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Ionization methods for mass-spectrometric analysis based on mechanical liquid spray by a high-speed gas flow (like Sonic Spray Ionization (SSI)) offer some advantages over other ionization methods. Among these one should mention the absence of electric voltage, radioactive sources and heaters. In this paper we suggest using the Collison nebulizer for solution ionization via mechanical spray. Research...
Completeness of the ion transportation into an analytical path defines the efficiency of ionization analysis techniques. This is of particular importance for atmospheric pressure ionization sources like corona discharge, electrospray, ionization with radioactive ( 3 H, 63 Ni) isotopes that produce nonuniform spatial distribution of sample ions. The available methods of sample ion focusing...
For successful operation of ionization analysis techniques an efficient sampling and sample ion transportation into an analytical path are required. This is of particular importance for atmospheric pressure ionization sources like corona discharge, electrospray, MALDI, ionization with radioactive isotopes ( 3 H, 63 Ni) that produce nonuniform spatial distribution of sample ions. The...
One of the promising techniques of remote gas sampling from the surface or from the inside of an object involves the use of a swirl air stream. The case in which a swirl sampling stream produces a vortex core of a composite swirl is of most interest. But a practical implementation of a vortex sampling faces major problems due to the fact that the majority of the available gas analyzers feature a low...
Detection of drug vapors and volatile products of their decomposition is an important, and sometimes the only way to determine the presence of illegal drug traces at the surface of mail items, documents, hands and banknotes. This paper gives the results of experimental studies on the effect of UV irradiation on the sensitivity of a vapor phase detection of cocaine of different origin by a technology...
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