ISO 5523-1981 液态水果和蔬菜制品 二氧化硫含量的测定(常规法)

标准号：ISO 5523-1981
中文标准名称：液态水果和蔬菜制品 二氧化硫含量的测定(常规法)
英文标准名称：Liquid fruit and vegetable products; Determination of sulphur dioxide content (Routine method)
标准类型：B30;X76
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：B30;X76
国际标准分类号：67.080.01
适用范围：The determination of free sulphur dioxide consists in direkt iodometric titration of the product at a pH between 0,7 and 1, followed by blank titration of the product, freed from sulphur dioxide by boiling under reflux or by binding its free sulphur dioxide content with an exess of acetaldehyde or propioaldehyde. The bond sulphur dioxide is determined after titration of free compound, rendering of the produkt alkaline and titration of the sulphur dioxideliberated by hydrolysis with iodine in an acid medium.