ISO 6560:1983 水果和蔬菜制品.苯甲酸含量（其大于 200mg/l或200mg/kg的含量）的测定.分子吸收光谱测定法

标准编号：ISO 6560:1983

中文名称：水果和蔬菜制品.苯甲酸含量（其大于 200mg/l或200mg/kg的含量）的测定.分子吸收光谱测定法

英文名称：Fruit and vegetable products — Determination of benzoic acid content (benzoic acid contents greater than 200 mg per litre or per kilogram) — Molecular absorption spectrometric method

发布日期：1983-11

标准范围

该方法包括使用乙醚从酸化的试验部分中提取酸，然后进行硝化，然后进行还原和用羟胺盐酸盐改性的莫勒反应，用合适的光谱仪测量红色络合物的吸光度。有关测定较低浓度的信息，请参见ISO 5518。

The method consists in extracting the acid from an acidified test portion using diethyl ether, nitrating followed by reduction and Mohler's reaction modified with hydroxylaminehydrochloride, measuring the absorbance of the red complex obtained with a suitable spectrometer. For determining lower concentrations, see ISO 5518.

标准预览图