European journal of mass spectrometry (Chichester, England)最新文献_第3页

The second stability region of quadrupole mass filter with square wave shape power supply. 方波供电四极质滤波器的第二稳定区。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-10-01 Epub Date: 2025-09-08 DOI: 10.1177/14690667251371841

A I Ivanov, A N Konenkov, N V Konenkov

引用次数: 0

An analytical approximation for the field in toroidal ion trap mass analysers having circular slits on endcap electrodes. 端盖电极上有圆形狭缝的环形离子阱质量分析器中场的解析近似。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-10-01 Epub Date: 2025-11-10 DOI: 10.1177/14690667251394836

Appala Naidu Kotana, Atanu K Mohanty

{"title":"An analytical approximation for the field in toroidal ion trap mass analysers having circular slits on endcap electrodes.","authors":"Appala Naidu Kotana, Atanu K Mohanty","doi":"10.1177/14690667251394836","DOIUrl":"10.1177/14690667251394836","url":null,"abstract":"In this study, an analytical approximation that can be used to estimate the change in the electric field caused by the introduction of circular slits on endcap electrodes of toroidal ion trap mass analysers will be developed. A theory has been developed to estimate the contribution of circular slits on the electrodes of a toroidal ion trap. In this theory, the first potential due to an arbitrary aperture on an infinite ground plane will be derived. This will be specialised to obtain potential due to a circular slit on an infinite ground plane. The potential due to a circular slit on an infinite ground plane will be used to evaluate the field within the toroidal traps having circular slits. The approximation developed in this paper has been verified on two arbitrarily selected toroidal traps. One of these arbitrary traps has circular-shaped electrodes, and the other trap has asymmetric hyperbolic-shaped electrodes. Fields estimated by this approximation agree well with those obtained using the boundary element method. Additionally, the study reveals an interesting correlation between the secular frequency of ion motion and the width of the circular slit. The secular frequency reduces as the slit width is increased. The reduction in secular frequency is proportional to the square of the slit width.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"147-160"},"PeriodicalIF":0.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145491399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical footprints of sulfur mustard: GC-MS profiling of methylated degradation products. 硫芥的化学足迹：甲基化降解产物的GC-MS分析。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-10-01 Epub Date: 2025-09-26 DOI: 10.1177/14690667251378877

Prachi Thukral, M V Jagadish, Priyanka Yadav, Salvi Jatan, Mayukh Chain, Mukesh K Singh, Shubham Yadav

{"title":"Chemical footprints of sulfur mustard: GC-MS profiling of methylated degradation products.","authors":"Prachi Thukral, M V Jagadish, Priyanka Yadav, Salvi Jatan, Mayukh Chain, Mukesh K Singh, Shubham Yadav","doi":"10.1177/14690667251378877","DOIUrl":"10.1177/14690667251378877","url":null,"abstract":"Sulfur mustard, a Schedule 1 chemical under the Chemical Weapons Convention (CWC), poses a significant threat to human health, animals, plants, and the environment due to its persistent nature. Bis(2-methoxyethylthio)alkanes (compounds 10-14), along with Bis(2-methoxyethyl)sulfide (compound 8) and related disulfide Bis(2-methoxyethyl)disulfide (compound 9), were synthesized and investigated using gas chromatography-mass spectrometry (GC-MS) under both electron ionization (EI) and positive chemical ionization (PCI) conditions. These compounds are structurally analogous to known degradation products of sulfur mustard, such as thiodiglycol and its derivatives, making them of particular interest for environmental analysis and chemical forensics. EI mass spectra revealed consistent fragmentation behavior, including α cleavage and neutral losses. Diagnostic ions at m/z 45 (C₂H₅O+), m/z 59 (C3H7O+), m/z 61 (C2H5S+), and m/z 75 (C3H7S+) were observed across the series. A generalized fragmentation pathway is proposed to support structural elucidation and homologous trend interpretation. PCI with isobutane and ammonia provided molecular ion confirmation via [M+H]+, [M+39]+, and [M+18]+ adducts. Due to their chemical resemblance to vesicant degradation products, these sulfur-containing compounds, along with their comprehensive mass spectral data, contribute to the spectral libraries essential for off-site analysis, substance verification, and participation in official proficiency tests conducted under the framework of the CWC by the Organization for the Prohibition of Chemical Weapons (OPCW).","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"189-197"},"PeriodicalIF":0.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145180914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a liquid chromatography-tandem mass spectrometry method for the analysis of plasma naltrexone and its active metabolite in patients with AUD. 建立AUD患者血浆纳曲酮及其活性代谢物的液相色谱-串联质谱分析方法。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-10-01 Epub Date: 2025-10-03 DOI: 10.1177/14690667251384047

