氧弹燃烧-离子色谱法测定婴儿配方奶粉中的氯
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摘要
建立采用氧弹燃烧-离子色谱法测定婴儿配方奶粉中的氯含量的条件及方法。以氧弹对婴儿配方奶粉试样进行燃烧,10 mmol/L NaOH为吸收液进行吸收,以Dionex IonPac AS 11-HC柱,KOH梯度淋洗,流速为1.0 mL/min。经离子色谱分离测定婴儿配方奶粉中的氯的含量。氯离子的方法检出限为13.2μg/L。利用该方法对婴儿配方奶粉中的氯进行测定,线性相关系数为0.999 9,平均回收率为91.0%～95.5%,相对标准偏差为1.9%～3.5%。
The determination method of chlorine in infant formula milk powder by oxygen bomb comustion-ion chromatography and 10 mmol/L NaOH as the absorption solution was investigated.All species were separated at Dionex IonPac AS 11-HC column with mobile phase of KOH at a flow-rate of 1.0 mL/min. The detection limit of chloridion was 13.2 μg/L. The proposed method was used to determinate the chlorine in infant formula milk powder samples,the correlation coefficient was 0.999 9,the recoveries of the anions were in the range of 91.0 %-95.5 %,the relative standard deviations of chlorine were 1.9 %-3.5 %.
The determination method of chlorine in infant formula milk powder by oxygen bomb comustion-ion chromatography and 10 mmol/L NaOH as the absorption solution was investigated.All species were separated at Dionex IonPac AS 11-HC column with mobile phase of KOH at a flow-rate of 1.0 mL/min. The detection limit of chloridion was 13.2 μg/L. The proposed method was used to determinate the chlorine in infant formula milk powder samples,the correlation coefficient was 0.999 9,the recoveries of the anions were in the range of 91.0 %-95.5 %,the relative standard deviations of chlorine were 1.9 %-3.5 %.
引文
[1]中华人民共和国卫生部.食品安全国家标准婴儿配方食品:GB10765-2010[S].北京:中国标准出版社,2010:4
[2]范玉兰,卢映琼,薛珺,等.自动电位滴定法用于柑桔叶片氯含量测定的研究[J].中国南方果树,2014,43(4):76-78
[3]尹凤芝,胡冬梅,杨玉霞.生鲜牛乳中氯化物的测定[J].生命科学仪器,2011,9(2):62-64
[4]唐彩霞,唐丽素.离子选择电报法测定骨胶中氯离子的含量[J].当代教育理论与实践,1995(6):87-89
[5]史晓梅,杨永坛,杨悠悠,等.离子色谱法测定食用油中总氯方法的研究[J].中国粮油学报,2018(3):100-103
[6]韩晓.流动注射在线预富集-离子色谱法同时测定饮用水中痕量I-、SCN-、ClO4-及草甘膦[J].临床医学研究与实践,2018(1):4-6
[7]王瑞敏.微波消解-原子吸收光谱法间接测定生物样品中的氯离子[J].光谱实验室,2011,28(4):1966-1968
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[9]张维.离子色谱法在公共卫生检测中的新进展[J].中国卫生监督杂志,2012,19(1):44-49
[10]屈晶.离子色谱法在食品分析中的应用研究[D].重庆:西南大学,2010
[2]范玉兰,卢映琼,薛珺,等.自动电位滴定法用于柑桔叶片氯含量测定的研究[J].中国南方果树,2014,43(4):76-78
[3]尹凤芝,胡冬梅,杨玉霞.生鲜牛乳中氯化物的测定[J].生命科学仪器,2011,9(2):62-64
[4]唐彩霞,唐丽素.离子选择电报法测定骨胶中氯离子的含量[J].当代教育理论与实践,1995(6):87-89
[5]史晓梅,杨永坛,杨悠悠,等.离子色谱法测定食用油中总氯方法的研究[J].中国粮油学报,2018(3):100-103
[6]韩晓.流动注射在线预富集-离子色谱法同时测定饮用水中痕量I-、SCN-、ClO4-及草甘膦[J].临床医学研究与实践,2018(1):4-6
[7]王瑞敏.微波消解-原子吸收光谱法间接测定生物样品中的氯离子[J].光谱实验室,2011,28(4):1966-1968
[8]何涛,赵茜茜,王振,等.电感耦合等离子体发射光谱法测定矿泉水中氯[J].中国卫生检验杂志,2016(20):2911-2912
[9]张维.离子色谱法在公共卫生检测中的新进展[J].中国卫生监督杂志,2012,19(1):44-49
[10]屈晶.离子色谱法在食品分析中的应用研究[D].重庆:西南大学,2010