毛织物中防蛀剂含量测定不确定度评定  

Evaluation on uncertainties in determination of permethrin in wool fabric

作　　者：唐川江[1,2] 聂锦梅[1,2] 李青[1,2] 屠凡[1,2] 

机构地区：[1]北京服装学院材料科学与工程学院,北京100029 [2]北京市服装安全检测与评价重点实验室,北京100029

出　　处：《毛纺科技》2015年第6期43-47,共5页Wool Textile Journal

基　　金：北京市教委面上项目(项目编号:KYJH02140201/019);北京市服装安全检测与评价重点实验室项目(项目编号:KYJD02140215)

摘　　要：根据FZ/T 20003—2007《毛纺织品防虫蛀剂含量化学分析方法》,将毛织物经甲醇浸泡,超声提取,过滤后,由高效液相色谱仪分离氯菊酯异构体并对其作定量测定。对高效液相色谱法测定毛织物中氯菊酯含量的不确定度进行了分析,评估了测定过程中影响结果的各个分量,最终合成总的不确定度。取包含因子k=2(约95%的置信概率),毛织物中氯菊酯的含量为138.31 mg/kg时,扩展不确定度u=10.24 mg/kg。结果表明标准工作液、配制标准溶液以及样品提取回收率、样品重复测定是贡献最大的不确定度分量。According to FZ/T 20003--2007 standard, the wool fabric is soaked and ultrasonic extracted by methanol. After filtration, permethrin isomers are separated and the content are determined with high performance liquid chromatography. The sources of uncertainty are analyzed to compose steps for whole determination procedure. The various components which will influence the result during the determination are analyzed and evaluated in detail. The uncertainty of each component was evaluated and synthesized. Taking the coverage factor k = 2 （confidence probability was about 95% ） , the content of permethrin in wool fabric was 138.31 mg/kg, and the expanded uncertainty u = 10.24 mg/kg. The results showed that the reproducibility of standard solution and sample measurements, concentration of the standard solution, the recovery of permethrin during extraction are the main factors influencing the determination process of permethrin.

关 键 词：氯菊酯 不确定度 高效液相色谱 毛织物 纺织品 

分 类 号：TS107[轻工技术与工程—纺织工程] O657.72[轻工技术与工程—纺织科学与工程]