|Intact Protein LC-MS: How to Overcome the Challenges?|
Robert van Ling, Evert-Jan Sneekes, Sebastiaan Dolman, Laurent Rieux, Mauro DePra, Christian Ravnsborg, Dafydd Milton, Remco Swart
Purpose: Facilitate intact protein LC-MS without compromising performance.
Methods: Construct prototypes of integrated column and sprayer dedicated for intact protein separations and compare performance.
Results: Three prototypes have been directly compared and all showed good protein separations, each with their unique area of strength.
|Instant Connect Gas Sampling Valve Module Introducing a New Flexibility in Gas Sampling for GC and GCMS|
Stefano Pelagatti, Paolo Magni, Fausto Pigozzo
Purpose: We present a newly developed gas sampling valve module for the Thermo Scientific™ TRACE™ 1300 Series Gas Chromatograph (GC).
|GC-MS/MS ANALYSIS OF BENZODIAZEPINES USING ANALYTE PROTECTANTS|
Jeremy Matthews, Alex Chen, Flavio Bedini
Purpose: Assess the feasibility of using analyte protectants to improve the analysis of benzodiazepines.
|GC-MS/MS Analysis of Pesticide Residues in Green Tea Extracted by QuEChERS with Acetonitrile as Final Solvent|
Cojocariu C., Morgan P., Silcock P., Pelagatti S., Magni P. and Pigozzo F.
This poster describes the analysis of several challenging pesticides from green tea samples using GC-MS/MS and acetonitrile as final extraction solvent. The compounds analysed are representatives of various classes of pesticides, such as carboxamids, OC, OP, pyrethriods, aromatic, phenylamides.
|Exploring The Benefits Of Automated Unattended Sample Derivatization Prior To Gas Chromatography Analysis|
A. Caruso, M. Santoro, P. Magni, S. Pelagatti, R. Facchetti
Purpose: Exploring the possibility to perform the sample preparation steps necessary for the derivatization of analytes in a fully automated and reliable way by means of the same robotic sampler used for sample injection into the gas chromatograph.
Methods: As an example of application we screened dairy products for melamine and its derivates presence via GC-MS/MS.
Results: The outcome are good and precise results that show how it is possible to reliably automate sample preparation opera
|Determination of Veterinary Drug Residues in Milk by GC/MS and GC/ECD|
Yu Chongtian, Lv Jianxia
Purpose: Develop a rapid, sensitive method for determining amitraz and its metabolites in milk.
Methods: Samples were hydrolyzed in acidic condition and extracted with hexane. After derivativation, the samples were analyzed by GC-ECD or directly by GC-MS.
Results: The results show that GC-MS determination of amitraz and its metabolites is rapid and sensitive.
|Automated, Rapid And Reliable Determination Of Dissolved Gases In Water By Static Headspace – Gas Chromatography|
A. Caruso, M. Santoro, F. Bedini, P. Magni, S. Pelagatti
Purpose: Exploring the possibility to perform a quantitative determination of dissolved gases in water in a reliable and accurate way. Methods: The quantification of dissolved gases is performed by building a calibration curve spiking blank water samples with increasing quantities of saturated water followed by headspace sampling and GC/ FID analysis. Results: The results show good correlation factors and limit of quantification lower than 10ppb for the four gas analyzed.
|Characterization of Antibody-Drug Conjugates by SEC with Combined Light Scattering |
Chris C. Broomell
Drug Antibody Ratio (DAR) is a critical factor to the effective design of antibody-drug conjugates (ADC). This poster presents a method for DAR determination based on SEC-MALS in conjunction with UV absorption and differential refractive index detection.
|GC-MS Comparison of Lavindin Grosso Oil Obtained by Steam Distillation and SFE|
Claudia Worley, Lisa Zona, Susan Sonchik Marine
Oil was extracted from Lavindin Grosso using steam distillation and using supercritical fluid extraction (SFE). Multiple analyses of the same extract demonstrated repeatability of the analytical method. The variability between batches of distillate bracketed the composition obtained by SFE. The differences among the oils could be attributed more to where the lavender was grown than to the extraction method.
|Trace Level Analysis of Perchlorate and Bromate in Various Water Matrices using Suppressed Ion Chromatography|
Dr. Jay Gandhi, DR. Stuart Procter
Bromate and Perchlorate are ubiquitous analytes in various water matrices and analysis in trace level is a challenge
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