工作场所空气中仲丁醇的毛细管气相色谱测定法
发布时间：2018-11-03 18:09
【摘要】：目的建立工作场所空气中仲丁醇的气相色谱测定法。方法用活性炭采样管采集工作场所空气中仲丁醇,以含1%异丙醇的二硫化碳解吸后进样,经毛细管色谱柱分离,氢焰离子化检测器检测,以保留时间定性、峰面积定量。结果仲丁醇在101.2~1 620.0μg/ml范围内呈线性关系,相关系数为1.000 0;方法的检出限为3.0μg/ml,定量下限为10.0μg/ml;在采样体积为1.5 L、解吸液体积为1.0 ml的条件下,方法的最低检出浓度为2.0 mg/m~3,最低定量浓度为6.7 mg/m~3。不同浓度仲丁醇的相对标准偏差(RSD)为2.79%~4.76%,加标回收率为96.5%~97.4%。结论该方法灵敏度高,精密度好,准确度好,适用于工作场所空气中仲丁醇的测定。
[Abstract]:Objective to establish a gas chromatographic method for the determination of sec-butanol in workplace air. Methods Para-butanol in workplace air was collected by activated carbon sampling tube, then desorbed by carbon disulfide containing 1% isopropyl alcohol. The sample was separated by capillary chromatography and detected by hydrogen flame ionization detector. The retention time and peak area were determined qualitatively and quantitatively. Results the linear range of para-butanol was 101.2 渭 g/ml, the correlation coefficient was 1.000, the detection limit of the method was 3.0 渭 g / ml and the limit of quantification was 10.0 渭 g / ml. Under the condition that the sample volume is 1.5 L and the desorption volume is 1.0 ml, the lowest detection concentration is 2.0 mg/m~3, and the lowest quantitative concentration is 6.7 mg/m~3.. The relative standard deviation (RSD) of para-butanol with different concentrations was 2.79 and 4.76.The recovery of the added standard was 96.5g / 97.4. Conclusion this method has high sensitivity, good precision and good accuracy. It is suitable for the determination of sec-butanol in workplace air.
【作者单位】： 天津市疾病预防控制中心职业病预防控制所实验室;
【分类号】：R134.4
，
本文编号：2308555
[Abstract]:Objective to establish a gas chromatographic method for the determination of sec-butanol in workplace air. Methods Para-butanol in workplace air was collected by activated carbon sampling tube, then desorbed by carbon disulfide containing 1% isopropyl alcohol. The sample was separated by capillary chromatography and detected by hydrogen flame ionization detector. The retention time and peak area were determined qualitatively and quantitatively. Results the linear range of para-butanol was 101.2 渭 g/ml, the correlation coefficient was 1.000, the detection limit of the method was 3.0 渭 g / ml and the limit of quantification was 10.0 渭 g / ml. Under the condition that the sample volume is 1.5 L and the desorption volume is 1.0 ml, the lowest detection concentration is 2.0 mg/m~3, and the lowest quantitative concentration is 6.7 mg/m~3.. The relative standard deviation (RSD) of para-butanol with different concentrations was 2.79 and 4.76.The recovery of the added standard was 96.5g / 97.4. Conclusion this method has high sensitivity, good precision and good accuracy. It is suitable for the determination of sec-butanol in workplace air.
【作者单位】： 天津市疾病预防控制中心职业病预防控制所实验室;
【分类号】：R134.4
，
本文编号：2308555
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