烟花火药中六氯代苯含量的GC-MS快速测定

Rapid Determination of Hexachlorobenzene Content in Pyrotechnic Composition by GC-MS

提出了烟花火药中六氯代苯含量的快速测量方法，样品采用丙酮提取，提取液浓缩后用气相色谱-质谱-选择监测离子模式（GC-MS-SIM）测定，外标法定量。当添加浓度在0．025～10mg／kg范围内时，回收率在82．9％-105．3％，相对标准偏差（RSD）为2．5％～8.4％，测定低限是0．025mg／kg。采用保留时间和选择监视离子丰度比对阳性样品进行确证。

A rapid method for determination of hexachlorobenzene content in pyrotechnic composition by gas chromatographymass spectrography-selected ion monitor mode（GC-MS-SIM） has been established. Hexachlorobenzene was extracted from the sample with acetone. Using external standard method, the analyte was determined by GC-MS-SIM. When spiked concentration ranged from 0.025-10 mg/kg, the recovceries ranged from 82.9% to 105.3%, the RSD was between 2.5% and 8.4%, and the limit of determination reached as low as 0.025 mg/kg, The residue was confirmed by the retention time and the abundance ratios of the monitoring ions.