市售面食中甲醛次硫酸氢钠的含量测定

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英文篇名：Determination of Sodium Formaldehyde Sulfoxylate in Commercial Wheaten Food 作者：龚建康 ; 左安臣 ; 叶坪 ; 余平莲 英文作者：Gong Jiankang;Zuo Anchen;Ye Ping;Yu Pinglian;School of Chemistry and Chemical Engineering, Zhaotong University; 关键词：甲醛次硫酸氢钠 ; 面食 ; 乙酰丙酮 英文关键词：sodium formaldehyde sulfoxylate;;wheaten food;;acetylacetone 中文刊名：GDHG 英文刊名：Guangdong Chemical Industry 机构：昭通学院化学化工学院; 出版日期：2019-02-28 出版单位：广东化工 年：2019 期：v.46;No.390 基金：昭通学院校级科研项目基金(No:2018xj12) 语种：中文; 页：GDHG201904076 页数：3 CN：04 ISSN：44-1238/TQ 分类号：161-163

摘要

通过乙酰丙酮法测定昭通市昭阳区市售11种常见面食中甲醛的含量,通过公式间接计算出各面食中甲醛次硫酸氢钠(吊白块)的残留量,测得各样品的甲醛值在0.0120μg/g～0.1628μg/g之间,甲醛次硫酸氢钠的含量在1.6465 mg/kg～8.3564 mg/kg范围,且这些含量都国家规定值(10 mg/kg)以下,检测结果判定为吊白块未检出。所测定结果的RSD在0.14%～0.81%之间和甲醛加标回收率范围在91.54%～97.26%,说明本实验所采取的乙酰丙酮法具有精密度好,准确度高的特点,测定结果可靠。
        The formaldehyde content of the 11 kinds of commercial wheaten food samples was determined by acetylacetone spectrophotometry in Zhaoyang district of Zhaotong city. These formaldehyde sodium sulfoxylate content was indirectly calculated based on the formulae. The wheaten food samples examination shows that the lowest formaldehyde content was 0.0120 μ g/g, and the highest was 0.1628 μ g/g, and the sodium formaldehyde sulfoxylate of the samples in content range 1.6465 mg/kg to 8.3564 mg/kg, they were lower than defined value by the state(10 mg/kg). The sodium formaldehyde sulfoxylate in these food were not detectable.The relative standard deviation of the formaldehyde determination results were 0.14 %～0.81 % and recoveries were 91.54 %～97.26 %. It was accurate and reliable to get the experimental results by the experimental method and steel with high accuracy and precision.

引文

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