标准摘要
[中文适用范围]： 该方法包括使用乙醚从酸化的测试部分中提取酸，硝化，然后还原，并用盐酸羟胺改进莫勒反应，用合适的光谱仪测量获得的红色络合物的吸光度。 如需确定较低浓度，请参阅 ISO 5518。 [外文原描述]： 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.
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