基于胶束增强荧光法的高温煤焦油中酚类含量测定研究

Determination of Phenol Content in High Temperature Coal Tar Based on Micellar Enhanced Fluorescence Method

基于胶束增强荧光法测定高温煤焦油中酚类含量。取100 m L的煤焦油样品,将样品放入带有温度计的蒸馏烧瓶中,随后再将样品转放到蒸馏仪器转子中经过对蒸馏烧瓶的加热,再用调节弹簧对连接仪器的连接部分进行加紧,防止气体泄漏,随后再将煤焦油进行温度段位划分启动真空装置,观察蒸馏装置中的空余体积,防止样品在蒸馏装置中产生爆沸现象或者起泡现象,经过煤焦油的蒸馏实验可以得到煤焦油中的杂质较多的酚类化合物,测定高温煤焦油中酚类含量。结果表明胶束荧光灯对不同温度阶段的煤焦油酚类测定在实验初始状态下酚类含量呈不同斜率的线性增长,当温度段达到高温状态时,酚类含量的测定曲线逐渐归于平稳状态。基于胶束增强荧光法的高温煤焦油中酚类含量测定方法具备有效性。

To determine the content of phenols in high temperature coal tar based on micellar enhanced fluorescence method.Take a 100 mL sample of coal tar,place the sample in a distillation flask with a thermometer,and then transfer the sample to the distillation instrument rotor.After heating the distillation flask,adjust the connection part of the instrument with an adjustment spring.Tighten the prevention of gas leakage,use the adjustment spring to tighten the connection part of the connected instrument to prevent gas leakage,and then divide the coal tar temperature segment to start the vacuum device.Observe the free volume in the distillation device to prevent the sample from bumping in the distillation device Phenomenon or foaming phenomenon,through the coal tar distillation experiment,phenol compounds with more impurities in the coal tar can be obtained,and the phenol content in the high temperature coal tar can be determined.The measurement of coal tar phenols at different temperature stages by micellar fluorescent lamps showed a linear increase in phenol content with different slopes in the initial state of the experiment.When the temperature range reached a high temperature state,the measurement curve of phenol content gradually returned to a steady state.The method for determination of phenols in high temperature coal tar based on micellar enhanced fluorescence method is effective.