摘要
本文建立了水中三氯乙醛快速预处理和分析测定的方法条件,对比国标测定流程能大幅缩短总分析测定时间,并分别对不同水样和不同基体加标浓度进行重复测定,其相对标准偏差分别为1.5%~2.0%、2.4%~6.2%和1.8%~4.0%,加标回收率分别为96.6%~100%、89.6%~101%、97.2%~104%,当取样体积为10.0 mL时,三氯乙醛的校准曲线相关系数均≥0.995,三氯乙醛的方法检出限为0.70μg/L,测定下限为2.80μg/L,相关数据均满足且优于国标要求,以期为三氯乙醛国家标准方法进行比较、评估和改进提供参考。
In this paper,the method conditions for rapid pretreatment and analytical determination of trichloroacetaldehyde in water were established,and the total analysis and determination time could be greatly shortened compared with the national standard determination process,and the relative standard deviations were 1.5% ~2.0%,2.4% ~6.2% and 1.8% ~4.0%,respectively,and the recovery rates were96.6%~100%,89.6%~101% and 97.2%~104%,respectively.When the sampling volume was 10.0 m L,the correlation coefficients of the calibration curves of trichloroacetaldehyde were ≥ 0.995,the detection limit of trichloroacetaldehyde was 0.70 μg/L,and the lower limit of determination was 2.80 μg/L.
作者
吴玉敏
何明穗
李娜
Wu Yumin;He Mingsui;Li Na(Shaoguan Ecological Environment Monitoring Center of Guangdong Province,Shaoguan Guangdong 512026,China)
出处
《山西化工》
CAS
2024年第11期90-92,共3页
Shanxi Chemical Industry
关键词
顶空气相色谱
三氯乙醛
水质
三氯甲烷
headspace gas chromatography
trichloroacetaldehyde
water quality
trichloromethane
