香味荧光笔挥发物的质谱分析及安全性研究

香味荧光笔在中小学生中应用很普遍,但尚不确定香味荧光笔是否有毒.为此,首次开展国产香味荧光笔挥发物检测实验研究.采用固相微萃取-气相色谱-质谱(SPME-GC-MS)分析方法,对整支荧光笔及各拆解部件逐个进行挥发物检测,结果表明荧光笔气味来自笔内墨水;在带香味的四种品牌迷你型荧光笔中,共计检测出了15种挥发物,各品牌均含有高毒物质丙烯腈以及禁止人为添加物质乙苯.利用质子转移反应质谱在线监测方法,测量了荧光笔书写时纸张上方不同高度处的丙烯腈浓度,结果表明只要与纸张保持20 cm以上距离,可以有效降低有毒成分对使用者的侵害。

Mass Spectrometry Analysis and Safety for Volatile Organic Compounds from Scented Highlighter

Scented highlighter is widely used by primary and secondary students, but it is not certained that whether scented highlighter has toxicity. Therefore the first mass spectrometry analysis for the volatiles from the domestic scented highlighter was carried out. The volatiles emitted from the whole highlighter and each disassembled components were detected using solid-phase microextraction gas chromatography mass spectrometry (SPME-GC-MS). The experimental results showed that the highlighter odor arises from the ink inside. In four brands of mini highlighters, 15 kinds of volatile compounds were detected. Among them, high toxic acrylonitrile and banned additive ethylbenzene occurred in all brands. Using proton transfer reaction mass spectrometry online monitoring method, during highlighter wrote on the paper, the concentrations of acrylonitrile diffused to different height positions above the paper were determined. It is suggested that, as long as the distance from the paper is more than 20 cm, the infringement caused by inhaling poisonous odor can be effectively reduced.