食品科学 ›› 2013, Vol. 34 ›› Issue (22): 213-218.doi: 10.7506/spkx1002-6630-201322043

• 分析检测 • 上一篇    下一篇

充氮蒸馏-盐酸副玫瑰苯胺比色法测定蔬菜及其制品中的亚硫酸盐

方长云,段彬伍,孙成效,卢 林,何小嫣   

  1. 中国水稻研究所,农业部稻米及制品质量监督检验测试中心,浙江 杭州 310006
  • 收稿日期:2013-04-24 修回日期:2013-10-09 出版日期:2013-11-25 发布日期:2013-12-05
  • 通讯作者: 段彬伍 E-mail:duanbw@sina.com

Determination of Sulfite in Vegetables and Derived Products by Nitrogen Distillation-Pararosaniline Hydrochloride Spectrophotometric Method

FANG Chang-yun,DUAN Bin-wu,SUN Cheng-xiao,LU Lin,HE Xiao-yan   

  1. Rice Product Quality Supervision and Inspection Center, Ministry of Agriculture, China National Rice Research Institute,Hangzhou 310006, China
  • Received:2013-04-24 Revised:2013-10-09 Online:2013-11-25 Published:2013-12-05

摘要:

采用改良充氮蒸馏法提取、甲醛溶液吸收-盐酸副玫瑰苯胺比色测定蔬菜及其制品中的亚硫酸盐含量。结果表明:当称样量为5.00g时,该方法最小检出量为0.5mg/kg,亚硫酸盐含量在0~10μg范围内与吸光度呈良好的线性关系(R2=0.9998);方法精密度为0.75%~3.78%,平均回收率为89.8%~98.3%。该方法具有可排除颜色干扰、减少有毒试剂的使用和对环境的污染等优点,且方法操作简便、重复性好,符合检测蔬菜及其制品的需求。

关键词: 盐酸副玫瑰苯胺, 蔬菜及其制品, 亚硫酸盐, 最小检出量, 精密度

Abstract:

A nitrogen distillation-formaldehyde solution absorption-pararosaniline hydrochloride spectrophotometric
method for the determination of sulfite in vegetables and derived products was developed. The results showed that the
detection limit for sulfite was 0.5 mg/kg in 5.0 g of samples. This method had a good linearity (R2 = 0.9998) for sulfur
dioxide with a concentration ranging from 0 to 10 mg. The relative standard deviation of the proposed method ranged from
0.75% to 3.78%. The recovery rate was in the range of 89.8% ~ 98.3%. The developed method has less color interference
from samples and less pollution. It is easy and simple with good repeatability, which is suitable for the determination of
sulfite in vegetables and derived products.

Key words: nitrogen distillation, vegetables and derived products, sulfite, limit, relative standard deviation

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