Recent Articles in Separation science - Articles and Application notes
Malvern team presents May 22, 2012Malvern Instruments light scattering specialists Dr Ana Morfesis and Dr Ulf Nobbmann, will present a poster on ‘Nanoparticle characterization by light scattering' as part of the 86th ACS Colloid and Surface Science Symposium being held at the University of Baltimore in Maryland, USA, June 10-13, 2012. Their poster will be displayed from 5.30 until 7.30 pm on Monday June 11 in a session held in the exhibition area, where delegates will also be able to visit the Malvern booth to find out more about the company's full range of systems for nanoparticle characterization, including the market leading Zetasizer Nano.
Read MoreDetermination of Ginsenosides in Panax Ginseng - New method announced by Thermo Fisher ScientificMay 15, 2012Thermo Fisher Scientific is pleased to announce a new method that uses the Thermo Scientific Dionex Corona CAD Charged Aerosol Detector to provide a reliable alternative to low-wavelength UV detection. Customer Application Note (CAN) 112: Determination of Ginsenosides inPanax ginseng by HPLC-CAD demonstrates that charged aerosol detection does not overrespond to strong chromophores, thereby reducing interferences. Baseline slopes are not as pronounced or as variable, making peak area determinations more reliable...
Read MoreAnalysis of Organic Acids in WastewaterMay 14, 2012Thermo Fisher Scientific is pleased to announce a new combined method for the accurate determination of organic acids in a wastewater sample. Application Note 291: Determination of Organic Acids in Wastewater Using Ion-Exclusion Chromatography and On-Line Carbonate Removaldemonstrates that ion-exclusion chromatography excludes the inorganic anions present in the sample. A Thermo Scientific Dionex Carbonate Removal Device (CRD 200) is also needed to remove carbonate on line. Inorganic anions and carbonate can interfere when determining organic acids in wastewater using anion-exchange chromatography...
Read MorePurdue University researchers use nanoscale IR spectroscopy via AFM-IR to provide key insights into drug-polymer blendsMay 11, 2012Two new papers are going to press featuring the use of Anasys Instruments' nanoIRTM system by Professor Lynne S. Taylor's group in the Department of Industrial and Physical Pharmacy at Purdue University. In each study, miscibility of pharmaceutically relevant blends was examined and specific sub-micrometer-sized domains characterized using standard atomic force microscopy (AFM) and nanoscale Infrared spectroscopy (AFM-IR)...
Read MoreNew Malvern download with detailed Zetasizer specifications helps users match system with applicationMay 9, 2012In line with a policy of continuous improvement, Malvern Instruments has reviewed, verified and published updated specifications for the Zetasizer series of dynamic light scattering (DLS) particle characterization systems, all fully backed by measurements on real samples. Full updated specification details are available online...
Read MoreAnalysis of Carbohydrates in Coffee in 10 minsMay 2, 2012Thermo Fisher Scientific is pleased to announce a new approach using high-performance anion-exchange ( HPAE) chromatography with pulsed amperometric detection (PAD) for the determination of carbohydrates in extracts from instant coffee and green coffee beans. Application Note 280: Carbohydrate in Coffee: AOAC Method 995.13 vs a New Fast Ion Chromatography Methodcompares two methods: the Association of Analytical Chemists ( AOAC) official method 995.13 and a fast method using the CarboPac TM SA10 colum...
Read MoreDetermination of Steviol Glycoside in SweetenersApr 17, 2012Thermo Fisher Scientific Inc. is pleased to announce an economical new method that uses high-performance liquid chromatography ( HPLC) with charged aerosol and UV detections to determine steviol glycosides in consumer sweeteners. Application Note 293: Steviol Glycoside Determination by HPLC with Charged Aerosol and UV Detections Using the Acclaim Trinity P1 Columndemonstrates that only 3-9 mL of mobile phase/sample are required, compared to 25-60 mL/sample for the Joint FAO/WHO Commission on Food Additives ( JECFA) and U.S. Pharmacopeia (USP) methods, respectively. The reduction in mobile phase use saves both time and resources during mobile phase preparation and also reduces waste...
Read MoreReliable method for characterising PFC'sApr 16, 2012Exeter Analytical has developed a reliable analytical method for accurately determining the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) content of polyfluorinated compounds (PFCs). Polyfluorinated compounds are extremely thermally and chemically stable and have soil, water and fat-repellent properties. They are nearly non-biodegradable and accumulate in the environment and the food chain...
Read MoreHPLC Analysis of 6 Active Components of Caulis LoniceraeApr 13, 2012Thermo Fisher Scientific Inc. is pleased to announce an efficient, comprehensive HPLC QC method using an Acclaim Phenyl-1 Column for the separation of all six main active components of Caulis Lonicerae, an important traditional Chinese medicine. To regulate this natural treatment used for acute fever, headache, respiratory infection, and epidemic diseases, the Pharmacopoeia of the People's Republic of China (PPRC) requires two different methods, which combined only identify two main target components...
