摘要
建立了一种气相色谱-质谱联用(GC-MS)测定婴幼儿地垫中甲酰胺残留量的检测方法,考察了提取溶剂、提取方法、溶剂体积、提取时间和色谱柱对甲酰胺提取效果的影响。结果表明:在0.5~50 mg/L范围内,甲酰胺浓度与色谱峰面积呈良好的线性关系,线性相关系数r>0.995,方法检出限为1.0 mg/kg;2.5、10、50 mg/kg3种添加水平下的平均回收率分别为89.5%、91.2%、93.3%,相对标准偏差(RSD)分别为3.62%、4.40%、5.32%。将该方法应用于实际样品的测定,可取得满意效果。
A determination method of formamide residue in baby mat by gas chromatography-mass spectrometry(GC-MS) was developed. The effects of extraction solvent, extraction method, solution volume, extraction time and chromatographic column on the extraction effi ciency of formamide were investigated. The results show that the concentration of formamide is linear with chromatographic peak area in the range of 0.5~50 mg/L. The linear correlation coeffi cients(r)are more than 0.995. The detection limit is 1.0 mg/kg. At the spiking levels of 2.5, 10, 50 mg/kg, the average recoveries are 89.5%, 91.2%, 93.3%, and the relative standard deviations are 3.62%, 4.40%, 5.32%, respectively. The method has been applied to the determination of real samples with satisfactory results.
作者
刘彬
刘云虎
Liu Bin;Liu Yunhu(Institution of Supervision and Inspection Product Quality of Guizhou Province,Guiyang 550016,China)
出处
《塑料科技》
CAS
北大核心
2019年第1期121-124,共4页
Plastics Science and Technology
