摘要
目的探讨空气中二硫化碳的气相色谱检测的计算方法。方法采用气相色谱分离,FPD检测器检测,并考察了甲苯作解吸液从活性炭上解吸二硫化碳的解吸效率。结果采用毛细管柱分离、FPD检测器时,峰面积和浓度关系以采用二次方程的拟合方式更为恰当,回归方程:y=0.001 x2+0.081 x+0.118 7,r=1,计算的浓度和配制浓度偏差小于6%,重复测定的RSD小于2%,定量下限为0.21μg/ml,用来测定溶液中二硫化碳的浓度能满足工作要求。采用甲苯作解吸液测定的解吸效率在20%～27%之间。结论建立的GC-FPD分离检测,二次方程拟合标准曲线法可以应用于溶液中二硫化碳的定量测定,但用甲苯作解吸液的条件甚至是其他的解吸液来解吸活性炭上的二硫化碳的技术还需要进一步的研究。
[ Objective] To develop a method for determining carbon disulfide in air by gas chromatography. [ Methods] Solution was separated with gas chromatography and determined with FPD detection, the desorption efficiency of toluene to carbon disulfide from activated carbon was observed. [ Results ] Quadratic equation was a better calibration method of standard curve, y = 0. 001, x2 ＋ 0. 081 x ＋0. 118 7,r = 1. The errors were below 6%. The repeated RSD was below 2%. The lower limit of quantization was 0. 21 μg/ml. Determination of the concentration of carbon disulfide solution could satisfy the work requirements. Toluene as a desorption solution, the desorption efficiencies were between 20% -27%, the results were much lower. [ Conclusion] The established GC- FPD separation and detection, quadratic fitted standard curve method can be used for quantitative determination of carbon disulfide solu- tion. The techniques of desorption on activated carbon disulfide with toluene as desorption solution even other desorption solution need to be further studied.
出处
《职业与健康》
CAS
2013年第15期1903-1905,1908,共4页
Occupation and Health
关键词
二硫化碳
气相色谱
火焰光度检测器
测定
空气
Carbon disulfide
Gas chromatography
FPD detection
Determination
Air
