Application of mass spectrometry with laser desorption/ionization for studies of lead clusters on surfaces of different types

作者：Goncharova I S^*; Pytskii I S; Buryak A K

来源：Protection of Metals and Physical Chemistry of Surfaces, 2014, 50(6): 723-732.

DOI：10.1134/S2070205114060045

Ionization of model compounds is studied using the example of lead halides with the method of mass spectrometry with surface-activated laser desorption/ionization (SALDI) on surfaces of different types. Clusters of lead halides are determined in a wide range of masses, up to 2 kDa. The dependence of ionization on the concentration, support type, and method of application of model samples is shown. The surface of a fragment of the combustion chamber of a liquid rocket engine is studied using the method of SALDI mass spectrometry. Lead and oxides and chlorides thereof are detected on the surface of a combustion-chamber fragment. It is suggested that peeling of a nickel coating may be caused by the presence of lead clusters at the nickel-bronze interface.

• 出版日期2014-11