Po-Tsun Shen, Shu Chih Liu, Ming-Chyi Huang, Yu-Li Liu

{"title":"Development of a liquid chromatography-tandem mass spectrometry method for the analysis of plasma naltrexone and its active metabolite in patients with AUD.","authors":"Po-Tsun Shen, Shu Chih Liu, Ming-Chyi Huang, Yu-Li Liu","doi":"10.1177/14690667251384047","DOIUrl":"10.1177/14690667251384047","url":null,"abstract":"Naltrexone, an FDA-approved mu-opioid receptor antagonist for alcohol dependence, requires therapeutic drug monitoring due to its pharmacokinetic variability. This study developed a liquid chromatography-electrospray ionization-tandem mass spectrometry method for accurately quantifying naltrexone and its active metabolite, 6β-naltrexol, using deuterated internal standards (naltrexone-d3 and 6β-naltrexol-d3). Sample preparation involved solid-phase extraction with a Strata-X cartridge followed by elution. Separation was performed on a C18 column with gradient elution at 0.3 mL/min. Detection in dynamic multiple reaction monitoring mode used ion transitions at m/z 342 > 324 for naltrexone and m/z 344 > 161 for 6β-naltrexol. The calibration curves were linear over the range of 0.0152-33.3 ng/mL for naltrexone and 0.410-100. ng/mL for 6β-naltrexol, both with a correlation coefficient of 1.0000 and 0.9998, individually. Intraday and interday variations were below 9.2% for naltrexone and 6.6% for 6β-naltrexol. The recovery was 99.5% for naltrexone and 95.0% for 6β-naltrexol. Applied to plasma samples from five patients receiving 50 mg oral naltrexone daily for 12 weeks, average concentrations were 3.30 ± 4.40 ng/mL (naltrexone) and 48.5 ± 23.4 ng/mL (6β-naltrexol). The developed assay method effectively quantifies naltrexone and its metabolite in alcohol-dependent patients in Taiwan.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"161-168"},"PeriodicalIF":0.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Liquid chromatography-tandem mass spectrometry method for quantification of ertugliflozin in human plasma: Application to disposition kinetics. 液相色谱-串联质谱法定量人血浆中厄图格列净：在处置动力学中的应用。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-06-01 Epub Date: 2025-07-15 DOI: 10.1177/14690667251359789

Viritha Bezawada, Padma Mogili, Sireesha Dodda, Srinivasa Rao Polagani

{"title":"Liquid chromatography-tandem mass spectrometry method for quantification of ertugliflozin in human plasma: Application to disposition kinetics.","authors":"Viritha Bezawada, Padma Mogili, Sireesha Dodda, Srinivasa Rao Polagani","doi":"10.1177/14690667251359789","DOIUrl":"10.1177/14690667251359789","url":null,"abstract":"A high-performance liquid chromatography-tandem mass spectrometry method has been developed for the quantification of ertugliflozin in human plasma, employing ertugliflozin D5 as the internal standard. Methyl tertiary butyl ether-based liquid-liquid extraction technique was employed, followed by chromatographic separation on Kromasil-C18 (100 × 4.6 mm, 5 µm) column using a mixture of methanol and 10 mM ammonium formate buffer (80:20, v/v) as the mobile phase at a flow rate of 1 mL/min. The mass transitions were observed from m/z 437.4 to 329.2 for ertugliflozin and from m/z 442.2 to 334.3 for ertugliflozin D5 by multiple reaction monitoring in a positive ion electro spray ionization source. The linearity was established in the concentration range of 1-500 ng/mL, with the correlation coefficient, r2 > 0.99. Validation of the method was performed as per US FDA guidelines, and the results were found well within the acceptance limits. The method was applied successfully for the pharmacokinetic study of ertugliflozin 15 mg after a single oral dose under fasting conditions in healthy male volunteers. The Cmax and tmax values obtained were 288.28 ng/mL and 1.32 h, respectively. Authentication of the results was further done by the incurred sample reanalysis.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"87-93"},"PeriodicalIF":0.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144639495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of kinetic characteristics of thermal desorption of cocaine by mass-spectrometric method of surface ionization. 表面电离质谱法测定可卡因热解吸动力学特性。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-06-01 Epub Date: 2025-07-11 DOI: 10.1177/14690667251358340

