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气相分子吸收光谱法测定酱腌菜中亚硝酸盐
引用本文:徐 晓,郝桂娟,郭利攀,邢丽丽,宋 婷.气相分子吸收光谱法测定酱腌菜中亚硝酸盐[J].食品安全质量检测技术,2020,11(15):5252-5257.
作者姓名:徐 晓  郝桂娟  郭利攀  邢丽丽  宋 婷
作者单位:绿城农科检测技术有限公司,绿城农科检测技术有限公司,绿城农科检测技术有限公司,绿城农科检测技术有限公司,绿城农科检测技术有限公司
摘    要:目的建立了一种气相分子吸收光谱法测定酱腌菜中亚硝酸盐的方法。方法酱腌菜中的亚硝酸盐用沸水浴浸提,浸提液沉淀蛋白质后定容并过滤,以柠檬酸-乙醇溶液作为还原剂,用气相分子吸收光谱测定滤液中亚硝酸盐的含量。结果亚硝酸盐在0.1~1.0 mg/L浓度范围内有良好的线性关系,相关系数大于0.999,检出限为0.6mg/kg,定量限为1.8mg/kg,加标回收率为81.3%~99.8%,相对标准偏差(relativestandard deviation, RSD)小于4.7%。结论该方法简便、快捷、有效,结果稳定性高,可用于酱腌菜中亚硝酸盐的检测。

关 键 词:气相分子吸收光谱    亚硝酸盐    酱腌菜
收稿时间:2020/6/22 0:00:00
修稿时间:2020/7/12 0:00:00

Determination of nitrite in pickles by gas-phase molecular absorption spectroscopy
XU Xiao,HAO Gui-Juan,GUO Li-Pan,XING Li-Li,SONG Ting.Determination of nitrite in pickles by gas-phase molecular absorption spectroscopy[J].Food Safety and Quality Detection Technology,2020,11(15):5252-5257.
Authors:XU Xiao  HAO Gui-Juan  GUO Li-Pan  XING Li-Li  SONG Ting
Affiliation:Greentown Agricultural Testing Technology Co., Ltd,Greentown Agricultural Testing Technology Co., Ltd,Greentown Agricultural Testing Technology Co., Ltd,Greentown Agricultural Testing Technology Co., Ltd,Greentown Agricultural Testing Technology Co., Ltd
Abstract:Objective To establish a method for determination of nitrite in pickles by gas-phase molecular absorption spectroscopy. Methods The nitrite in pickled vegetables was extracted with a boiling water bath. After the protein was precipitated in the extract, the volume was fixed and filtered. Using citric acid ethanol solution as the reducing agent, determine the concentration of nitrite in filtrate by gas-phase molecular absorption spectroscopy. Results Nitrite had a good linear relationship in the range of 0.1~1.0mg/L, with r>0.999, the limit of detection was 0.6 mg/kg, the limit of quantification was 1.8 mg/kg, the recoveries were 80.0%-101%, and the relative standard deviation (RSD) was less than 6.0%. Conclusion This method is simple, rapid and accuratee, which is suitable for the determination of nitrite in pickles.
Keywords:gas-phase molecular absorption spectroscopy  nitrite  pickles
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