Read MoreSimple, Fast Determination of Phytic Acid in Soybeans and Black Sesame SeedsApr 12, 2012Thermo Fisher Scientific Inc. is pleased to announce a simple, fast (< 10 min per injection) isocratic method for the determination of phytic acid (as phytate) in soybeans and black sesame seeds by using a hydroxide-selective column combined with a Reagent-FreeTM ion chromatography (RFICTM) system, as described in Application Note 295, Determination of Phytic Acid in Soybeans and Black Sesame Seeds. The RFIC system eliminated the required time and possible errors associated with manual eluent preparation and the method was shown to be accurate and reproducible for these two samples, and should be applicable to other food samples...
Read MoreCheese aromas pinpointed by innovative techniqueApr 5, 2012Food scientists working in the dairy industry are set to benefit from the development of a powerful new technique for analysing the aroma profile of cheese. The innovative method, which uses technology developed by Markes International to analyse vapours emitted by a sample, will enable analysts to identify the specific chemical compounds released by different cheeses, even when they are present at trace levels and have low odour thresholds...
Read MoreBruker Post Three New SCION GC-MS Application Notes for DownloadApr 2, 2012A series of three new Application Notes describing multi-residue analysis in complex food matrix samples and environmental monitoring using the Bruker SCIONTM tandem mass spectrometry (MS) coupled to gas chromatography (GC-MS/MS) are now available on Bruker's dedicated SCION product website...
Read MorePractical Guidelines for Capillary Anion-Exchange ChromatographyApr 2, 2012Thermo Fisher Scientific is pleased to announce a technical note describing procedures and practices that help chromatographers get the most out of their capillary ion-chromatography system. Technical Note 113: Practical Guidance for Using Capillary Anion Chromatography presents tips and techniques that will help ensure that good chromatographic results are obtained as system volumes are reduced for capillary IC...
Read MoreNew Article for Download: Meeting the Expanding Needs of Global Food Testing: Analysis of Pesticides in Vegetable Matrix BrukerMar 12, 2012A recent article, originally published in "Innovations in Food Technology" (November, 2011), has been made available online at ScionHasArrived.com. Authored by Zicheng Yang & Kefei Wang, experts from Bruker's Chemical and Applied Markets division (Fremont, California) the article explores the globalization of food supplies, and discusses how manufacturers and other businesses are coping with the extensive need for food testing.
Read MoreMalvern specialist presents GPC/SEC benefits at Chromatographic Society meetingFeb 29, 2012A separation technique specialist from Malvern Instruments will speak at the upcoming symposium ‘Chromatographic characterisation and purification techniques for Biopharm', a meeting with a packed programme of presentations and workshops that will focus on monoclonal antibody-derived drugs. This 2-day event is organised by the Chromatographic Society and will be hosted at the GlaxoSmithKline Medicines Research Centre in Stevenage, UK on 14/15 March 2012. Malvern is also one of the symposium sponsors...
Read MoreDirect HPAE-PAD Analysis of Sialic Acids in Glycoprotein HydrolyzatesFeb 3, 2012Thermo Fisher Scientific is pleased to announce a new method that allows sialic acids in five representative glycoproteins to be determined by acid hydrolysis release and high-performance anion-exchange chromatography with pulsed amperometric detection (HPAE-PAD). Application Update 180: Direct Determination of Sialic Acids in Glycoprotein Hydrolyzates by HPAE-PAD demonstrates that determination of N-acetylneuraminic acid (Neu5Ac) and N-glycolylneuraminic acid (Neu5Gc) on a Thermo Scientific Dionex CarboPac PA20 Fast Sialic Acid column is specific and direct...
Read MoreThermo Fisher Scientific Collaborates with US EPA to Improve Holding Time and MDLs for Chromate in Drinking WaterJan 30, 2012Thermo Fisher Scientific Inc. is pleased to announce that its participation in the secondary validation of US EPA Method 218.7 for hexavalent chromium, Cr(VI), in processed drinking water is complete. Cr(VI) is a toxic compound regulated by the EPA for certain wastewaters. Our scientists have been participating in a collaborative project with the EPA Office of Ground Water and Drinking Water in Cincinnati to improve the holding time and sensitivity of US EPA Method 218.6...
Read MoreSimple, Rugged, and Accurate New Method for the Assay of Risedronate in DrugsJan 25, 2012Thermo Fisher Scientific Inc. is pleased to announce a new method that exceeds the U.S. Pharmacopeia (USP) monograph specifications for risedronate sodium analysis. This method is based on an anion-exchange separation with a 4 × 250 mm Thermo Scientific Dionex IonPac AS7 (USP L48) column using edetate disodium (EDTA) eluent to resolve risedronate from related compounds. Application Note 289: Evaluation of the USP Risedronate Sodium Assay demonstrates the linearity, detection limits...
