Active carbon tube adsorption were used for sampling of methacrylonitrile, then thermal desorption analysis was performed by GC(FID).

活性碳管附空气中甲基丙烯腈,热解后气相色谱(FID)测。

Desorption ratio attained 97.35% and the purity of procyanidins was 95.25% when the concentration of ethal was 40% as elution solvent.

40％醇溶液洗脱，解率97.35%，原花青素95.

Desorption chemical ionization mass spectrometry of twelve metallohematoporphyrin complexes has been investigated under DEP condition using mixture of tetramethylsilane and methane as regent gas.

本文四甲基硅烷／甲烷混合反应气，采用DEP技术，测12个金属血卟啉络合物的解化学电离质谱。