mass spectroscopy

Using gas chromatography mass spectroscopy ( GC-MS) method, 14% unknown components and contents in pecan oil were determined for the first time.

采用色-质联用仪对山核桃仁油中14%的未知成分及含量进行了确定和分析。

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Some New Techniques of the Vapor Generation Sampling for Atomic Optical/ Mass Spectroscopy

原子光谱/质谱分析中蒸气发生法进样的非传统技术的研究

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Experimental leakage simulation of the 2-level large-scale hollow metallic ring seal and 3-level rubber O ring seal was performed with several high precision leak detectors, based on helium mass spectroscopy, to verify leakage theory of multi-level series seal.

为进一步验证多级串联密封系统的泄漏理论和规律，分别进行了双道大型空心金属圈模拟试验和三道橡胶圈泄漏模拟实验，试验中综合采用了灵敏度很高的各种氮质谱检漏方法。

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Depth profile of the SiOF thin film from secondary ion mass spectroscopy showed the uneven distribution of F in the film.

二次离子质谱对薄膜深度分析的结果表明，F在薄膜中的分布是不均匀的。

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Compared to conventional detection methods for the quantitative analysis of meal ions, such as atomic absorption spectroscopy, inductively coupled plasma mass spectroscopy ( ICPMS), the fluorescence detection method is more convenient and does not require complicated, multistep sample preparation or sophisticated instrument.

与传统金属离子检测方法，如原子吸收光谱，电感耦合等离子体质谱等方法相比，荧光检测方法操作简单且检测限低，不需要进行复杂的多级样本制备，而且设备仪器简单。

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The synthetic chimera polypeptide was confirmed by Edman degradation and MALDI TOF mass spectroscopy.

合成的嵌合体用Edman降解和MALDITOF质谱鉴定.

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Analysis of residual gases in end product picture tubes by mass spectroscopy

成品显象管残气质谱分析

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Osteogenic growth peptide ( OGP) has been synthesized through Fmoc solid phase synthesis procedure. The purity of synthetic OGP ( sOGP) is over 98.6% identified by HPLC, the amino acid sequence and electro-spray mass spectroscopy are consistent with theoretical values.

Fmoc法固相合成成骨生长肽（sOGP），HPLC鉴定纯度大于98.6%，质谱测定，分子量1523.5kD，与理论分子量相符，N端全序列测定结果正确。

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The mass distribution of the products for thermal reaction at surface temperature range of 300K-750K has also been studied by a chopped molecular beam and quadrupole mass spectroscopy using Lock& in amplifier technique.

同时以调制分子束技术和锁相放大探测方法研究了在表面温度300K-800K范围内Cl2和Inp（100）热反应产物的质量分布。

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The hydrofluoric acid-hydrochloric acid-nitric acid-vitriol ( HF-HCl-HNO_3-H_2SO_4) system was used for the determination of 15 rare earth elements in the ash of plant by inductively coupled plasma mass spectroscopy ( ICP-MS).

采用高温灰化植物样本，氢氟酸盐酸硝酸硫酸一次溶解植物灰分，电感耦合等离子体质谱法（ICP MS）同时测定15种稀土元素。

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CO Displacement Desorption in Vacuum and Its Influence on the Mass Spectroscopy

真空系统中CO的置换解吸及对质谱分析的影响

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The thermogravimetric characteristics of Shenmu coal and its macerals were systematically investigated using TG-151 thermobalance, and the evolved pyrolysis gases were on-line analyzed using mass spectroscopy.

在TG-151热天平上考察了神木煤显微组分的热重特性，并用质谱对热解气体进行了在线检测分析。

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The ultraviolet ( 355 nm) laser induced desorption of CCl4 cryogenic film on quartz surface at 130 K is investigated using time-resolved quadrupole mass spectroscopy.

本文研究了CCl4低温（130K）吸附于石英表面上经紫外激光辐照后引起的脱附过程。

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