气相色谱法检测双氧水工作液中溶剂组分

Determination of the solvent components in working solution for hydrogen peroxide using GC

根据蒽醌法生产双氧水中间质量控制的需求,建立了一种气相色谱法测定工作液溶剂组分的方法。先根据重芳烃(AR)、四丁基脲(TBU)和磷酸三辛酯(TOP)单标的保留时间进行定性分析,再采用五点法对工作液各溶剂组分进行定量分析。结果表明:气相色谱法可准确测定蒽醌法生产双氧水工作液中AR、TBU和TOP的含量,AR、TBU和TOP的保留时间分别为6.200~10.200(最高峰7.403)、18.672和24.310 min。该方法操作简单、相对标准偏差在0.03%~0.41%之间、加标回收率在95.67%~100.14%之间,可用于蒽醌法生产双氧水中间过程质量控制。

A method for the gas chromatography-based solvent component detection in working solution has been developed,based on the intermediate quality control in the anthraquinone process used to produce hydrogen peroxide.Following a qualitative analysis of the retention times of heavy aromatics(AR),tetrabutylurea(TBU),and tris(2-ethylhexyl)phosphate(TOP),the five-point method was utilized for the quantitative examination of the solvent components in the working solution.The findings demonstrated that the concentration of three different types of solvents in the working solution for the anthraquinone process of producing hydrogen peroxide could be precisely ascertained by means of gas chromatography(GC).The retention times of AR,TBU,and TOP were 6.200~10.200(with the highest peak occurring at 7.403),18.672,and 24.310 minutes,respectively.Using this straightforward approach,the relative standard deviation for the solvent components of the working solution and recovery rate were 0.03%~0.41%and 95.67%~100.14%,respectively.These values can be utilized to track the intermediate process quality of the anthraquinone process of producing hydrogen peroxide.