气相色谱-质谱法测定空气清新剂中7种苯类化合物  

Determination of Seven Benzenes in Air Freshener by Gas Chromatography-mass Spectrum

作　　者：杨云 刘德云 张沛林 陈意光 谭建华 贾芳 Yang Yun Liy Deyun Zhang Peilin Chen Yiguang Tan Jiardaua Jia Fang(Guangzhou Quality Supervision and Testing Institute, Guangzhou 511447, China)

机构地区：[1]广州质量监督检测研究院,广东广州511447

出　　处：《广东化工》2016年第21期164-166,共3页Guangdong Chemical Industry

摘　　要：建立了空气清新剂中苯，甲苯，乙苯，对二甲苯，间二甲苯，邻二甲苯，1,4-二氯苯7种苯类化合物的气相色谱-质谱测定方法。样晶用N,N-二甲基甲酰胺稀释，用硫酸纳脱水。试液用滤膜过滤后用气相色谱。质谱仪测试。方法的检出限（S／N=3）均为2．5mg／kg。仪器线性范围在100-2000μg/L之间，相关系数r^2在0．9994到1．0000之间。在三个浓度的加标回收率在90．4%-119．4％之间。相对标准偏差在1．9％-6．6％之间。方法的特异性好，快速，灵敏度高，有较好的准确性和精密度，可作为空气清新剂中七种苯类化合物的检测方法。对空气清新剂质量安全监测有重要意义。A method has been established for determination of seven benzenes in air freshener. Sample was diluted by N,N-dimethylformamide and dehydrated by anhydrous sodium sulfate. The solution wasethyl derivative products were extracted by n-hexane then tested by gas chromatography-mass spectroscopy. The detection limits （S/N=3） of the compounds were 2.5 mg/kg, the linear ranges were between 100 μg/L and 2000 lag/L, with the correlation coefficients r2 from 0.9994 to 1.0000. The recoveries at three concentration levels were from 90.4 % to 119.41% with the relative standard deviations from 1.9 % to 6.6 %. It＇s a specific, fast, sensitive and accuracy method for determination of the seven benzenes in air freshener, tt will make great sense in safety quality inspection for air freshener.

关 键 词：苯类化合物 空气清新剂 气相色谱-质谱 

分 类 号：O65[理学—分析化学]