动植物油脂 GC/MS法检测和标识挥发性有机污染物

[中文适用范围]： 本标准规定了食用油中挥发性有机污染物的检测和鉴定方法。 适用于怀疑受污染的原油和精炼食用油中挥发性工业化学品的鉴定。 它还可以确定污染物的浓度。 本国际标准不适用于测定可能与食用油或其天然成分之一发生反应的化学物质的浓度。 在这些情况下，有时可以在定性的基础上确定污染物的存在。 此外，本国际标准不适用于非挥发性化学品。 该方法已被证明适用于鉴定以下化合物类别： ——饱和卤代烃； ——不饱和卤代烃； ——酯类；醛类；醇类；胺类；酮类；醚类； ——环状和芳香族化合物； ——氮化合物； ——丙烯酸酯；等。 该方法已针对 1 mg/kg 至 10 mg/kg 范围内的浓度进行了评估。 [外文原描述]： This International Standard specifies a method for the detection and identification of a volatile organic contaminant in edible oils. It is applicable to the identification of volatile industrial chemicals in both crude and refined edible oils that are suspected of being contaminated. It also enables determination of the concentration of the contaminant. This International Standard is not applicable to the determination of the concentration of chemicals that may react with the edible oil or with one of its natural components. In these cases, the presence of the contaminant may sometimes be established on a qualitative basis. Also, this International Standard is not applicable to non-volatile chemicals. This method has been shown to be applicable for the identification of the following compound classes: _ saturated halogenated hydrocarbons; _ unsaturated halogenated hydrocarbons; _ esters; aldehydes; alcohols; amines; ketones; ethers; _ cyclic and aromatic compounds; _ nitrogen compounds; _ acrylates; etc. The method has been evaluated for concentrations in the range of 1 mg/kg to 10 mg/kg.