gas chromatography mass spectrometry and gas chromatography olfactometry parameters

... interaction between HPTMs and their binding proteins Five tandem-domainreader proteins (BPTF, CBP, TAF1, TRIM24 and TRIM33) were designed and prepared as the enriched probes, and a group of histone ... several tandem-domain-reader proteins and analyzed their readout of HPTMs peptides and binding nucleoproteins to profile the complicated interactions between combinatorial HPTMs and tandem domains ... proteins and peptides was weak and transient, and it was difficult to detect In general, compared with ITC, MALDI-TOF MS is a more sensitive technology to detect weak and transient interactions, and

Ngày tải lên: 11/05/2020, 10:40

... analytical methods, such as liquid chromatography (LC), gas chromatography (GC) and capillary electrophoresis with nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry (MS) produces a ... compounds), and glucose Individual standard solutions of selected amino acids, glucose, citrate, and MOPS were also used for molecule identification Mass spectrometry Separation and analysis of standard ... identification and metabolic pathway mapping directly from mass spectrometry and using genome restriction A Ranjitha Dhanasekaran1,4, Jon L Pearson1,5, Balasubramanian Ganesan1,2 and Bart C Weimer3*

Ngày tải lên: 02/11/2022, 14:24

... performed by the isotope dilution method and tandem mass spectrometry, using d3-OLP as internal standard [19] The MS/MS spectra of the [M+NH4]+ ions of both OLP and its d3isotopomer displayed a common ... voltage: 3.5 kV; vaporizer and capillary temperature: 370 and 300 °C, respectively; sheath and auxiliary gas at 40 and 20 arbitrary units (a.u.), respectively; The collision gas was Argon used at ... kept at 50, 220, and 10 V relative to ground, respectively 3.2 Analytical methods and materials All the analaytes were analyzed using the isotope dilution assay and MRM tandem mass spectrometry Oleo-pentanedialdehydes

Ngày tải lên: 24/11/2022, 17:43

... Karasek, F W., and Clement, R E Basic Gas Chromatography- Mass Spectrome- try—Principles and Techniques New York: Elsevier, 1991 Linskens, H F., and Jackson, J F., Eds Gas Chromatography/ Mass Spectrometry ... Glish, G L., and McLuckey, S A Mass Spectrometry: Techniques and Applications of Tandem Mass Spectrometry New York: VCH Publishers, 1988 7 For further reading on chemical ionization mass spectrometry, ... McNair, H M Gas chromatography LC-GC, 11(11), 794, 1993 Mass Spectrometry Busch, K L Getting a charge out of mass spectrometry Spectroscopy, 9, 12, 1994, Russell, D H., Ed Experimental Mass Spectrometry

Ngày tải lên: 06/10/2016, 09:25

... OF POLYCYCLIC AROMATIC HYDROCARBONS IN BARBECUED PORK USING QUECHERS EXTRACTION AND GAS CHROMATOGRAPHY – MASS SPECTROMETRY Nguyen Van Phuc1 Ho Chi Minh City University of Food Industry ARTICLE ... and giving a warning for human health MATERIAL AND METHODS Reagents and materials Reagents: A mixture of 16 PAHs (2000 mg.L-1 in hexane and a purity of> 99%) was supplied by Merck (Germany) and ... centrifuge tubes) were washed with soap and water and rinsed with acetone and n-hexane prior to use and between samples Samples: Blank sample was lean pork meat and grilled pork was purchased from

Ngày tải lên: 20/12/2019, 16:39

... OF POLYCYCLIC AROMATIC HYDROCARBONS IN BARBECUED PORK USING QUECHERS EXTRACTION AND GAS CHROMATOGRAPHY – MASS SPECTROMETRY Nguyen Van Phuc1 Ho Chi Minh City University of Food Industry ARTICLE ... and giving a warning for human health MATERIAL AND METHODS Reagents and materials Reagents: A mixture of 16 PAHs (2000 mg.L-1 in hexane and a purity of> 99%) was supplied by Merck (Germany) and ... centrifuge tubes) were washed with soap and water and rinsed with acetone and n-hexane prior to use and between samples Samples: Blank sample was lean pork meat and grilled pork was purchased from

Ngày tải lên: 14/01/2020, 17:37

... OF POLYCYCLIC AROMATIC HYDROCARBONS IN BARBECUED PORK USING QUECHERS EXTRACTION AND GAS CHROMATOGRAPHY – MASS SPECTROMETRY Nguyen Van Phuc1 Ho Chi Minh City University of Food Industry ARTICLE ... pollutants and identified as carcinogenic, mutagenic and teratogenic in humans The goal of this paper was to develop a process to analyze the content of 16 common PAHs in grilled pork by mass spectrometry ... Rugged and Safe) extraction and GC-MS in SIM mode analysis allowed for quantification of 16 PAHs in very small concentrations (10 - 100ppb) with recoveries of 83.8 to 113.4% on spiked sample and

