摘要
实验采用顶空-气相色谱法对水样的一氯苯进行分析,优化顶空的前处理条件及气相色谱条件,方法最低检测浓度可达0.005mg/L,标准曲线的线性相关系数r^2=0.9999,线性范围为0.1~2mg/L,样品平均加标回收率在101.4%~103.4%之间,相对标准偏差在1.6%~6.94%之间。该方法操作操作简单,重现性好、检出限低,适合水中一氯苯的检测。
Abstract
The experimental adopts Headspace - Gas Chromatography method on analyzing 1-chlorobenzene in water sample, which optimizes pre-treatment and GC condition of Headspace - Gas Chromatography. The method could achieve the minimum detectable concentration to 0.005mg/L, the relevant linear correlation coefficient of standard curve to 0.9999, the linear range between 0.1 mg/L to 2mg/L, the average added recovery between 101.4% to 103.4%, and the relative standard deviation between 1.6% to 6.94%. The method fits the detection of 1-chlorobenzene in water with simple operation, good reproducibility, and low detectable concentration.