| 在线渗析-离子色谱联用同时测定熟肉制品中的亚硝酸盐和硝酸盐 |
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| 引用本文： | 姚敬,杭义萍,钟志雄,陈明,李敏. 在线渗析-离子色谱联用同时测定熟肉制品中的亚硝酸盐和硝酸盐[J]. 食品科学, 2010, 31(2): 187-190. DOI: 10.7506/spkx1002-6300-201002048 |
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| 作者姓名： | 姚敬 杭义萍 钟志雄 陈明 李敏 |
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| 作者单位： | 1.华南理工大学化学与化工学院 2.广东省疾病预防控制中心 |
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| 摘 要： | 采用在线渗析技术与离子色谱法联用测定熟肉制品中的亚硝酸盐和硝酸盐。样品经纯水振荡、超声提取后，离心所得的上清液过Ag 柱经在线渗析后进入分离柱，采用Metrosep A Supp 4 阴离子交换柱，以1.8mmol/LNa2CO3 溶液与1.7mmol/L NaHCO3 溶液作为淋洗液，用化学抑制型电导检测器检测。方法中NO2 和 NO3 的检出限为0.004mg/L 和0.005mg/L，样品加标回收率在88%～105% 之间。该法快速、灵敏、准确，高效自动化，可同时测定熟肉制品中的亚硝酸盐和硝酸盐含量。
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| 关 键 词： | 离子色谱法 渗析 熟肉制品 亚硝酸盐 硝酸盐 |
| 收稿时间： | 2009-03-25 |
Simultaneous Determination of Nitrite and Nitrate in Cooked Meat by On-line Dialysis-ion Chromatography |
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| YAO Jing,,HANG Yi-ping,ZHONG Zhi-xiong,CHEN Ming,LI Min. Simultaneous Determination of Nitrite and Nitrate in Cooked Meat by On-line Dialysis-ion Chromatography[J]. Food Science, 2010, 31(2): 187-190. DOI: 10.7506/spkx1002-6300-201002048 |
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| Authors: | YAO Jing HANG Yi-ping ZHONG Zhi-xiong CHEN Ming LI Min |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China；2. Center for Disease Control and Prevention of Guangdong Province, Guangzhou 510300, China |
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| Abstract: | A new method based on the combination of on-line dialysis and ion chromatography was established for measuring nitrite and nitrate in cooked meat. Samples were suspended in water, extracted in ultrasonic bath and centrifuged. The resulted supernatant was then subjected to on-line treatment with dialysis before being injected into Ag column. Nitrite and nitrate were separated on a Metrosep A Supp 4 anion exchange column using an eluent composed of a mixed aqueous solution of 1.8 mmol/L Na2CO3 and 1.7 mmol/L ... |
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| Keywords: | ion chromatography dialysis cooked meat nitrite nitrate |
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