吹扫捕集-气相色谱-质谱法测定土壤和地下水中四氢呋喃
王瑞,张琦琦,毛世峰,詹夏强
杭州中一检测研究院有限公司,杭州 310052
Determination of tetrahydrofuran in soil and groundwater by purge and trap gas chromatography-mass spectrometry
王瑞,张琦琦,毛世峰,詹夏强
Hangzhou Zhongyi Testing Institute Co., Ltd., Hangzhou 310052, China
摘要:建立吹扫捕集-气相色谱-质谱法测定土壤和地下水中四氢呋喃。最佳的吹扫捕集条件:吹扫温度为40
℃,吹扫时间为15 min,脱附温度为250 ℃,脱附时间为2 min。四氢呋喃的质量浓度在10~200 μg/L 范围内与色谱峰面积线性关系良好,相关系数不小于0.990。土壤和地下水中四氢呋喃的检出限分别为1.5、1.4 μg/L,标准样品平均加标回收率分别为84.5%、77.2%,测定结果的相对标准偏差分别为3.3%、5.8% (n=6)。该方法适用于土壤和地下水中四氢呋喃含量的检测。
Abstract:A method for determining tetrahydrofuran in soil and groundwater by purge and trap gas chromatography-
mass spectrometry was established. The optimum purge and trap condition were determined as the following: purge
temperature was 40 ℃, purge time was 15 min, desorption temperature was 250 ℃, and desorption time was 2 min. The
linear ranges of tetrahydrofuran were 10-200 μg/L, the correlation coefficient was more than 0.990. The detection limits
(LOD) of tetrahydrofuran were 1.5 μg/L and 1.4 μg/L. The average recoveries of tetrahydrofuran in standard samples were 84.5% and 77.2% with the relative standard deviation of 3.3% and 5.8% (n=6), respectively. The method is suitable for the analysis and detection of tetrahydrofuran in soil and groundwater.
关键词:吹扫捕集;气相色谱-质谱法;四氢呋喃;土壤;地下水
Keywords:purge and trap; GC-MS; tetrahydrofuran; soil; groundwater
本文引用格式:
王瑞,张琦琦,毛世峰,等. 吹扫捕集- 气相色谱- 质谱法测定土壤和地下水中四氢呋喃[J]. 化学分析计量,2021,30(3):65.
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