Spi tofms
WebA suitcase time-of-flight mass spectrometer (TOFMS) was designed to perform online GIS failure analysis. An RF VUV lamp was used as the photoelectron ion source; the sampling … WebJul 2, 2002 · Consequently, SPI-TOFMS with an excimer light source is a fast detection technique that can be used for online monitoring, for example, in environmental studies or industrial manufacturing processes. In this paper, technology and characteristics of the new excimer light source, as well as the combination with the TOFMS, are presented.
Spi tofms
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WebNov 5, 2024 · Aims and methods: Single-photon ionization time-of-flight mass spectrometry (SPI-TOFMS) is coupled to a linear smoking machine, which allows a comprehensive, … WebNov 1, 2005 · Single-photon ionization (SPI) using vacuum ultraviolet (VUV) light produced by an electron beam pumped rare gas excimer source has been coupled to a compact and mobile time-of-flight mass spectrometer (TOFMS). The novel device enables real-time on-line monitoring of organic trace substances in complex gaseous matrixes down to the …
WebA vacuum ultraviolet lamp based single photon ionization- (SPI-) photoelectron ionization (PEI) portable reflecting time-of-flight mass spectrometer (TOFMS) was designed for online monitoring gas samples. It has a dual mode ionization source: SPI for analyte with ionization energy (IE) below 10.6 eV and PEI for IE higher than 10.6 eV. Two kinds … WebPuff-Resolved Analysis and Selected Quantification of Chemicals in the Gas Phase of E-Cigarettes, Heat-Not-Burn Devices, and Conventional Cigarettes Using Single-Photon Ionization Time-of-Flight...
WebMay 1, 2009 · SPI-TOFMS is a modern analytical technique, which enables the simultaneous analysis of a large number of organic species in complex gas mixtures in real time. The paper is a summary of a PhD thesis (1) and seven research articles, which were recently published in various scientific journals (2-8). Consequently, more detailed information on ...
WebAug 24, 2024 · This research indicates that the SPI-TOFMS can rapidly and accurately conduct online monitoring of VOCs in industrial development zones. In addition, it has …
WebJun 1, 2024 · The SPI-TOFMS comprises a membrane introduction unit, vacuum unit, SPI source, ion transport unit, and TOFMS (Fig. S1 (b)). A dimethylsiloxane (PDMS) membrane was used to concentrate the VOCs, and vacuum ultraviolet light (10.6 eV) for ionization was generated using a krypton lamp. tissot seastar 1000 dive watchWebDec 21, 2024 · In initial studies on tobacco, Adam et al. [ 15] showed that, coupled with statistical analysis, SPI time-of-flight MS (TOFMS) could differentiate between mainstream smoke samples generated from the three major types of … tissot seastar 1000 powermatic 80 greenWebJan 15, 2013 · TOFMS is widely used in on-line monitoring because of its real-time response, excellent sensitivity and high resolution. The main advantage of SPI method is the … tissot seastar 1000 powermatic 80 indiaWebMar 21, 2007 · The SPI-TOFMS was connected to a smoking machine, and 10 cigarettes were smoked under defined smoking conditions. A total of 41 detected mass signals could be clearly assigned to smoke constituents (e.g., unsaturated hydrocarbons, aromatic species, sulfurous compounds, and nitrogen-containing substances). tissot seastar 1000 powermatic 80 braceletWebDec 24, 2004 · REMPI– and SPI–TOFMS have also been used to characterise pyrolytic processes in the laboratory [12, 13]. The first real-world application of gas-phase laser ionisation mass spectrometry was the fast characterisation of pollutants to the ppmv-/ppbv-level within the exhaust gases of internal combustion engines in 1993 . Single-stroke … tissot seastar 1000 powermatic 80 testWebAug 24, 2024 · The single-photon ionization time-of-flight mass spectrometer (SPI-TOFMS), which has high sensitivity, high accuracy, and a short response time, is effective for the real-time monitoring of volatile organic compounds (VOCs). In this study, the theory and structural composition of the SPI-TOFMS are described. Its detection limit can reach … tissot seastar 1000 powermatic 80 silicumWebApr 10, 2012 · The VUV-SPI-TOFMS measured composition and emission profiles of many hydrocarbons, including aliphatics and aromatics, in vehicle exhaust simultaneously with real time response. Download to read the full article text References R. Atkinson, Atmos. Environ., 2000, 34, 2063. Article CAS Google Scholar tissot seastar 1000 powermatic 80 lug to lug