ICP-OES测定三种方法消解土壤中重金属含量的研究
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摘要
采用电热板消解、全自动石墨消解、微波消解三种不同的消解方法对四种土壤标准样品进行前处理消解,使用电感耦合等离子体发射光谱仪(ICP-OES)测定其中Pb、Cu、Zn、Ni、Cr五种重金属的含量,并对三种消解方法效果进行对比。结果表明,在检出限方面,三种方法均达到要求,微波消解检出限最低。在精密性上,三种方法的五种元素的相对标准偏差均小于10%。在准确性方面,电热板消解后Pb的测定出现个别值不在标准值范围。
Three different digestion methods, such as electrothermal plate digestion, fully automatic graphite digestion and microwave digestion, were used for the pre-treatment and digestion of four kinds of soil standard samples. The contents of five heavy metals Pb, Cu, Zn, Ni and Cr were determined by inductively coupled plasma emission spectrometer(ICP-OES), and compare the effects of three digestion treatment methods. The results show that the three methods meet the requirements, and the microwave digestion method has the lowest detection limit.In terms of precision, the relative standard deviation of the five elements in the three methods is less than 10%. In terms of accuracy, the determination of Pb after the digestion of the electrothermal plate showed individual values that were not within the range of standard values.
Three different digestion methods, such as electrothermal plate digestion, fully automatic graphite digestion and microwave digestion, were used for the pre-treatment and digestion of four kinds of soil standard samples. The contents of five heavy metals Pb, Cu, Zn, Ni and Cr were determined by inductively coupled plasma emission spectrometer(ICP-OES), and compare the effects of three digestion treatment methods. The results show that the three methods meet the requirements, and the microwave digestion method has the lowest detection limit.In terms of precision, the relative standard deviation of the five elements in the three methods is less than 10%. In terms of accuracy, the determination of Pb after the digestion of the electrothermal plate showed individual values that were not within the range of standard values.
引文
[1]胡艳丽,夏杰,张自全,等.电热板消解ICP-AES法测定农田土壤中的重金属[J].四川环境, 2014, 33(4):62-65.
[2]梁凤玲,章雪明,黄芳,等.电热板消解-ICP-MS法测定耕地土壤中6种重金属元素[J].现代农业科技, 2018(5):183-184.
[3]GB/T 17138-1997土壤质量铜、锌的测定火焰原子吸收分光光度法[S]. 1997.
[4]王东,胡珊.全自动石墨消解电感耦合等离子质谱法测定土壤中的重金属[J].中国资源综合利用, 2018, 36(4):27-28, 37.
[5]李承.全自动石墨消解-ICP-MS法测定土壤中的重金属含量[J].广东化工, 2016, 43(21):162-163.
[6]陈铸涛.土壤重金属含量测定中全自动石墨消解两种酸处理方法比较研究[J].资源节约与环保, 2017(7):77-79.
[7]HJ 832-2017土壤和沉积物金属元素总量的消解微波消解法[S]. 2017.
[8]苏淑坛,李天宝,易碧华,等.微波消解-ICP-AES法测定土壤中铅、砷、铬、镉和汞[J].福建分析测试, 2013, 22(5):45-48.
[9]袁静.微波消解-ICP-MS测定土壤和底泥中的12种金属元素[J].中国环境监测, 2012, 28(5):96-99.
[10]孙啸虎,王莉丽,杨喜宝,等. ICP-OES法测土壤中七种重金属含量[J].渤海大学学报, 2014, 35(2):187-190.
[11]耿广善,郑建明,艾明. ICP-AES测定土壤中的重金属[J].广州化工, 2011, 39(3):117-118, 137.
[12]秦青,李海霞,王俊伟,等. ICP-AES法测定土壤中铜、钒、镍和铬[J].四川环境, 2008, 27(5):16-18.
[13]GB/T 17139-1997土壤质量镍的测定火焰原子吸收分光光度法[S]. 1997.
[14]叶少媚,李云松,杨秋菊,等.全自动石墨消解-连续光源原子吸收光谱法顺序测定土壤中9种金属元素[J].现代农业科技, 2016(10):161-162, 165.
[15]HJ 168-2010环境监测分析方法标准制修订技术到则[S]. 2010.
[16]鲁静,付凌燕,王旭.质量分析方法验证中检出限和定量限测定方法探讨[J].中国药品标准, 2012, 13(1):33-35.
[17]田强兵.分析化学中检出限和测定下限的探讨[J].化学分析计量, 2007, 16(3):72-73.
[2]梁凤玲,章雪明,黄芳,等.电热板消解-ICP-MS法测定耕地土壤中6种重金属元素[J].现代农业科技, 2018(5):183-184.
[3]GB/T 17138-1997土壤质量铜、锌的测定火焰原子吸收分光光度法[S]. 1997.
[4]王东,胡珊.全自动石墨消解电感耦合等离子质谱法测定土壤中的重金属[J].中国资源综合利用, 2018, 36(4):27-28, 37.
[5]李承.全自动石墨消解-ICP-MS法测定土壤中的重金属含量[J].广东化工, 2016, 43(21):162-163.
[6]陈铸涛.土壤重金属含量测定中全自动石墨消解两种酸处理方法比较研究[J].资源节约与环保, 2017(7):77-79.
[7]HJ 832-2017土壤和沉积物金属元素总量的消解微波消解法[S]. 2017.
[8]苏淑坛,李天宝,易碧华,等.微波消解-ICP-AES法测定土壤中铅、砷、铬、镉和汞[J].福建分析测试, 2013, 22(5):45-48.
[9]袁静.微波消解-ICP-MS测定土壤和底泥中的12种金属元素[J].中国环境监测, 2012, 28(5):96-99.
[10]孙啸虎,王莉丽,杨喜宝,等. ICP-OES法测土壤中七种重金属含量[J].渤海大学学报, 2014, 35(2):187-190.
[11]耿广善,郑建明,艾明. ICP-AES测定土壤中的重金属[J].广州化工, 2011, 39(3):117-118, 137.
[12]秦青,李海霞,王俊伟,等. ICP-AES法测定土壤中铜、钒、镍和铬[J].四川环境, 2008, 27(5):16-18.
[13]GB/T 17139-1997土壤质量镍的测定火焰原子吸收分光光度法[S]. 1997.
[14]叶少媚,李云松,杨秋菊,等.全自动石墨消解-连续光源原子吸收光谱法顺序测定土壤中9种金属元素[J].现代农业科技, 2016(10):161-162, 165.
[15]HJ 168-2010环境监测分析方法标准制修订技术到则[S]. 2010.
[16]鲁静,付凌燕,王旭.质量分析方法验证中检出限和定量限测定方法探讨[J].中国药品标准, 2012, 13(1):33-35.
[17]田强兵.分析化学中检出限和测定下限的探讨[J].化学分析计量, 2007, 16(3):72-73.