质谱

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

摘要 二次离子质 ( SIMS)比其他表面微区分析方法更灵敏。

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

研究了以2（3H）-苯并唑酮为端基、具有酰脲结构的非环多醚化合物的质。

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

利用基质辅助激解吸电离飞行时间质法分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.

建立水产品三丙基锡、三丁基锡和三苯基锡的气相色-质(GC-MS)分析方法。

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

研究了3阶段预浓缩气相色-质法检测有机玻璃在雕刻过放的有害气体的成。

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

另外，激声术、激质仪等有望在内燃机的研究发挥更大的作用。

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

以枞酸为起点，合成了十二醇酯琥珀酸酐，采用红外、核磁共振波及质对间产物及终产物进行了结构表证。

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

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

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).

用气相色一质联用仪检测其呼出气体异戊二烯的浓度。

Desorption chemical ionization mass spectrometry of twelve metallohematoporphyrin complexes has been investigated under DEP condition using mixture of tetramethylsilane and methane as regent gas.

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

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质(ESI-MS)数据，亚砜化反应的机理推测为分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以及液相色峰对应的一级质图。对图进行分析归纳,推测金霉素样品含有四环素、差向异构四环素和差向异构金霉素杂质分。

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-质(GC-MS)联用术分析,鉴定出主要成分为圆柚酮、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.

采用全蒸发术、离子流强度积分的方式,用多接收器热表面电离质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.

以异丙醇为溶剂,壬醇为内标,采用气相色-质法分析了卷烟烟气总粒相物的游离乙酸,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.

本文以海兔等软体动物为素材,综述近年来采用质和高效液相色术研究枢神经系统多肽酶结构与功能的进展。