Discontinuous atmospheric pressure interface

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August undefined, 2024

WebJan 15, 2024 · Miniature mass spectrometers are of an increasing interest for in-situ analyses, and their coupling with the ambient ionization sources is a valid path for direct analysis of complex samples. In this study, a miniature mass spectrometer using discontinuous atmospheric pressure interface was developed with a dual-LIT (linear … WebAbstract The discontinuous atmospheric pressure interface (DAPI) has been developed as a facile means for efficiently introducing ions generated at atmospheric pressure to an ion trap in vacuum [e.g., a rectilinear ion trap (RIT)] for mass analysis.

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WebMar 19, 2024 · Analyte/dopant ion peak intensity ratios in mass spectra could be used for quantitation to improve the quantitative analysis performance of miniature ion trap mass spectrometer equipped with a discontinuous atmospheric pressure interface (DAPI) with the prerequisite that dopant ions and analyte ions could be simultaneously and effectively ... foods court

The discontinuous pressure field near an interface Γ.

WebApr 20, 2024 · Herein, a novel on-demand MS analysis method was developed based on discontinuous ion injection-induced ESI on a miniature MS system. Highly efficient ionization was enabled under low voltages (<300 V) using a discontinuous atmospheric pressure interface. On-demand ionization showed comparable sensitivity with regular … WebAdapted and commercialized Discontinuous Atmospheric Pressure Interface Linear Ion Trap Mass Spectrometer (the project was dropped … WebA systematic investigation of the optimization of M-DAPI was performed. The primary parameters affecting the performance of M-DAPI were optimized and sensitivity and … food scout

Tandem Analysis by a Dual-Trap Miniature Mass Spectrometer

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WebNov 24, 2024 · Discontinuous atmospheric pressure interface (DAPI) consisting of a pinch valve, a silicone tube, and two metal capillaries has been widely used in miniature mass spectrometry. It is … WebFeb 1, 2024 · Here, the concept of continuous sub-atmospheric pressure interface (CSAPI) was proposed and applied to design a miniature ion trap mass spectrometer. Specifically, a sealed ionization chamber is installed outside the sampling interface of a conventional mini CAPI-MS. foodscout richard kägiWebJun 1, 2009 · The discontinuous atmospheric pressure interface (DAPI) [5, 6] allows the transfer of ions, generated at atmospheric pressure, into the miniature mass spectrometer and, hence, direct analysis... food scouting

"WebJun 1, 2009 · Discontinuous atmospheric pressure interfaces (DAPI) are used to match the rate of sample introduction to the pumping capacity of miniature mass spectrometers. … " - Discontinuous atmospheric pressure interface

Discontinuous atmospheric pressure interface

Detection of explosives as negative ions directly from surfaces …

WebJun 1, 2009 · The discontinuous atmospheric pressure interface (DAPI) [5, 6] allows the transfer of ions, generated at atmospheric pressure, into the miniature mass … WebNov 1, 2024 · These instruments adopt different atmospheric pressure interfaces (APIs), which are membrane inlets (MIs), discontinuous atmospheric pressure interface (DAPI) and continuous atmospheric pressure interface (CAPI). This review emphasizes on the mini mass spectrometry (MS) system that can be handheld by one person, but not the …

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WebWhile this interface-tracking family of approaches to multiphase flow simulation has been most popular, notable alternatives emerged too: an MPM formulation was introduced in … WebFeb 17, 2015 · A miniature capillary electrophoresis mass spectrometry (CE/MS) system has been developed in this work. A 100% electrical driven miniaturized CE device was integrated with a miniature MS instrument, which has a discontinuous atmospheric pressure interface (DAPI) for coupling with atmospheric pressure ionization sources.

WebNov 24, 2024 · Discontinuous atmospheric pressure interface (DAPI) consisting of a pinch valve, a silicone tube, and two metal capillaries has been widely used in miniature mass spectrometry. It is interesting that … WebJan 7, 2024 · The pressure conditions are important for performing a variety of ion manipulations in mass spectrometers including ion transfer, ion dissociation and mass analysis. In contrast with lab-scale...

WebJun 1, 2008 · The performance of mass spectrometers with limited pumping capacity is shown to be improved through use of a discontinuous atmospheric pressure … WebWe would like to show you a description here but the site won’t allow us.

WebAug 1, 2010 · The discontinuous atmospheric pressure interface (DAPI) has allowed the transfer of ions from atmospheric pressure ionization sources to an ion trap mass …

WebThe discontinuous atmospheric pressure interface (DAPI) has been developed as a facile means for efficiently introducing ions generated at atmospheric pressure to an ion trap in vacuum, e.g. a ... food scouseWebAug 1, 2024 · The discontinuous atmospheric pressure interface (DAPI) is especially suitable for miniature ion trap devices, because the change of gas pressure during a discontinuous injection can match the operation steps of the trap analyzer [10, 12, 19 ]. food scotts valleyWebDec 5, 2024 · The performance of a miniature mass spectrometer in atmospheric analysis is closely related to the design of its sampling system. In this study, a simplified vacuum electrospray ionization (VESI) source was developed based on a combination of several techniques, including the discontinuous atmospheric pressure interface, direct … food scottsboroWebShort forms to Abbreviate Discontinuous. 3 popular forms of Abbreviation for Discontinuous updated in 2024. Suggest. Discontinuous Abbreviation ... Discontinuous Atmospheric Pressure Interface. Chemistry. DALS. Discontinuous Additional Lung Sound. Bioengineering, Microbiology. Related acronyms and abbreviations. Abbr. electrical engineering jobs in indiaWebApr 2, 2015 · The instrument used in this study was modified from the miniature mass spectrometer with continuous atmospheric pressure interface, which has been developed in our lab and reported in our... food scout schrankerl jobWebMay 24, 2010 · The system was fitted with a discontinuous atmospheric pressure interface to allow external ionization by desorption electrospray ionization (DESI). It was used to identify the explosives 2,4,6-trinitrotoluene (TNT), 2,4,6-trinitrophenyl-N-methylnitramine (Tetryl), and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocane… View on … electrical engineering jobs in jordanWebDec 7, 2024 · Discontinuous atmospheric pressure interface (DAPI), consisting of a pinch valve, a silicone tube, and two metal capillaries, is a common inlet for miniature ion trap mass spectrometers (ITMS). electrical engineering jobs in gauteng