芥子气过氧化物消毒产物的气相色谱-质谱测定

采用气相色谱-质谱(GC-MS)技术对芥子气的过氧化物消毒产物进行了分离和检测。不完全消毒定性检测到芥子气的6种氧化产物,未检测到其水解产物。增加消毒剂用量和延长消毒时间都会使消毒产物进一步氧化,最终变成二乙烯基砜、氯乙基乙烯基砜和芥子砜3种消毒产物。定量分析得出,1 mol芥子气生成的最终消毒产物分别为二乙烯基砜0.193 mol,氯乙基乙烯基砜0.145 mol,芥子砜0.504 mol。3种化合物线性范围1~30 mg/L,加标回收率在57%~78%之间,相对标准偏差小于3.1%,检出限均为0.5 mg/L。

Determination of Peroxide Decontamination Products of Mustard Gas by Gas Chromatography- Mass Spectrometry

The peroxide decontamination products of mustard gas(HD) were separated and detected by gas chromatographymass spectrometry.Six oxidation products were detected,but no hydrolysate was detected.With the increasing of decontaminant and prolonging of decontamination time,the final decontamination products were divinyl sulphone(DVSO2),choroethyl-vinyl sulphone(CEVSO2) and bis(2-choroethyl) sulphone(HDO2).1 mol of HD were converted to 0.193 mol of DVSO2,0.145 mol of CEVSO2,and 0.504 mol of HDO2,respectively.The linear range for DVSO2,CEVSO2 and HDO2 were 1-30 mg/L,the recovery for DVSO2,CEVSO2 and HDO2 were between 57% and 78%,the relative standard deviation were less than 3.1%,the detection limits were 0.5 mg/L.