was the dominant factor and the organic matter was the second one.
出处
《南昌大学学报（工科版）》
CAS
2012年第4期341-346,共6页
Journal of Nanchang University(Engineering & Technology)
基金
广东省地质调查资助项目(1212010511216-04-02-01)
成都理工大学研究基金资助项目(2006YG05)
关键词
镉
化学形态
土壤性质
相关分析
cadmium
chemical speciation
soil properties
correlative analysis
