Identification and analysis of polymer additives using packed-column supercritical fluid chromatography with APCI mass spectrometric detection
Identification and analysis of polymer additives using packed-column supercritical fluid chromatography with APCI mass spectrometric detection
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DOI：
10.1039/a803922d
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发表时间：
1998-09-01
期刊：
影响因子：
4.2
通讯作者：
Davidson, G
中科院分区：
文献类型：
--
作者：
Carrott, MJ;Jones, DC;Davidson, G
填充柱超临界流体色谱(PSFC)结合大气压化学电离(APCI)质谱仪(MS)检测，为检测和定量20种聚合物添加剂提供了一种通用的方法，包括常见的抗氧化剂、光稳定剂和滑移剂。在正离子和负离子模式下，用APCIMS获得了分子质量数据和信息量的裂解图谱。对Tinuvin 327(68pg)和Irganox 1010(390pg)，用正离子APCI(单离子监测)测定的检出限分别为150pg和470pg。添加剂的标准混合物可在不到15分钟的时间内分离出来，分辨率高。对从聚乙烯中提取的添加剂的实验证实了这些观察结果，不仅有可能鉴定出一些添加剂，而且在抗氧化剂Irgafos 168的情况下，还可能鉴定出一种氧化产物。
Packed-column supercritical fluid chromatography (pSFC) with detection using atmospheric pressure chemical ionisation (APCI) mass spectrometry (MS) provides a versatile method for the detection and quantification of 20 polymer additives, including-common antioxidants, light stabilisers and slip agents. Using MS with APCI in both positive and negative ion modes both molecular mass data and informative fragmentation patterns were obtained. The pSFC-MS technique was-shown to be linear over a wide concentration range (0.05-25 mu g ml(-1)) and picogram limits of detection with positive ion APCI (single ion monitoring) were determined for Tinuvin 327 (68 pg) and Irganox 1010 (390 pg): The corresponding figures for negative ion APCI were 150 and 470 pg, respectively. Standard mixtures of additives could be separated in less than 15 min with a high degree of resolution. Experiments on additives extracted from polyethylene confirmed these observations, and it was possible not only to identify a number of the additives, but also, in the case of the antioxidant Irgafos 168, an oxidation product.