毛细管气相色谱法测定洗涤剂中的甲醇  

Determination of methanol in dishwashing by capillary gas chromatography

作　　者：郝文[1] 孙维[1] 

机构地区：[1]山东省青岛市疾病预防控制中心,山东青岛266033

出　　处：《中国卫生检验杂志》2009年第1期81-82,共2页Chinese Journal of Health Laboratory Technology

摘　　要：目的:建立洗涤剂中甲醇的毛细管气相色谱测定方法。方法:洗涤剂样品用水溶解稀释,直接进入气相色谱仪,经DB-FFAP毛细管柱分离,FID检测器检测,峰面积定量。结果:本法对液体洗涤剂检出限为9.4μg/ml,对固体洗涤剂检出限为0.047 mg/ml,甲醇在0～2.0 mg/ml浓度范围内呈线性关系,平均回收率为95%～100%,相对标准偏差(RSD)为0.9%～6.4%。结论:该法操作简便、灵敏、准确可靠,可适用于各种洗涤剂的测定。Objective：To establish a rapid determination of methanol in dishwashing by capillary gas chromatography. Methods：Dishwasbing samples were dissolved by water, directly entered into the instrument, separated on DB -FFAP capillary column and detected by FID detector, quantified by peak areas. Results：With this method, detection limits（ S/N = 3 ） of liquid and solid dishwashing were 9.4 μg/ml and 0. 047 mg/ml, respectively. The calibration curve showed good linearity in the range of 0 - 2.0 mg/ml. The mean recovery was between 95% and 100% , and the relative standard derivation was between 0. 9% and 6.4%. Conclusion ：This method is simple, sensitive and accurate. It is reliable to determine methanol in dishwashing.

关 键 词：毛细管气相色谱 洗涤剂 甲醇 

分 类 号：O657.71[理学—分析化学]