气相色谱-质谱法测定土壤中苯胺的方法确认研究

Study on the method confirmation of Aniline in Soil by Gas Chromatography-Mass Spectrometry

研究了气相色谱-质谱法测定土壤中苯胺的非标方法确认过程。通过三家实验室间的比对得出:苯胺的检出限为0.02mg/kg~0.03mg/kg,测定下限为0.08mg/kg~0.12mg/kg,三家实验室分别对加标浓度为0.25mg/kg、0.50mg/kg和1.0mg/kg的样品进行测定,实验室内相对标准偏差为2.5%~9.2%、1.0%~6.0%、2.0%~7.2%,重复性限为0.021mg/kg、0.038mg/kg、0.083mg/kg,再现性限为0.089mg/kg、0.091mg/kg、0.174mg/kg,加标回收率最终值为(66.6±10.0)%、(64.2±8.6)%、(63.0±7.2)%,各项指标均达到预期要求,满足土壤中苯胺的测定。

The validation process of the non-standard method for the determination of aniline in soil by gas chromatographymass spectrometry was studied.Through the comparison between the three laboratories,the detection limit of aniline is 0.02mg/kg~0.03mg/kg,and the detection limit is 0.08mg/kg~0.12mg/kg.0.25mg/kg,0.50mg/kg and 1.0mg/kg samples are measured,the relative standard deviation in the laboratory is 2.5%~9.2%,1.0%~6.0%,2.0%~7.2%,repeatability limits are 0.021mg/kg,0.038mg/kg,0.083mg/kg,reproducibility limits are 0.089mg/kg,0.091mg/kg,0.174mg/kg,and the final recoveries of standard addition were(66.6±10.0)%,(64.2±8.6)%,(63.0±7.2)%,and all indicators reached expectations Requirements to meet the determination of aniline in soil.