摘要
建立检测市场上儿童驱蚊扣产品中菊酯类物质的气相色谱质谱方法,方法确定了甲醇为萃取溶剂,萃取液经HLB固相萃取小柱净化,以乙酸乙酯为洗脱溶剂,收集洗脱液,洗脱液经旋转蒸发浓缩后,用质谱检测器检测,确定每种菊酯类物质的特征离子,采用选择离子扫描(SIM),外标法定量。结果表明8种菊酯类化合物的质量浓度在0.05~1.0 mg/L范围内与其对应的峰面积成良好的线性关系,相关系数均不小于0.998,检出限为0.01~0.61μg/L。3个加标水平样品的平均回收率为91.8%~119.2%,测定结果的相对标准偏差为0.94%~6.43%(n=5)。该方法前处理简便,线性和重复性良好,可用于驱蚊扣产品中菊酯类物质的检测。
A gas chromatography-mass spectrometry(GC-MS)method was developed for the determination of pyrethroids residues in mosquito repellent products for children on the market.Methanol was identified as the extraction solvent.The extraction solution was purified by HLB solid phase extraction column.Ethyl acetate was used as the eluting solvent.,After the eluate was concentrated by rotary evaporation,it was detected by a mass spectrometer to determine the characteristic ions of each pyrethroid substance,and quantified by selective ion scanning(SIM)and external standard method.The results show that there is a good linear relationship between the mass concentration of the eight pyrethroids and their corresponding peak area within the range of 0.05-1.0 mg/L,the correlation coefficients are not less than 0.998,and the detection limits are 0.01-0.61μg/L.The average recoveries of the three spiked level samples are 91.8%-119.2%,and the relative standard deviations are 0.94%-6.43%(n=5).The method has the advantages of simple pretreatment,good linearity and repeatability,and can be used to detect pyrethroids in mosquito repellent products.
作者
谭丽君
李欣
TAN Li-jun;LI Xin(Hunan Testing Institute of Product and Commodity Supervision,Changsha,Hunan 410000,China)
出处
《日用化学工业》
CAS
CSCD
北大核心
2020年第10期731-734,共4页
China Surfactant Detergent & Cosmetics
基金
湖南省质量技术监督局资助项目(2018KJJH11)。
