摘要
建立了测定空气中苯系物的活性炭吸附/二硫化碳解析和吸附管吸附/热脱附-气相色谱法,并对两者进行分析比对。结果表明,两种方法曲线线性良好,精密度、准确度符合分析要求。其中,热脱附法灵敏度更高、检出限更低、精密度更好,适用于较清洁空气中苯系物的测定;而解析法更适用于较高浓度样品的分析。
The methods of detecting airborne BTEX by using activated carbon adsorption/carbon disulfide desorption and sorbent tube adsorption/thermal desorption- gas chromatography were developed and compared. The results showed that the linearity, precision and accuracy of the two methods met the analysis requirements. Among them, the thermal desorption with higher sensitivity, lower detection limit and better precision was better for detecting BTEX in cleaner air, while the solvent desorption method was more suitable for analysis of high concentration samples.
出处
《广州化工》
CAS
2014年第8期132-133,共2页
GuangZhou Chemical Industry
关键词
苯系物
解析法
热脱附法
方法比对
BTEX
solvent desorption
thermal desorption
method comparison
