The structure of objective product was confirmed by characterization with Fourier transform infrared spectrum (FTIR), nuclear magnetic resonance (1H NMR) and mass spectrometer (MS).
并通过傅里叶变换红外光谱（ FTIR）、 核磁共振谱图（1H NMR）以及质谱（MS）对产物进行了表征，确定了目标产物的结构。
With gas chromatographic and mass spectrum (GC-MS) analysis technology, the chemical composition of biomass tar and its distillations were analyzed.
主要采用色谱-质谱联机(GC - MS)成分分析法对生物质焦油及其馏分试样进行成分分析。
METHODS Gas chromatography mass spectrum(GC MS) was employed to detect the concentration of 3 MCPD in the blood after ig.
方法采用毛细管气相色谱质谱（GC MS）联用法测定大鼠血液中3 MCPD的含量。
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