空气中壬二酸的采样与测定。

The sampling and determination of azelaic acid in air.

作者信息

Palassis J

出版信息

Am Ind Hyg Assoc J. 1978 Sep;39(9):731-6. doi: 10.1080/0002889778507842.

Abstract

Air samples of azelaic acid (nonanedioic acid), were collected on polyvinyl chloride (PVC) filters, extracted with ethanol, derivatized with N, O-bis(trimethylsilyl)trifluoroacetamide (BSTFA), containing 1% trimethylchlorosilane (TMCS) and analyzed by gas-liquid chromatography. The esterification product is the trimethylsilyl ester, which is different from the methyl ester usually chosen in the esterification processes. A calibration curve was used to determine the azelaic acid content in the filter samples. The detection limit was 1 microgram per sample. Results indicate that the analytical method can be applied to other monocarboxylic and dicarboxylic acids.

摘要

壬二酸（壬烷二酸）的空气样本收集在聚氯乙烯（PVC）滤膜上，用乙醇萃取，用含1%三甲基氯硅烷（TMCS）的N，O-双（三甲基硅基）三氟乙酰胺（BSTFA）进行衍生化，并通过气液色谱法分析。酯化产物是三甲基硅酯，这与酯化过程中通常选择的甲酯不同。使用校准曲线来测定滤膜样本中的壬二酸含量。检测限为每个样本1微克。结果表明，该分析方法可应用于其他一元羧酸和二元羧酸。