快速测定水中三氯乙醛方法探讨
Discussion on Rapid Determination of Trichloroacetaldehyde in Water
吴玉敏 1何明穗 1李娜1
作者信息
- 1. 广东省韶关生态环境监测中心站,广东 韶关 512026
- 折叠
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 0.70 μg/L,测定下限为 2.80 μg/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.
Abstract
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 were 96.6%～100%,89.6%～101%and 97.2%～104%,respectively.When the sampling volume was 10.0 mL,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.
关键词
顶空气相色谱/三氯乙醛/水质/三氯甲烷Key words
headspace gas chromatography/trichloroacetaldehyde/water quality/trichloromethane引用本文复制引用
出版年
2024
NETL
NSTL
万方数据