Ganiboy T Rakhmanov, Tursunali S Kholikov, Azim Sh Radjabov, Saida S Iskhakova, Dilshadbek T Usmanov

{"title":"Determination of kinetic characteristics of thermal desorption of cocaine by mass-spectrometric method of surface ionization.","authors":"Ganiboy T Rakhmanov, Tursunali S Kholikov, Azim Sh Radjabov, Saida S Iskhakova, Dilshadbek T Usmanov","doi":"10.1177/14690667251358340","DOIUrl":"10.1177/14690667251358340","url":null,"abstract":"The adsorption and surface ionization of cocaine molecules C17H21NO4 (M: 303 Da) on the surface of oxidized tungsten was studied using the non-stationary voltage modulation method in a high-vacuum mass spectrometric setup employing a \"black chamber,\" all the walls of which are cooled with liquid nitrogen. The activation energy Е+ and Е0 of thermal desorption were determined, as well as pre-exponential factors in the continuity equation for the radicals C12H8ON+ and C12H8ON (m/z 182) during the dissociation of cocaine molecules with a break (C-C1)β bonds with the formation of desorbing radicals by surface ionization on the surface of oxidized tungsten WxOy. The results of determining the coefficient of surface ionization, the heat of sublimation, and assessing the ionization potentials of these radicals are presented, and also determined from thermal desorption spectra of the activation energy of thermal desorption of the resulting ions in the air atmosphere.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"109-114"},"PeriodicalIF":0.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144610946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gas chromatography-mass spectrometry bioactive compounds profiling, potential of microbial resistance, anti-inflammatory, and cytotoxic of leaf extracts from Celtis tetrandra Roxb. 气相色谱-质谱法分析芫荽叶提取物的生物活性化合物、微生物耐药、抗炎和细胞毒性。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-06-01 Epub Date: 2025-06-03 DOI: 10.1177/14690667251346782

Ayesha Arshad, Shagufta Saeed, Muhammad Tayyab, Quratulain Maqsood, Tahir Mehmood

{"title":"Gas chromatography-mass spectrometry bioactive compounds profiling, potential of microbial resistance, anti-inflammatory, and cytotoxic of leaf extracts from Celtis tetrandra Roxb.","authors":"Ayesha Arshad, Shagufta Saeed, Muhammad Tayyab, Quratulain Maqsood, Tahir Mehmood","doi":"10.1177/14690667251346782","DOIUrl":"10.1177/14690667251346782","url":null,"abstract":"The rapid increase in incidences of antibiotic resistance, as well as the severity of side effects associated with the synthetic drugs, have directed the researchers to focus on the natural reservoirs as an alternative to the available drugs. The aim of this study was to evaluate the antimicrobial, anti-inflammatory, cytotoxicity assay, and gas chromatography-mass spectrometry (GC-MS) profiling potential of C. tetrandra leaf extracts. Aqueous and ethanolic extract of the leaf was prepared by the maceration process. The anti-microbial potential by disc diffusion method was estimated against B. subtilis, S. aureus, E. coli, and S. typhi. Ethanolic extract was more effective with the zone of inhibition of 18.32 ± 0.012 mm and 12.97 ± 0.02 mm against S. aureus and E. coli, respectively. Aqueous extract did not show any results against S. typhi and B. subtilis. Cytotoxicity assay on Vero cells assured the safety of the extract with IC50 920.45 μg/mL. In vivo anti-inflammatory potential was evaluated by the carrageenan-induced rat paw edema. Edema size was measured by digital Vernier caliper. The maximum paw inhibition (40.4%) was observed in the group treated with 500 mg/kg of ethanolic extract. There was a significant decrease in the level of inflammatory biomarkers such as C-reactive protein and interleukin-6, and hematological parameters. GC-MS of ethanolic extract identified the six major bioactive compound classes, including phytol, aliphatic alcohol, flavonol, sterols, and triterpenes.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"94-103"},"PeriodicalIF":0.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144210633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Delivery of micro- and nanoparticles from solutions into a linear quadrupole trap using the paper spray method. 用纸喷雾法将微粒子和纳米粒子从溶液中输送到线性四极阱中。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-06-01 Epub Date: 2025-06-12 DOI: 10.1177/14690667251350268

