自动顶空-气相色谱法测定地表水中乙醛的方法研究 |
| |
引用本文: | 邢志贤,刘学全,崔彩芬,任汉英,刘涛涛,赵鑫,王玲,刘宝友.自动顶空-气相色谱法测定地表水中乙醛的方法研究[J].河北机电学院学报,2010(3):143-145,173. |
| |
作者姓名: | 邢志贤 刘学全 崔彩芬 任汉英 刘涛涛 赵鑫 王玲 刘宝友 |
| |
作者单位: | [1]河北省环境监测中心站,河北石家庄050051 [2]中国地质科学院水文地质环境地质研究所,河北石家庄050803 [3]河北科技大学环境科学与工程学院,河北石家庄050018 |
| |
摘 要: | 在手动顶空法的基础上建立了自动顶空-气相色谱法测定地表水中乙醛的方法,并从顶空进样器载气压力、顶空瓶压力、样品环充满时间、顶空瓶温度、加压时间、进样环温度、进样环平衡时间、传输线温度、进样时间等方面对顶空进样器条件进行了全面优化。同时对该方法的灵敏度、精密度和标准曲线的线性等指标进行了验证。结果表明,自动顶空法不仅大大提高了工作效率,节省了人力,其方法的检出限(0.012 mg/L)、相对标准偏差(3.5%)、标准曲线的相关系数(0.999 8)均优于手动顶空法。
|
关 键 词: | 自动顶空 气相色谱 乙醛 |
Determination of acetaldehyde in ground water by auto headspace-gas chromatography |
| |
Authors: | XING Zhi-xian LIU Xue-quan CUI Cai-fen REN Han-ying LIU Tao-tao ZHAO Xin WANG Ling LIU Bao-you |
| |
Affiliation: | 1. Environmental Monitoring Central Station of Hebei Province, Shijiazhuang Hebei 050051, China; 2. Institute of Environ- mental Geology and Hydrogeology, Chinese Academy of Geological Sciences, Shijiazhuang Hebei 050803, China; 3. College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China) |
| |
Abstract: | The determination method of acetaldehyde in ground water by auto headspace-gas chromatography was established. And the parameters of the headspace sampler such as vial pressuring time, loop temperature, loop equal time, sample loopfill time and vial temperature were optimized. The sensitivity and precisions of this method were tested. The result of the study shows that the method not only has better detection limit (0. 012 mg/L), relative standard deviation (3.5 % ) and linear correlation coefficient (0. 999 8) than manual headspace, but also improves the detection efficiency significantly. |
| |
Keywords: | auto headspace gas chromatography acetaldehyde |
本文献已被 维普 等数据库收录! |
|