The development of a SPME-GC/MS method for the analysis of VOC emissions from historic plastic and rubber materials
The development of a SPME-GC/MS method for the analysis of VOC emissions from historic plastic and rubber materials
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DOI：
10.1016/j.microc.2015.08.027
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发表时间：
2016-01-01
影响因子：
4.8
通讯作者：
Strlic, Matija
中科院分区：
文献类型：
--
作者：
Curran, Katherine;Underhill, Mark;Strlic, Matija
使用SPME-GC/MS分析历史塑料和橡胶材料中VOC排放的分析方法已经开发出来。研究了分析温度、采样时间和SPME纤维涂层选择等参数，并探索了采样制备策略，包括小瓶顶空采样和气体采样袋取样。评价了该方法的重复性。研究发现，在室温下进行7天的积累时间，然后使用DVB/CAR/PDMS纤维进行采样，在室温下采样时间为60分钟，是检测各种历史塑料和橡胶制品中VOC排放的合适策略。对于20毫升的小瓶，50毫克的样本量被认为是合适的，研磨样品提高了分析的可重复性，并产生了更高的排放水平。还提出了一种非破坏性的方法，可以直接用于博物馆环境中的历史物品。探测到的排放物除了提供关于材料成分的信息外，还增进了对历史塑料和橡胶材料内正在进行的降解过程的了解。(C) 2015 Elsevier B.V.版权所有
Analytical methods have been developed for the analysis of VOC emissions from historic plastic and rubber materials using SPME-GC/MS. Parameters such as analysis temperature, sampling time and choice of SPME fibre coating were investigated and sampling preparation strategies explored, including headspace sampling in vials and in gas sampling bags. The repeatability of the method was evaluated. It was found that a 7 d accumulation time at room temperature, followed by sampling using a DVB/CAR/PDMS fibre, with a sampling time of 60 min at room temperature was a suitable strategy for the detection of VOC emissions from a wide range of historic plastic and rubber artefacts. For 20 ml vials, a sample size of 50 mg was found to be appropriate and grinding the samples improved the repeatability of the analysis and yielded higher levels of emissions. A non-destructive adaptation of the method that could be used directly on historic objects in a museum environment is also presented. The detected emissions improve understanding of ongoing degradation processes within historic plastic and rubber materials, in addition to providing information on material composition. (C) 2015 Elsevier B.V. All rights reserved.