M S Semynin, S S Rudyi, A Y Dubavik, A V Gavenchuk, A V Ivanov, D P Shcherbinin

引用次数: 0

Mass spectrometric analysis of fullerenes and dialane cationic clusters: Revealing magic sizes and stability trends. 富勒烯和二烷阳离子团簇的质谱分析：揭示神奇的大小和稳定性趋势。

IF 0.8

European journal of mass spectrometry (Chichester, England) Pub Date : 2025-06-01 Epub Date: 2025-07-10 DOI: 10.1177/14690667251358149

Namra Sarosh, Bilal Rasul

{"title":"Mass spectrometric analysis of fullerenes and dialane cationic clusters: Revealing magic sizes and stability trends.","authors":"Namra Sarosh, Bilal Rasul","doi":"10.1177/14690667251358149","DOIUrl":"10.1177/14690667251358149","url":null,"abstract":"The stability of gas-phase clusters primarily depends on their size, with magic numbers exhibiting exceptional conformal stability due to symmetric or closed-shell configurations. This phase is ideal for analyzing intrinsic properties, that is, as cluster size increases, their behavior transitions from molecular to bulk-like. The characterization of these clusters has been facilitated by advancements in mass spectrometry, which has also played a crucial role in revealing the existence of magic numbers. In this study, helium nanodroplets-doped fullerenes C60 are electron-impact ionized along with dialane Al2H6 using high-resolution mass spectrometry to analyze various abundance distributions, revealing significant local irregularities (anomalies). Mass spectra of dialane-tagged C60+, that is, [C60]m[Al2H6]n+, display anomalies at n = 4 and n = 8 across nearly all C60 cluster sizes, indicating localized irregularities. Peaks other than these magic numbers exhibit antimagic behavior. These results highlight specific mass-to-charge ratios in cationic clusters, advancing our comprehension of these complex molecules and their potential applications in nanotechnology and chemistry.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"115-123"},"PeriodicalIF":0.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144602786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mass-spectrometric studies of kinetic characteristics of codeine molecule thermodesorption by non-stationary surface ionization method. 非固定表面电离法对可待因分子热解吸动力学特性的质谱研究。

IF 1.3

European journal of mass spectrometry (Chichester, England) Pub Date : 2022-10-01 Epub Date: 2022-11-01 DOI: 10.1177/14690667221136069

G T Rakhmanov, D T Usmanov

{"title":"Mass-spectrometric studies of kinetic characteristics of codeine molecule thermodesorption by non-stationary surface ionization method.","authors":"G T Rakhmanov, D T Usmanov","doi":"10.1177/14690667221136069","DOIUrl":"https://doi.org/10.1177/14690667221136069","url":null,"abstract":"The adsorption and surface ionization of codeine molecules С18H21O3N (m/z 299) on the surface of oxidized tungsten have been studied by a non-stationary method of voltage modulation under the same experimental conditions with a high-vacuum mass-spectrometric setup using a \"black chamber\" all walls of which are cooled with liquid nitrogen. For the codeine molecule dissociation with the <math><mo>(</mo><mrow><mrow><mi>C</mi></mrow><mo>-</mo><msub><mrow><mi>C</mi></mrow><mn>1</mn></msub></mrow><msub><mo>)</mo><mrow><mi>β</mi></mrow></msub></math> bond breaking and formation of ionizable radicals, the rate constants K+ and K0, the activation energy Е+ and Е0 of thermodesorption, and the pre-exponential factors in the continuity equation for the radicals C9H7N+CH3 (m/z 144) have been defined by surface ionization on the surface of oxidized tungsten WxOy. The results of determining the surface ionization coefficient and estimates of the ionization potentials of these radicals have been presented.","PeriodicalId":520618,"journal":{"name":"European journal of mass spectrometry (Chichester, England)","volume":" ","pages":"127-131"},"PeriodicalIF":1.3,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40460477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0