Consistency evaluation between graphite furnace atomic absorption spectrometry and inductively coupled plasma mass spectrometry based on the proficiency testing results of cadmium in soil
NING Yuanying, XING Xiaoru, ZUO Zehao, SUN Zijie, LIU Tao*
Institute of Environmental Reference Materials,Environmental Development Center of the Ministry of Ecology and Environment,State Environmental Protection Key Laboratory of Environmental Pollutant Metrology and Reference Materials,Beijing 100029,China
Abstract：The consistency between graphite furnace atomic absorption spectrometry(GF-AAS) and inductively coupled plasma mass spectrometry(ICP-MS) was evaluated by robust standard error “F-test” and robust average value “t-test” based on the proficiency testing results of cadmium in soil. According to the different digestion methods, the statistical results of cadmium in soil by GF-AAS and ICP-MS were compared. The consistency of precision between GF-AAS and ICP-MS was evaluated using robust standard error “F-test”. The results showed that the precision of ICP-MS had no significant difference with GF-AAS or even better than GF-AAS. During the consistency evaluation of the precision of methods, it could not completely reference the mathematical statistics results of “F-test”, and the precision data in standard analysis method should be combined to evaluate the consistency. The robust average value “t-test” and the robust average value paired sample “t-test” were employed to evaluate the consistency of determination results between the two methods. It was found that there was no significant difference between the robust average values of cadmium in soil by GF-AAS and ICP-MS when the digestion mode was same. The study provided a new way to judge the consistency of different methods based on proficiency testing results.
宁远英, 邢小茹, 左泽浩, 孙自杰, 刘涛. 利用土壤中镉能力验证结果评价石墨炉原子吸收光谱法与电感耦合等离子体质谱法的一致性[J]. 冶金分析, 2023, 43(10): 47-53.
NING Yuanying, XING Xiaoru, ZUO Zehao, SUN Zijie, LIU Tao. Consistency evaluation between graphite furnace atomic absorption spectrometry and inductively coupled plasma mass spectrometry based on the proficiency testing results of cadmium in soil. , 2023, 43(10): 47-53.
[1] 邢小茹,刘涛,李帅,等.污染土壤重金属检测标准样品在能力验证工作中的应用研究[J].中国环境监测,2019,35(3):53-58. XING Xiaoru,LIU Tao,LI Shuai,et al.Application of heavy metals polluted soil CRM in proficiency testing[J].Environmental Monitoring in China,2019,35(3):53-58. [2] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 27043—2012 合格评定 能力验证通用要求[S].北京:中国标准出版社,2012. [3] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 6379.6—2009 测量方法与结果的准确度(正确度与精密度) 第6部分:准确度值的实际应用[S].北京:中国标准出版社,2009. [4] 生态环境部.HJ 168—2020 环境监测 分析方法标准制修订技术导则[S].北京:中国环境出版社,2020. [5] 李冠龙,覃涛,王光普,等.煤炭常规分析中不同检测方法的等效性评价[J].煤质技术,2017(5):22-26. LI Guanlong,QIN Tao,WANG Guangpu,et al.Evaluation of the equivalence of different detection methods in coal conventional analysis[J].Coal Quality Technology,2017(5):22-26. [6] 刘崇华,丁志勇,王忠,等.能力验证检测方法的技术等效性分析及应用[J].理化检验(化学分册)(Physical Testing and Chemical Analysis Part B:Chemical Analysis),2020,56(12):1299-1302. [7] 蒋晓光,赵军锋,赵旭东,等.铜磁铁矿中铜含量分析方法精密度的比较[J].中国无机分析化学,2017,7(1):28-31. JIANG Xiaoguang,ZHAO Junfeng,ZHAO Xudong,et al.Comparison of methods precision for determination of copper content in copper magnetite[J].Chinese Journal of Inorganic Analytical Chemistry,2017,7(1):28-31. [8] 张百慧,郭超,范爽,等.分析方法标准验证实验中不同方法结果间一致性判据研究[J].冶金分析,2021,41(5):18-27. ZHANG Baihui,GUO Chao,FAN Shuang,et al.Study on consistency criterion between the results of different analytical methods in standard verification experiments[J].Metallurgical Analysis,2021,41(5):18-27. [9] 闫岩,殷惠民,董树屏,等.实验室土壤质控样品重金属测试结果允许相对误差判据研究[J].冶金分析,2019,39(4):7-14. YAN Yan,YIN Huimin,DONG Shuping,et al.Study on allowable relative error criteria for heavy metal in laboratory soil quality control sample[J].Metallurgical Analysis,2019,39(4):7-14. [10] 胡昊.不同分析标准测试土壤铅镉结果比较[J].福建分析测试,2020,29(1):36-39. HU Hao.Comparison of different analytical methods for testing lead and cadmium in soil[J].Fujian Analysis & Testing,2020,29(1):36-39. [11] 季天委,汪玉磊,钟杭,等.国标法与电感耦合等离子体质谱法测定土壤铜铬铅镉含量结果对比[J].浙江农业科学(Journal of Zhejiang Agricultural Sciences),2020,61(5):1031-1033.
