IC Determination of Hexavalent Chromium in Air of Working Place
摘 要
采用离子色谱法测定工作场所空气中六价铬的含量。采用碱性微孔滤膜采集工作场所空气样品,经4.0 mmol·L-1碳酸钠溶液超声洗脱后,选用Metrosep A Supp 4-250型阴离子色谱柱(250 mm×4.0 mm)进行色谱分离。以4.0 mmol·L-1碳酸钠-1.0 mmol·L-1碳酸氢钠混合液为流动相,抑制型电导检测器测定。六价铬的质量浓度在0.01~10.0 mg·L-1内与其峰面积呈线性关系,方法的检出限(3S/N)为4×10-3mg·L-1。加标回收率在95.2%~97.6%之间,测定值的相对标准偏差(n=6)在2.2%~3.8%之间。
Abstract
IC was applied to the determination of hexavalent chromium in air of working place. Air sample of working place was collected by alkline microporous membrane filter, and the Cr(Ⅵ) on the filter was eluted ultrasonically with 4.0 mmol·L-1 Na2CO3 solution. Metrosep A Supp 4-250 anionic column (250 mm×4.0 mm) was used for chromatographic separation. Mixture of 4.0 mmol·L-1 Na2CO3 and 1.0 mmol·L-1 NaHCO3 solution was used as mobile phase, and restraining conductance detector was used in determination. Linear relationship between values of peak area and mass concentration of hexavalent chromium was kept in the range of 0.01-10.0 mg·L-1, with detection limit (3S/N) of the method of 4×10-3mg·L-1. Values of recovery found by standard addition method were in the range of 95.2%-97.6%, and values of RSD's (n=6) in the range of 2.2%-3.8%.
中图分类号 O657.7 DOI 10.11973/lhjy-hx201702009
所属栏目 工作简报
基金项目 国家安全生产监督管理总局2013年安全生产重大事故防治关键技术科技项目(shandong-096-2013AQ)
收稿日期 2016/2/22
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备注朱富强(1987-),男,山东临沂人,硕士研究生,主要从事理化检测工作。E-mail:zhufuqiang1987@163.com
引用该论文: ZHU Fu-qiang,LI Yue-hong,JIA Hui-mei,LI Meng-xing. IC Determination of Hexavalent Chromium in Air of Working Place[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2017, 53(2): 165~168
朱富强,李月红,贾会美,李梦醒. 离子色谱法测定工作场所空气中六价铬含量[J]. 理化检验-化学分册, 2017, 53(2): 165~168
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【4】ASATIANI N, ABULADZE M, KAETVELISHVILI T, et al. Response of antioxidant defense system to chromium(Ⅵ)-induced cytotoxicity in human diploid cells[J]. Biometals, 2010,23(1):161-172.
【5】SEIDLER A, JÄHNICHEN S, HEGEWALD J, et al. Systematic review and quantification of respiratory cancer risk for occupational exposure to hexavalent chromium[J]. Int Arch Occup Envion Health, 2013,86(8):943-955.
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【8】徐义邦,樊孝俊,龚娴.二苯碳酰二肼分光光度法测定水中六价铬方法的改进[J].中国给水排水, 2015,31(8):106-108.
【9】张涛,蔡五田,刘金巍,等.超声辅助提取/离子色谱法测定铬污染土壤中的六价铬[J].分析测试学报, 2013,32(11):1384-1387.
【10】赵云芝,谢永洪,杨坪,等.离子色谱法-光度检测天然水中铬(Ⅵ)[J].理化检验-化学分册, 2010,46(5):485-490.
【11】刀谞,王超,张霖琳,等.环境空气中六价铬的分析方法研究进展[J].环境化学, 2015,34(10):1875-1884.
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