火焰原子吸收法测定镍的优选测定介质研究
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摘要
对现行原子吸收法测定水中镍的标准方法(水质镍的测定火焰原子吸收分光光度法)中由背景干扰引起的测定误差问题,进行了深入的研究和探讨。结果表明,用盐酸介质体系代替原有的硝酸介质体系,检出限为0. 084 mg/L,测定下限为0. 34 mg/L,测定范围为0. 34～5. 0 mg/L,降低了测定下限,提高了测定灵敏度。方法的精密度和准确度符合技术要求,适合于水体中镍元素污染指标的监测,以及其他化学检测实验室对水中镍元素含量的相关测定。
The FAAS,a current standard atomic absorption method for the determination of nickel in water,is improved. Regarding the measurement error caused by the background interference in the method,more in-depth research is conducted. The results show that the suitable hydrochloric acid medium system is selected to replace the original nitric acid medium system,the detection limit is 0. 084 mg/L,the lower determination limit is 0. 34 mg/L,and the determination range is 0. 34 ～ 5. 0 mg/L,the lower determination limit is lowered,and the determination sensitivity is improved. The test results show that the accuracy of the method can meet the technical requirements,which is suitable for monitoring the pollution indicators of nickel in water and determining the content of nickel in water in the chemical testing laboratories.
The FAAS,a current standard atomic absorption method for the determination of nickel in water,is improved. Regarding the measurement error caused by the background interference in the method,more in-depth research is conducted. The results show that the suitable hydrochloric acid medium system is selected to replace the original nitric acid medium system,the detection limit is 0. 084 mg/L,the lower determination limit is 0. 34 mg/L,and the determination range is 0. 34 ～ 5. 0 mg/L,the lower determination limit is lowered,and the determination sensitivity is improved. The test results show that the accuracy of the method can meet the technical requirements,which is suitable for monitoring the pollution indicators of nickel in water and determining the content of nickel in water in the chemical testing laboratories.
引文
[1]国家环境保护局. GB/T 11912—1989水质镍的测定火焰原子吸收分光光度法[S].北京:中国标准出版社,1989.
[2]彭鹏,石慧,耿建梅.火焰原子吸收分光光度法测定水中铜的改进[J].污染防治技术,2017,30(4):84-86.
[3]刘正丹,徐云斌,曹美龄,等.磷酸氢铈纳米吸附剂预富集-火焰原子吸收法测定水中痕量铅[J].现代预防医学,2016,43(3):530-533,541.
[4]张利敏,程浩川,万豆豆,等.二硫代乙二酰胺改性硅胶固相萃取-火焰原子吸收光谱法测定水中的痕量铜和铅[J].理化检验(化学分册),2015,51(10):1400-1405.
[5]卞战强,樊伟,田向红,等.氧化石墨烯/麦饭石分离富集-火焰原子吸收法测定水中镉[J].分析科学学报,2013,29(4):535-538.
[6]武洪丽,鲜青龙,王琴.火焰原子吸收法测定水中镁元素含量的不确定度评定[J].环境卫生学杂志,2014,4(2):195-199.
[7]冒爱荣,许琦,李红波,等.淀粉黄原酸酯富集-火焰原子吸收光谱法测定水中痕量铜[J].理化检验(化学分册),2012,48(8):987-988.
[8]王良,李清,闫永胜,等.离子液体[Bmim]PF6萃取-火焰原子吸收法测定水中痕量镉[J].分析化学,2011,39(11):1776-1777.
[9]赵永强,朱秀娟,刘志高,等.流动注射在线分离富集-火焰原子吸收光谱法测定水中镍(Ⅱ)[J].理化检验(化学分册),2015,51(6):787-789.
[10]崔世勇,陈洁,翁少梅.共沉淀火焰原子吸收法测定水中镉锰镍铅含量[J].上海预防医学杂志,2009,21(6):305-307.
[11]国家质量检验检疫总局,国家标准化管理委员会.GB/T 27404—2008实验室质量控制规范食品理化检测[S].北京:中国标准出版社,2008.
[12]环境保护部. HJ 168—2010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,2010.
[2]彭鹏,石慧,耿建梅.火焰原子吸收分光光度法测定水中铜的改进[J].污染防治技术,2017,30(4):84-86.
[3]刘正丹,徐云斌,曹美龄,等.磷酸氢铈纳米吸附剂预富集-火焰原子吸收法测定水中痕量铅[J].现代预防医学,2016,43(3):530-533,541.
[4]张利敏,程浩川,万豆豆,等.二硫代乙二酰胺改性硅胶固相萃取-火焰原子吸收光谱法测定水中的痕量铜和铅[J].理化检验(化学分册),2015,51(10):1400-1405.
[5]卞战强,樊伟,田向红,等.氧化石墨烯/麦饭石分离富集-火焰原子吸收法测定水中镉[J].分析科学学报,2013,29(4):535-538.
[6]武洪丽,鲜青龙,王琴.火焰原子吸收法测定水中镁元素含量的不确定度评定[J].环境卫生学杂志,2014,4(2):195-199.
[7]冒爱荣,许琦,李红波,等.淀粉黄原酸酯富集-火焰原子吸收光谱法测定水中痕量铜[J].理化检验(化学分册),2012,48(8):987-988.
[8]王良,李清,闫永胜,等.离子液体[Bmim]PF6萃取-火焰原子吸收法测定水中痕量镉[J].分析化学,2011,39(11):1776-1777.
[9]赵永强,朱秀娟,刘志高,等.流动注射在线分离富集-火焰原子吸收光谱法测定水中镍(Ⅱ)[J].理化检验(化学分册),2015,51(6):787-789.
[10]崔世勇,陈洁,翁少梅.共沉淀火焰原子吸收法测定水中镉锰镍铅含量[J].上海预防医学杂志,2009,21(6):305-307.
[11]国家质量检验检疫总局,国家标准化管理委员会.GB/T 27404—2008实验室质量控制规范食品理化检测[S].北京:中国标准出版社,2008.
[12]环境保护部. HJ 168—2010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,2010.