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,热后气(FID)测定。

The triphenylamine azo compounds were successfully characterized by matrix-assisted laser desorption-ionization time of flight mass spectrometry(MALDI-TOF MS).

利用基辅助激光电离飞行时间法分析三苯胺偶氮化合物。

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

以40％乙醇溶液洗，率达97.35%，原花青素纯度达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.

本文以四甲基硅烷／甲烷混合反应气，采用DEP技术，测定12个金属血卟啉络合物的化学电离。