通过红外光谱、核磁共振和负离子电喷雾质谱三种表征技术鉴定了原油中的石油酸结构和组成。
The structures and compositions of the purified petroleum acids were characterized by using infra-red spectrum, nuclear magnetic resonance and negative-ion electrospray ionization mass spectrum.
用红外光谱MALDI-TOF质谱和同步X 射线吸收谱以及计算机模拟对NDH进行了鉴定和表征。
NDH was identified and characterized with infrared (IR), MALDI-TOF mass, and synchrotron X-ray absorption spectroscopies (XAS), and with computer simulations.
通过红外光谱、差示量热扫描等手段对所合成样品进行表征和鉴定。
The sample of crystals was characterized by DSC, XRD and IR spectroscopy.
结果利用气相色谱、色谱-质谱联用、红外光谱等分析表征手段，鉴定反应产物确实是硼酸三甲酯。
By means of gas chromatography, mass spectrometry and IR spectrum, the product was confirmed to be trimethyl borate.
结果利用气相色谱、色谱-质谱联用、红外光谱等分析表征手段，鉴定反应产物确实是硼酸三甲酯。
By means of gas chromatography, mass spectrometry and IR spectrum, the product was confirmed to be trimethyl borate.
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