离子液体-石墨炉原子吸收光谱法测定食品中铬的研究

doi:10.14088/j.cnki.issn0439-8114.2020.17.036

湖北农业科学 ›› 2020, Vol. 59 ›› Issue (17): 158-160.doi: 10.14088/j.cnki.issn0439-8114.2020.17.036

离子液体-石墨炉原子吸收光谱法测定食品中铬的研究

凌约涛^1,2, 潘瑞花¹, 王遥雪¹, 王帆¹, 郭少飞¹, 张霖¹, 赵礼阳¹, 邢钧²

1.武汉海关技术中心,武汉 430050;
2.武汉大学化学与分子科学学院/生物医学分析化学教育部重点实验室,武汉 430072

收稿日期:2019-10-29 发布日期:2020-10-23
作者简介:凌约涛（1983-）,男,湖北麻城人,高级工程师,主要从事食品检测工作,（电话）027-58906095（电子信箱）lingyt2006@163.com。
基金资助:
海关总署科研项目（2017IK244）

Determination of chromium in food by ionic liquid-graphite furnace atomic absorption spectrometry

LING Yue-tao^1,2, PAN Rui-hua¹, WANG Yao-xue¹, WANG Fan¹, GUO Shao-fei¹, ZHANG Lin¹, ZHAO Li-yang¹, XING Jun²

1. Technology Center of Wuhan Customs District P.R.China, Wuhan 430050,China;
2. Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education/College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072,China

Received:2019-10-29 Published:2020-10-23

摘要/Abstract

摘要： 建立了离子液体前处理样品、石墨炉原子吸收光谱法测定食品中铬的方法。以亲水性离子液体1-丁基-3-甲基咪唑氯盐（[Bmim]-Cl）直接溶解样品,加入0.5 mL浓硝酸,5 min内即可完成前处理过程,样液直接用石墨炉原子吸收光谱法进行检测。结果表明,铬在2.58~20.64 μg/L线性关系良好,在优化的光谱条件下,铬检出限为0.04 mg/kg,加标回收率在92.00%~101.65%,RSD为4.11%~6.69%。该前处理方法绿色安全、操作简便、处理速度快,具有广泛的应用前景。

关键词: 亲水性离子液体, 1-丁基-3-甲基咪唑氯盐, 石墨炉原子吸收光谱法, 铬

Abstract: A method for the determination of chromium in food by ionic liquid -graphite furnace atomic absorption spectrometry was established. The sample was directly dissolved in 1-butyl-3-methylimidazolium chloride （[Bmim]-Cl） and added with 0.5 mL nitric acid. The pretreatment process could be completed within 5 minutes. The solution was directly detected by graphite furnace atomic absorption spectrometry. Chromium has a good linear relationship in the range of 2.58~20.64 μg/L, under the optimized spectral conditions, the detection limit of chromium is 0.04 mg/kg, the recovery of standard addition is 92.00%~101.65%, RSD is 4.11%~6.69%. The pretreatment method is green and safe, easy to operate and fast to process, and has a wide application prospect.

Key words: hydrophilic ionic liquid, 1-butyl-3-methylimidazolium chloride, graphite furnace atomic absorption spectrometry, chromium

中图分类号:

O657.31

凌约涛, 潘瑞花, 王遥雪, 王帆, 郭少飞, 张霖, 赵礼阳, 邢钧. 离子液体-石墨炉原子吸收光谱法测定食品中铬的研究[J]. 湖北农业科学, 2020, 59(17): 158-160.

LING Yue-tao, PAN Rui-hua, WANG Yao-xue, WANG Fan, GUO Shao-fei, ZHANG Lin, ZHAO Li-yang, XING Jun. Determination of chromium in food by ionic liquid-graphite furnace atomic absorption spectrometry[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(17): 158-160.

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离子液体-石墨炉原子吸收光谱法测定食品中铬的研究

Determination of chromium in food by ionic liquid-graphite furnace atomic absorption spectrometry

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