ISO 5522:1981 水果、蔬菜及其制品.二氧化硫总含量的测定

标准编号：ISO 5522:1981

中文名称：水果、蔬菜及其制品.二氧化硫总含量的测定

英文名称：Fruits, vegetables and derived products — Determination of total sulphur dioxide content

发布日期：1981-09

标准范围

该方法包括酸化和加热试验部分，在氮气流中夹带释放的气体，通过使气体在中性稀释过氧化氢溶液中鼓泡吸收和氧化气体，然后使用标准体积氢氧化钠溶液测定由此形成的硫酸。附件A和B分别描述了测定结果的验证。

The method consists in acidifying and heating a test portion, entraining, in a current of nitrogen, the gas liberated, absorbing and oxidizing the gas by bubbling it through a neutral, dilute hydrogen peroxide solution, then determining the sulphuric acid thus formed using standard volumetric sodium hydroxide solution. Verification of the determination is described in the annexes A and B, respectively.

标准预览图