Ngày tải lên: 09/02/2020, 09:07

... OF POLYCYCLIC AROMATIC HYDROCARBONS IN BARBECUED PORK USING QUECHERS EXTRACTION AND GAS CHROMATOGRAPHY – MASS SPECTROMETRY Nguyen Van Phuc1 Ho Chi Minh City University of Food Industry ARTICLE ... and giving a warning for human health MATERIAL AND METHODS Reagents and materials Reagents: A mixture of 16 PAHs (2000 mg.L-1 in hexane and a purity of> 99%) was supplied by Merck (Germany) and ... centrifuge tubes) were washed with soap and water and rinsed with acetone and n-hexane prior to use and between samples Samples: Blank sample was lean pork meat and grilled pork was purchased from

Ngày tải lên: 02/03/2020, 16:02

... OF POLYCYCLIC AROMATIC HYDROCARBONS IN BARBECUED PORK USING QUECHERS EXTRACTION AND GAS CHROMATOGRAPHY – MASS SPECTROMETRY Nguyen Van Phuc1 Ho Chi Minh City University of Food Industry ARTICLE ... and giving a warning for human health MATERIAL AND METHODS Reagents and materials Reagents: A mixture of 16 PAHs (2000 mg.L-1 in hexane and a purity of> 99%) was supplied by Merck (Germany) and ... centrifuge tubes) were washed with soap and water and rinsed with acetone and n-hexane prior to use and between samples Samples: Blank sample was lean pork meat and grilled pork was purchased from

Ngày tải lên: 01/05/2021, 11:19

... m/z Fig EI? ?mass and EI–tandem mass spectra of ClNP1EO and ClNP1EC as the precursor ions Fig shows the mass spectra of EI–MS and EI–MS–MS under the optimum CID conditions for ClNP1EO and ClNP1EC ... h Results and discussion 3.1 Mass and tandem mass spectra 2.4 GC–MS analysis The GC–MS analysis was done on a Varian 3800 gas chromatograph coupled with a Varian Saturn 2000 ion-trap mass spectrometer ... chromatography? ? ?mass spectrometry (GC–MS) [10–16] and liquid chromatography? ? ?mass spectrometry (LC–MS) [7,8,17–20] have been shown to be efficient for the determination of alkylphenol polyethoxylates and

Ngày tải lên: 18/10/2022, 15:41

... the evaluation of their quality and their safety and for the understanding of their sensory properties [3,5,6] One-dimensional gas chromatography hyphenated to a mass spectrometer (GC-MS) or to ... two-dimensional gas chromatography (GC × GC) coupled to mass spectrometry (MS) Sample preparation of the volatile compounds, important for the organoleptic characteristics of different whiskeys and their ... profile of whiskey samples using solid-phase microextraction Arrow and comprehensive two-dimensional gas chromatography- mass spectrometry Antonio Ferracane a,b, Natalia Manousi b,c, Peter Q Tranchida

Ngày tải lên: 20/12/2022, 21:29

... desorption and two-dimensional gas chromatography? ? ?mass spectrometry" , J Chromatogr A 1150 (1-2) (2007) 62–69 [21] O Terzic, I Swahn, G Cretu, M Palit, G Mallard, Gas chromatography? ??full scan mass spectrometry ... the field is by mass spectrometry; which has the reputation of being the “gold standard” of chemical identification with high sensitivity and high selectivity Gas chromatographymass spectrometry ... Inficon) and AMDIS protocol RRFs are calculated for GA, GB, GD, GF, and HD using the areas of the CWA (ACWA ) and focusing agent (AFA ) and the ratio of the mass of focusing agent (mFA ) and mass

Ngày tải lên: 31/12/2022, 09:37

... Particles by Gas Chromatography- Mass Spectrometry: A Forensic Approach Shiona Croft 73 $33(1',; Ethyl Centralite standard The Analysis of Unfired Propellant Particles by Gas Chromatography- Mass Spectrometry: ... Analysis of Unfired Propellant Particles by Gas Chromatography- Mass Spectrometry: A Forensic Approach Shiona Croft iv To my Ouma and Grandad, Connie and Gerald Campbell, I wish you could be here ... Lussier and Gagnon [14]: Concentration of DPA and its derivatives as a function of added nitrogen dioxide 37 The Analysis of Unfired Propellant Particles by Gas Chromatography- Mass Spectrometry:

Ngày tải lên: 07/08/2017, 15:46

... detecting and quantifing melamine content in milk powder, pet – food by Gas Chromatography – Mass Spectrometry? ?? Melamine is a nitrogen rich organic compound which has been added to food and feed ... Linked Immunosorbent Assay GC-MS : Gas Chromatography Mass Spectrometry (Sắc ký khí ghép khối phổ) H2SO4dd : Acid sunfuric đậm đặc HPLC : High Performance Liquid Chromatography (Sắc ký lỏng cao ... tích hàm lượng melamine sữa, thức ăn gia súc phương pháp sắc ký khí ghép khối phổ (Gas Chromatography – Mass Spectrometry) ” Melamine hợp chất hữu có hàm lượng đạm cao thêm vào thực phẩm hành vi

Ngày tải lên: 22/07/2018, 01:16

... quantitation parameters obtained by Gas Chromatography – Selected Ion Monitoring – Mass Spectrometry (GC-SIM-MS) Additional file 4: Camphor effects on Phaseolus lunatus A table and a barchart ... Compound recovery from PDMS is achieved either by thermal desorption and on-line transferred to the injector of a Gas Chromatography? ? ?Mass Spectrometry (GC-MS) system, or by liquid extraction with polar ... distribution between GLVs and the terpenoid groups The position of (k) and (o) and the absence of (t) and (u) suggest the non-significant role of terpenoids in MD reaction, unlike the HW and MDOS loading

Ngày tải lên: 26/05/2020, 20:53

... concentrated to 2 mL and filtered through a 0.45μm micropore film prior to GC–MS analysis Gas chromatography/ mass spectrometry GC–MS analysis was performed using an Agilent 7890A gas chromatograph ... Watsom CH (2002) Determination of nicotine and other minor alkaloids in international cigarettes by solid-phase microextraction and gas chromatography/ mass spectrometry Anal Chem 74:4878–4884 Barshick ... with? ?gas chromatography? ? ?mass spectrometry for fast determination of volatile components in jujube (Ziziphus jujuba Mill.) extract Shi‑Hao Sun1,2, Guo‑Bi Chai2, Peng Li2, Jian‑Ping Xie2* and? ?Yue Su1*

Ngày tải lên: 29/05/2020, 12:34

... °CÆmin)1 and to 310 °C at 10 °CÆmin)1 ES-MS Negative-ion ES-MS and CID MS/MS were carried out on a Micromass (Manchester, UK) Q-Tof mass spectrometer Nitrogen was used as desolvation and nebuliser gas ... pattern, sequence, and partial linkages, and assign structural details of each branch (e.g the 3- and 6-branches) Blood group H, Lea/Lex and Leb/Ley determinants, together with type and type chains, ... pattern and sequence analysis of underivatized oligosaccharides by combined MS/MS of singly and doubly charged molecular ions in negative-ion electrospray mass spectrometry J Am Soc Mass Spectrom...

Ngày tải lên: 19/02/2014, 12:20

... cyclotron resonance mass spectrometry: a primer Mass Spectrom Rev 17, 135 56 Smith RD (2000) Evolution of ESI -mass spectrometry and Fourier transform ion cyclotron resonance for proteomics and other biological ... using soft ionization mass spectrometry Int J Mass Spectrom 216, 127 54 Heck AJR & van den Heuvel RHH (2004) Investigation of intact protein complexes by mass spectrometry Mass Spectrom Rev 23, ... University of Technology, Helsinki, Finland) CTX was initially puried using cation-exchange and hydrophobicinteraction chromatography and characterized by SDS PAGE and ESI FT-ICR analyses as described...

Ngày tải lên: 07/03/2014, 17:20

... threshold 441 Present and < Mass 443 High -mass resolution 442 Base peak or >50% of Mass 198 High -mass resolution and sensitivity 443 15-24% of Mass 442 High -mass resolution and isotope ratio All ... peak Low -mass sensitivity 68

Ngày tải lên: 22/03/2014, 14:20

... ghi.Các tín hiệu xử lý chuyển sang phận in lưu kết Process Flow Schematic Sample injection Carrier gas (nitrogen or helium) Long Column (30 m) Detector (flame ionization detector or FID) Air Hydrogen ... parapin, mỡ apiazol, polyetylen Các loại Silicon : polysiloxan – sản phẩm trùng ngưng monome silandiol R2Si(OH)2 Các loại ete, ester : phlatat, sebacat, photphat, suxinat, adipat dạng monome polime ... tìm kết tương ứng) Hoặc sở để đăng ký chất (nếu phép so sánh không tìm kết tương ứng) Hình 2: Mass- spectrum    Trong hình 2, hình ảnh khối cao dodecane Phần nềm GC/MS giống thư viện hình...

Ngày tải lên: 10/08/2014, 17:22