Kuki Ákos, Nagy Lajos, Nagy Tibor, Zsuga Miklós, Kéki Sándor
Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, 4032, Hungary.
Anal Bioanal Chem. 2017 Oct;409(26):6149-6162. doi: 10.1007/s00216-017-0553-x. Epub 2017 Aug 11.
Direct analysis in real time mass spectrometry (DART-MS) was used to characterize commercial polyurethane (PUR) samples without sample pretreatment. More than 50 substances, such as catalysts, stabilizers, antioxidants, flame retardants, plasticizers, chain extenders, chain terminators, polyols, solvents, degradation products and contaminants, a few of them presumably toxic, were detected and identified in 18 PUR items. The identification of 16 compounds was further confirmed by DART MS/MS experiments. Catalysts were the largest class of compounds detected in the PURs by DART-MS. In each of the 18 PUR samples, at least one catalyst residue was identified. In addition, DART-MS was able to detect the migration of hazardous chemicals from the PURs to other objects. The collision-induced dissociation (CID) properties of two PUR catalysts, such as the protonated bis[2-(dimethylamino)ethyl] ether (DMAEE) and the protonated 2,2-dimorpholinodiethylether (DMDEE), as well as those of two PUR antioxidants (Antioxidant 1135 and Antioxidant 1076), were explored.
采用实时直接分析质谱法（DART-MS）对商用聚氨酯（PUR）样品进行表征，无需进行样品预处理。在18种PUR产品中检测并鉴定出50多种物质，如催化剂、稳定剂、抗氧化剂、阻燃剂、增塑剂、扩链剂、链终止剂、多元醇、溶剂、降解产物和污染物，其中一些可能有毒。通过DART MS/MS实验进一步确认了16种化合物的鉴定结果。催化剂是DART-MS在PUR中检测到的最大一类化合物。在18个PUR样品中的每一个中，至少鉴定出一种催化剂残留物。此外，DART-MS能够检测到危险化学品从PUR迁移到其他物体上。研究了两种PUR催化剂，如质子化双[2-(二甲氨基)乙基]醚（DMAEE）和质子化2,2-二吗啉二乙醚（DMDEE），以及两种PUR抗氧化剂（抗氧化剂1135和抗氧化剂1076）的碰撞诱导解离（CID）特性。
