同位素质谱与无机质谱分析

本文是《分析试验室》定期评述中“无机质谱分析”课题的第二篇评述文章,它增加了同位素质谱分析的内容,故将题目改为现今题目,它综述了1985年～1990年间同位素质谱和无机质谱的发展概况。其中包括同位素示踪、同位素稀释、火花源质谱、二次离子质谱、等离子体质谱等。内容以国内为主,也收集了少量代表学科先进水平的外国文献。     

同位素质谱和无机质谱

本文是《分析试验室》定期评述中“同位素质谱和无机质谱”的第四篇评述，评述的范围是１９９４年１１月至１９９６年１０月我国气体同位素质谱，热电离同位素质谱，加速器质谱，火花源质谱，电感耦合等离子体质谱，辉光放电质谱，同位素稀释质谱，二次离子质谱，激光共振电离子飞行时间质谱，电子探针，质子探针，激光探针和它们在地学，核科学，环境科学，材料学，计理学，医学和生命科学中的应用，引用文献１４９篇。     

同位素质谱和无机质谱

本文是《分析试验室》定期评述中“同位素质谱和无机质谱”的第三次评述，评述的范围是１９９２年１１月至１９９４年１０月我国同位素质谱和无机质谱的进展。内容包括同位素质谱，同位素稀释质谱，二次离子质谱，离子探针，电感耦合等离子体质谱，激光电离质谱，加速器质谱、火花源质谱和它们在同位素地质年代学、同位素地球化学、核科学、农业、医学、环境学、计量学等学科中的应用。引用文献２５９篇．     

痕量钒的分析进展

综述近年来测定痕量钒的主要方法,包括光度法如常规光度法、流动注射光度法、催化动力学光度法、萃取光度法、导数光度法以及原子吸收法、荧光法、交流示波极谱法、催化动力学离子选择电极法和流动注射化学发光法等。     

固体无机样品的激光等离子体质谱分析

激光等离子体质谱是一种新颖的质谱分析手段，具有灵敏度高，分析速度快，分析范围广，分析结果准确性高等优点。本文介绍了在自制的激光离子体源飞行时间质谱计上，有关催化剂，铝箔，活性碳，岩石等固体无机样品的质谱分析结果，显示了激光等离子体质谱的优越性与广泛的应用价值。     

同位素质谱和无机质谱分析

本文与本刊1991年专栏评述衔接,评述了1991～1992年10月间我国同位素质谱和无机质谱分析的情况。包括同位素分析、同位素示踪、同位位素稀释、同位素质谱计研制、火花质谱、二次离子质谱、离子探针、等离子体质谱等。资料来源以国内为主,也收集了少量代表学科先进水平的外国文献。参考文献252篇。     

表面热电离质谱的进展

本文评述了表面热电离质谱（ＴＩＭＳ），特别是负离子质谱（ＮＴＩ－ＭＳ）对非金属和具有高电离电位的金属元素的同位素测定的进展，引用文献３４篇。     

高纯Tb4O7中痕量杂质元素的火花源质谱测定

本文采用同位素稀释和相对灵敏度因子法相结合，定量分析了高纯Ｔｂ４Ｏ７中的２０多种微量元素的含量，测定检测限０．０ｘ－０．００ｘμｇ／ｇ，大多数元素的相对标准偏差在３０％以内，用同位素稀释法分析了Ｃｕ，Ｂａ，Ｄｙ三元素，其相对标准偏差均在１０％以内。     

毛细管电泳-电感耦合等离子体质谱在痕量元素形态分析中的应用

叙述了元素形态分析的目的和意义以及发展概况，并在此基础上着重叙述了近年来毛细管电泳(CE)与电感耦合等离子体质谱(ICP-MS)联用技术在痕量元素形态分析上的应用，包括该联用技术的关键CE与ICP-MS接口的不同设计，影响CE分离分辨率及分析灵敏度的主要因素。对这种分析技术在元素形态分析上应用的潜力和限制以及发展趋势作了讨论。     

