Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Molecules. 2021 Nov 25;26(23):7143. doi: 10.3390/molecules26237143.
A gas chromatography-mass spectrometry (GC/MS) method for the determination of hexabromocyclododecane (HBCD) in expanded polystyrene and extruded polystyrene foam (EPS/XPS) was developed. The EPS/XPS samples were ultrasonically extracted with acetone and the extracts were purified by filtration through a microporous membrane (0.22 μm) and solid-phase extraction. The samples were analyzed using a GC/MS using the selected ion monitoring mode. The ions 157, 319 and 401 were selected as the qualitative ions, while ion 239 was chosen as the quantitative ion. An HBCD standard working solution with a concentration range of 1.0-50.0 mg/L showed good linearity. The detection limit of HBCD was 0.5 mg/kg, meeting the LPC limit (<100 or 1000 mg/kg). Six laboratories were selected to verify the accuracy of the method, and 10 samples were tested. The interlaboratory relative standard deviation range was 3.68-9.80%. This method could play an important role in controlling HBCD contamination in EPS/XPS.
建立了一种气相色谱-质谱法（GC/MS）测定膨胀聚苯乙烯和挤出聚苯乙烯泡沫（EPS/XPS）中六溴环十二烷（HBCD）的方法。将 EPS/XPS 样品用丙酮超声提取，提取物通过微孔膜（0.22 μm）过滤和固相萃取进行纯化。采用选择离子监测模式的 GC/MS 对样品进行分析。选择离子 157、319 和 401 作为定性离子，离子 239 作为定量离子。HBCD 标准工作溶液的浓度范围为 1.0-50.0 mg/L，线性良好。HBCD 的检测限为 0.5 mg/kg，符合 LPC 限值（<100 或 1000 mg/kg）。选择了 6 个实验室来验证该方法的准确性，测试了 10 个样品。实验室间相对标准偏差范围为 3.68-9.80%。该方法在控制 EPS/XPS 中 HBCD 污染方面可能发挥重要作用。
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