Search Results - "Dilshadbek Usmanov"
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Flash desorption of low‐volatility compounds deposited on a heated solid substrate (90°C) by dripping liquid methanol
Published in Rapid communications in mass spectrometry (15-12-2020)“…Rationale Desorption of low‐volatility compounds deposited on a solid substrate by dripping a methanol drop was explored. Methods Low‐volatility compounds such…”
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Studies of the Organic Molecules Dissociative Surface Ionization in the Mass-Spectrometric Surface Ionization Method
Published in Mass spectrometry letters (30-03-2024)“…An improved voltage modulation method (VMM) was used to control the heat release and adsorption properties of the adsorbent. In this work, the voltage and flux…”
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How do cocaine and morphine in methanol solution desorb at the last moment of Leidenfrost phenomenon-assisted thermal desorption?
Published in Rapid communications in mass spectrometry (15-01-2025)“…The objective of the present study is to investigate desorption of low-volatility analytes in Leidenfrost phenomenon-assisted thermal desorption (LPTD). LPTD…”
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Studies of the Organic Molecules Dissociative Surface Ionization in the Mass-Spectrometric Surface Ionization Method
Published in Mass spectrometry letters (01-03-2024)“…An improved voltage modulation method (VMM) was used to control the heat release and adsorption properties of the adsorbent. In this work, the voltage and flux…”
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5
Discontinuous atmospheric pressure interface for mass spectrometry using a solenoid pulse valve
Published in Rapid communications in mass spectrometry (30-08-2016)“…Rationale For the development of on‐site mass spectrometry for security and safety, point‐of‐care analysis, etc., the gas volume introduced into the vacuum…”
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Dipping probe electrospray ionization/mass spectrometry for direct on-site and low-invasive food analysis
Published in Food chemistry (15-09-2018)“…•Food analysis by dipping probe electrospray ionization.•Low-invasive food analysis with high detection sensitivity.•Remote-sampling mass spectrometry. Rapid,…”
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Flash Desorption/Mass Spectrometry for the Analysis of Less- and Nonvolatile Samples Using a Linearly Driven Heated Metal Filament
Published in Journal of the American Society for Mass Spectrometry (01-11-2013)“…In this paper, the important issue of the desorption of less- and nonvolatile compounds with minimal sample decomposition in ambient mass spectrometry is…”
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Non-proximate mass spectrometry using a heated 1-m long PTFE tube and an air-tight APCI ion source
Published in Analytica chimica acta (22-06-2017)“…Direct and rapid trace-level gas analysis is highly needed in various fields such as safety and security, quality control, food analysis, and forensic…”
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Detection of explosives using a hollow cathode discharge ion source
Published in Rapid communications in mass spectrometry (15-04-2015)“…Rationale For public security and safety, it is highly desirable to develop an ion source for the detection of explosives that is highly sensitive, compact in…”
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Low‐pressure barrier discharge ion source using air as a carrier gas and its application to the analysis of drugs and explosives
Published in Journal of mass spectrometry. (01-02-2016)“…In this work, a low‐pressure air dielectric‐barrier discharge (DBD) ion source using a capillary with the inner diameter of 0.115 and 12 mm long applicable to…”
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Desorption Mass Spectrometry for Nonvolatile Compounds Using an Ultrasonic Cutter
Published in Journal of the American Society for Mass Spectrometry (01-07-2014)“…In this work, desorption of nonvolatile analytes induced by friction was studied. The nonvolatile compounds deposited on the perfluoroalkoxy substrate were…”
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Remote sampling mass spectrometry for dry samples: Sheath‐flow probe electrospray ionization (PESI) using a gel‐loading tip inserted with an acupuncture needle
Published in Rapid communications in mass spectrometry (15-03-2018)“…Rationale Probe electrospray ionization (PESI) is only applicable to liquid or wet samples. In this study, a sheath‐flow PESI method for remote sampling mass…”
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Mass spectrometric monitoring of oxidation of aliphatic C6-C8 hydrocarbons and ethanol in low pressure oxygen and air plasmas
Published in Journal of mass spectrometry. (01-12-2016)“…Experimental and theoretical studies on the oxidation of saturated hydrocarbons (n‐hexane, cyclohexane, n‐heptane, n‐octane and isooctane) and ethanol in 28…”
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Probe Electrospray Ionization (PESI) and Its Modified Versions: Dipping PESI (dPESI), Sheath-Flow PESI (sfPESI) and Adjustable sfPESI (ad-sfPESI)
Published in Mass Spectrometry (2020)“…In 2007, probe electrospray ionization/mass spectrometry (PESI/MS) was developed. In this technique, the needle is moved down along a vertical axis and the tip…”
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Electrospray Generated from the Tip-Sealed Fine Glass Capillary Inserted with an Acupuncture Needle Electrode
Published in Journal of the American Society for Mass Spectrometry (01-12-2018)“…In electrospray, excess charges are supplied to a sample solution by the occurrence of electrochemical reactions. Recently, different versions of electrospray,…”
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Nitrogen incorporation in saturated aliphatic C6-C8 hydrocarbons and ethanol in low-pressure nitrogen plasma generated by a hollow cathode discharge ion source
Published in Journal of mass spectrometry. (01-06-2016)“…Ion/molecule reactions of saturated hydrocarbons (n‐hexane, cyclohexane, n‐heptane, n‐octane and isooctane) in 28‐Torr N2 plasma generated by a hollow cathode…”
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Alternating current corona discharge/atmospheric pressure chemical ionization for mass spectrometry
Published in Rapid communications in mass spectrometry (30-12-2013)“…RATIONALE Although alternating current (ac) corona discharge has been widely used in the fields of material science and technology, no reports have been…”
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A novel contrast of the reactions of 2,4,6-trinitrotoluene (TNT) in atmospheric-pressure O2 and N2 plasma: Experimental and theoretical study
Published in International journal of mass spectrometry (01-04-2020)“…Negative-mode ion/molecule reactions of 2,4,6-trinitrotoluene (TNT) generated in atmospheric-pressure O2 and N2 corona discharge plasmas were studied. In the…”
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Negative-mode mass spectrometric study on dc corona, ac corona and dielectric barrier discharge ionization in ambient air containing H2O2, 2,4,6-trinitrotoluene (TNT), and 1,3,5-trinitroperhydro-1,3,5-triazine (RDX)
Published in International journal of mass spectrometry (01-01-2021)“…In this work, a miniature dielectric barrier discharge (m-DBD) ionization source was developed, and a comparative study of dc corona, ac corona and the m-DBD…”
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