摘要
采用顶空气相色谱仪对甲醛、苯和甲苯3种吸附质在活性炭和分子筛上的热脱附进行了研究。首先对气相色谱顶空进样法重现性进行了验证,并试验证明了柱箱温度对FID的检测与响应值没有影响。测定了甲醛、苯和甲苯的标准曲线,得到不同温度下活性炭和分子筛对甲醛、苯和甲苯的热脱附曲线。结果表明,活性炭在较低的温度下即可脱附大部分甲醛和甲苯,而苯在分子筛上更易于脱附。
Thermal desorption of formaldehyde,benzene and toluene on activated carbon and zeolite was studied by HSGC in this article.First of all,the reproducibility of injection method of GC was validated.There was no influence on detection and response of FID by column temperature.The standard curve of formaldehyde,benzene and toluene were wade.The curve of thermal desorption of formaldehyde,benzene and toluene on activated carbon and zeolite was gotten in different temperature.As a result,the most of formaldehyde and toluene on activated carbon was desorpted in lower temperature.However,benzene on zeolite was easier to desorpt.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第4期139-140,共2页
Guangdong Agricultural Sciences
