摘要
研究了有机氯农药质控用标准样品的均匀性、稳定性和定值方法。本标准样品采用称量法制备,制备得到的标准样品通过了均匀性检验,且在30个月内是稳定的。其不确定度来源于多家实验室协作定值、均匀性和稳定性3个环节,并评定了各不确定度分量,其定值结果为:α-六六六为(10.8±1.0)μg/mL、β-六六六为(19.5±1.6)μg/mL、γ-六六六为(9.76±0.78)μg/mL、δ-六六六为(9.54±1.66)μg/mL、p,p'-DDE为(24.9±1.4)μg/mL、p,p'-DDD为(24.0±2.6)μg/mL、o,p'-DDT为(29.1±1.9)μg/mL、p,p'-DDT为(25.9±3.9)μg/mL。本标准样品制备浓度低,可用于环境监测工作中分析方法的验证、仪器性能的检定和分析技术人员的考核等。
Homogeneity, stability and certification of organo- chlorine pesticides reference material were carried out. It was prepared by gravimetry. Organochlorine pesticides reference material passed the test of homogeneity,and it was stable dur- ing 30 months at least. The sources of uncertainty in organo- chlorine pesticides reference material were the certification for the content via interlaborary comparison,homogeneity and sta- bility. The results are as follow:α-BHC( 10.8±1.0)μg/mL, β-BHC ( 19.5 ±1.6 ) μg/mL, γ-BHC ( 9.76 ± 0.78 ) μg/mL, δ-BHC(9.54 ±1.66) μg/mL, p,p'-DDE (24.9± 1.4) μg/mL ,p ,p'-DDD( 24.0 ± 2.6 ) μg/mL, o ,p'-DDT ( 29. 1 ± 1.9) μg/mL,p,p'-DDT(25.9 ±3.9) μg/mL.
出处
《化学试剂》
CAS
CSCD
北大核心
2014年第3期239-242,共4页
Chemical Reagents
关键词
有机氯农药
标准样品
定值
organochlorine pesticides
reference material
certification