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当前位置: 首页 > 文章 > 乙二胺四乙酸二钠-盐酸副玫瑰苯胺检测干果中二氧化硫的方法研究 食品科学 2009,30 (8) 247-250
Position: Home > Articles > Determination of Sulfur Dioxide in Nut Fruits by EDTA-2Na Solution Sampling-Pararosaniline Hydrochloride Spectrophotometric Method FOOD SCIENCE 2009,30 (8) 247-250

乙二胺四乙酸二钠-盐酸副玫瑰苯胺检测干果中二氧化硫的方法研究

作  者：
郭振忠;胡云峰;李文生;冯晓元;王宝刚;王纪华
单  位：
北京农产品质量检测与农田环境监测技术研究中心;天津科技大学食品工程与生物技术学院;北京市农林科学院林业果树研究所
关键词：
亚硫酸盐;二氧化硫;盐酸副玫瑰苯胺;乙二胺四乙酸二钠;干果
摘  要：
本研究对盐酸副玫瑰苯胺法测定食品中SO2进行改进,以EDTA-2Na代替剧毒试剂四氯汞钠,建立了超声波浸提、无汞盐吸收液检测干果SO2残留的方法,二氧化硫含量在0～10.0μg范围内与吸光度呈良好的线性关系(R2=0.9995),方法的检出限为0.8mg/kg。测定样品的相对标准偏差在3.29%～7.42%之间,回收率在89.17%～104.72%之间。该方法操作简便、重现性好、线性范围宽、减小了对环境的污染,可用于干果中亚硫酸盐的测定。
译  名：
Determination of Sulfur Dioxide in Nut Fruits by EDTA-2Na Solution Sampling-Pararosaniline Hydrochloride Spectrophotometric Method
作  者：
GUO Zhen-zhong1,2,HU Yun-feng1,LI Wen-sheng2,FENG Xiao-yuan2,3,,WANG Bao-gang2,WANG Ji-hua3(1.College of Food Engineering and Biotechnology,Tianjin University of Science and Technology,Tianjin 300457,China;2.Institute of Forestry and Pomology,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100093,China;3.Beijing Research Center for Agrifood Testing and Farmland Monitoring,Beijing 100097,China)
关键词：
sulfite;sulfur dioxide;pararosaniline hydrochloride;ethylenediamine tetraacetic acid disodium;nut fruits
摘  要：
A rapid determination method of sulfur dioxide(SO2) residues in nut fruits by an improved pararosaniline hydrochloride colorimetry combined with ultrasonic-assisted mercury-free reagent extraction was developed.In order to extract SO2 residues effectively from samples,accelerative ultrasonic extraction was performed in EDTA-2Na solution instead of Na2HgCl4 which has been widely used.This method has a good linearity(R2 = 0.9995)for the concentration of sulfur dioxide ranging from 0 to 10μg,and its detection limit is 0.8 mg/kg.The average spike recoveries of SO2 in different nut fruit samples are between 89.17% and 104.72% with the RSD of 3.29% to 7.42%.This method has good repeatability and causes less pollution.Therefore,it is suitable for the determination of sulfite in nut fruits.

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