Investigation of Inorganic Systems at High Temperature by Mass Spectrometry

High-temperature mass spectrometry (hitherto at temperatures between 1000 and 2500 °K and at pressures between 10^?3 and 10^?12 atm) has already made possible the identification of many previously unknown and unpredicted diatomic and polyatomic molecular species. The present paper deals with the investigation of many oxides, of halides, and of carbon molecules and intermetallic molecules. An apparatus for the production and investigation of molecular beams is described. Knudsen cells permit the production of molecular beams under equilibrium conditions; in special cases the “double-oven” type of Knudsen cell is used. Thermodynamic and kinetic quantities such as ΔH values, dissociation energies, and ionization cross sections of the species investigated are given.     

色谱-飞行时间质谱联用技术的特点及其在食品污染物分析研究中的应用

飞行时间质谱技术(TOF-MS)是一种新型质谱技术,具有质量范围宽、分辨率和质量测量精度较高、灵敏度高、分析速度快的特点。该文简要介绍了TOF-MS的基本原理和性能特点,并对其在食品中痕量污染物高通量筛查确证及代谢物鉴别分析等方面的应用研究进展进行了总结。     

Chemical Analysis of Inorganic and Organic Surfaces and Thin Films by Static Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS)

By using mass spectrometry to analyze the atomic and molecular secondary ions that are emitted from a solid surface when bombarded with ions, one obtains detailed information about the chemical composition of the surface. A time-of-flight mass spectrometer is especially suitable for the analysis of secondary ions because of its high transmission, high mass resolution, and ability to detect ions of different masses simultaneously. By using a finely focused primary ion beam it is also possible to analyze microareas and generate surface images with a lateral resolution of 0.1 μm or less. Static time-of-flight secondary ion mass spectrometry (TOF-SIMS) allows monolayer imaging and local analysis of monolayers with high sensitivity, a wide mass range, high mass resolution, and high lateral resolution. Besides information on elements and isotopes, the technique yields direct information on the molecular level and can also be used to analyze surface species of high molecular mass that are thermally unstable and cannot be vaporized. The method can be applied to practically all types of materials and sample forms, including insulators in particular. In this article the basic principles of TOF-SIMS are explained, and its analytical capabilities for both large area and imaging applications are illustrated by examples. These include silicon surfaces (both uniform and structured), thermally unstable organic molecules on surfaces, synthetic polymers, and synthetically prepared molecular surface films, particles, and fibers. Emitted neutral particles can also be analyzed by postionization with a laser, and the possibilities of this technique are discussed.     

Sequence Analysis of Polypeptide by Mass Spectrometry

The method described in this work provides a sensitive and fast technique for investigating the primary structure of peptides with molecular weight up to 3340 amu. Usually, the metastable ion kinetic energy spectra (MIKES) and collisional activated decomposition (CAD) spectra provide complementary information for the FAB mass spectra, the MIKES and CAD spectra generally contain high-mass sequence ions.     

Recent Advances in Real-Time Analysis of Electrochemical Reactions by Electrochemical Mass Spectrometry†

Electrochemical mass spectrometry (EC-MS) is a powerful tool to capture and analyze the intermediates and products during electrochemical reactions. This hyphenated technique combines electrochemistry with mass spectrometry using specific apparatuses, which helps researchers study mechanisms of redox reactions by in situ detecting chemical composition changes. Recently, various EC-MS methods have been applied in a series of electrochemical reactions to reveal the mechanisms, mainly in the areas of electrochemical sensors, organic electrochemistry, and electrocatalysis. In this review, we intend to summarize the recent advances in real-time analysis of different types of electrochemical reactions by EC-MS and offer an outlook on the perspectives in these areas.      

质谱技术在糖类结构分析中的应用

综述了电子轰击、化学电离、快原子轰击、电喷雾离子化、基质辅助激光解吸、串联质谱等质谱技术在糖类结构分析中的应用。引用文献共53篇。     

分子间非共价相互作用的质谱分析方法研究进展

总结了各种软电离质谱技术在研究分子间非共价相互作用中的应用及发展,尤其是在生物大分子非共价复合物结构和功能研究方面的进展。