质谱

Abstract Secondary ion mass spectrometry(SIMS) is more sensitive than other surface microregion analysis instrumentals.

摘要 二次离子 ( SIMS)比其他表面微区析方法更灵敏。

The mass spectra of ureide-type noncyclic polyethers with 2(3H)-benzoxazolone as end groups were studies.

研2（3H）-苯并唑酮为端基、具有酰脲结构的非环多醚化合物的。

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

利用基辅助激光解吸电离飞行时间法析三苯胺偶氮化合物。

Objective:To develop a GC-MS approach for the determination of tripropyltin(TPrT),tributyltin(TBT) and triphenyltin(TPhT) in fish.

建立水产品中三丙基锡、三丁基锡和三苯基锡的气相色-(GC-MS)析方法。

The deleterious ingredients in gas emission of sculpturing organic glass were studied,using gas chromatography-mass spectrometry coupled with 3-step preconcentrator.

研3阶段预浓缩气相色-法检测有机玻璃在雕刻过程中排放的有害气体的成。

Besides, laser optoacoustic spectroscopy technique and laser mass spectrometry will play more important role in research of internal combustion engine.

另外，激光光声光技术、激光仪等有望在内燃机的研中发挥更大的作用。

Dodecanol abietate succinic anhydride was synthesized from abietic acid.The structures of products were characterized by spectrum of IR，HNMR and MS.

枞酸为起点，合成十二醇酯琥珀酸酐，采用红外光、核磁共振波及对中间产物及终产物进行结构表证。

In this paper ten lactonic crown ethers weresynthesized, of which seven were new compounds.Theirstructures were confirmed by EA,IR,1HNMR andMS analysis.

合成10个内酯型冠醚化合物，其中7个冠醚是新化合物，其结构均由元素析，及红外、核磁、析证实。

The controls were homeochronous inpatients with affective disorder and normal individuals.lsoprene breath levels were measured by gas chromatography combined with mass spectroscopy(GC-MS).

用气相色一联用仪检测其呼出气体中异戊二烯的浓度。

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，测定12个金属血卟啉络合物的解吸化学电离。

Based on these results and the ESI-MS data, the mechanism of sulfoxidation was proposed to be intramolecular nucleophilic oxygen transfer to a coordinated sulfide.

基于这些结果和电喷雾(ESI-MS)数据，亚砜化反应的机理推测为子内亲核氧转移到络合的硫醚底物上。

RESULTS The chlortetracycline's epimer, tetracycline and its epimer, as impurities in chlortetracycline have been determined by the liquid chromatogram and its first order mass spectrum.

结果得到金霉素样品液相色图及液相色峰对应的一级图。对图进行析归纳,推测金霉素样品中含有四环素、差向异构四环素和差向异构金霉素杂。

The oils were analyzed by GC-MS and percentages were obtained by normalized peak areas, where main components are nootkatone, D-limonene, osthole, cis-linaloloxide, furfural, and trans.

用气相色-(GC-MS)联用技术析,鉴定出主要成为圆柚酮、D-柠檬烯、王草素、顺式-芳樟醇氧化物、糠醛、反式-芳樟醇氧化物。

Uranium isotope abundance ratio has been measured by total sample evaporation and signal integration,and a thermal surface ionization mass sepctrometry equipped with multicollector has been used.

采用全蒸发技术、离子流强度积的方式,用多接收器热表面电离计测量铀同位素丰度。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

异丙醇为溶剂,壬醇为内标,采用气相色-法析卷烟烟气总粒相物中的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。

In this review,we described the recent development of mass spectrometry techniques for the study of peptidase structure and function in the central nerve system of Aplysia and other mollusks.

本文海兔等软体动物为素材,综述近年来采用和高效液相色技术研中枢神经系统多肽酶结构与功能的进展。