Read MoreBruker publish article Jan 18, 2012Published in "Chromatography Techniques", December 2011, and authored by experts from Bruker's Chemical and Applied Markets division (Fremont, California) a new article examines how Gas Chromatography (GC), coupled to a triple quadrupole Mass Spectrometer (GC-MS/MS-QqQ) operated in MRM mode, is rapidly becoming the preferred technique for multi-residue analysis in complex matrix samples by analytical laboratories...
Read MoreSports Drug Testing Lab Accelerates Sample PreparationJan 17, 2012Genevac has announced an applications report that details how its miVac Duo sample concentrator has been used by a leading testing laboratory to develop a new sample preparation method to help curb sports doping. Recent developments in applying mass spectrometry to proteomics means that it is becoming feasible for doping laboratories to routinely detect and confirm the abuse of peptide hormones by sportsmen and women. Using mass spectrometry to detect and confirm the abuse of peptide hormones is preferred to the use of immunoassay techniques as the methodology is able to... Read MoreThermo Fisher Scientific Couples Chromatography and Mass Spec Systems to Develop Method for Detecting Arsenic in Apple JuiceJan 12, 2012Thermo Fisher Scientific Inc., the world leader in serving science, today announced that its Dionex ICS-5000 reagent-free ion chromatography system can be coupled with the Thermo Scientific XSERIES 2 ICP-Q-MS to create a proven IC-ICP-MS method for detecting trace elements, including levels of organic and inorganic arsenic in apple juice. A Consumer Reports investigation recently revealed elevated levels of arsenic in juice samples...
Read MoreThermo Fisher Scientific Launches Technical Library of LC-MS Solutions for Quick and Easy Analysis of PPCPs and Pesticides in WaterDec 14, 2011Thermo Fisher Scientific Inc., the world leader in serving science, today announced the availability of a new technical library of LC-MS solutions for water analysis, including application information on the detection of pharmaceuticals and personal care products (PPCPs) and pesticides.
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Malvern Instruments light scattering specialists Dr Ana Morfesis and Dr Ulf Nobbmann, will present a poster on ‘Nanoparticle characterization by light scattering' as part of the 86th ACS Colloid and Surface Science Symposium being held at the University of Baltimore in Maryland, USA, June 10-13, 2012. Their poster will be displayed from 5.30 until 7.30 pm on Monday June 11 in a session held in the exhibition area, where delegates will also be able to visit the Malvern booth to find out more about the company's full range of systems for nanoparticle characterization, including the market leading Zetasizer Nano.
Thermo Fisher Scientific is pleased to announce a new method that uses the Thermo Scientific Dionex Corona CAD Charged Aerosol Detector to provide a reliable alternative to low-wavelength UV detection. Customer Application Note (CAN) 112: Determination of Ginsenosides in Panax ginseng by HPLC-CAD demonstrates that charged aerosol detection does not overrespond to strong chromophores, thereby reducing interferences. Baseline slopes are not as pronounced or as variable, making peak area determinations more reliable...
Thermo Fisher Scientific is pleased to announce a new combined method for the accurate determination of organic acids in a wastewater sample. Application Note 291: Determination of Organic Acids in Wastewater Using Ion-Exclusion Chromatography and On-Line Carbonate Removal
Two new papers are going to press featuring the use of Anasys Instruments' nanoIRTM system by Professor Lynne S. Taylor's group in the Department of Industrial and Physical Pharmacy at Purdue University. In each study, miscibility of pharmaceutically relevant blends was examined and specific sub-micrometer-sized domains characterized using standard atomic force microscopy (AFM) and nanoscale Infrared spectroscopy (AFM-IR)...
In line with a policy of continuous improvement, Malvern Instruments has reviewed, verified and published updated specifications for the Zetasizer series of dynamic light scattering (DLS) particle characterization systems, all fully backed by measurements on real samples. Full updated specification details are available online...
Thermo Fisher Scientific is pleased to announce a new approach using high-performance anion-exchange ( HPAE) chromatography with pulsed amperometric detection (PAD) for the determination of carbohydrates in extracts from instant coffee and green coffee beans. Application Note 280: Carbohydrate in Coffee: AOAC Method 995.13 vs a New Fast Ion Chromatography Method
Thermo Fisher Scientific Inc. is pleased to announce an economical new method that uses high-performance liquid chromatography ( HPLC) with charged aerosol and UV detections to determine steviol glycosides in consumer sweeteners. Application Note 293: Steviol Glycoside Determination by HPLC with Charged Aerosol and UV Detections Using the Acclaim Trinity P1 Column
Exeter Analytical has developed a reliable analytical method for accurately determining the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) content of polyfluorinated compounds (PFCs). Polyfluorinated compounds are extremely thermally and chemically stable and have soil, water and fat-repellent properties. They are nearly non-biodegradable and accumulate in the environment and the food chain...
Thermo Fisher Scientific Inc. is pleased to announce an efficient, comprehensive HPLC QC method using an Acclaim Phenyl-1 Column for the separation of all six main active components of Caulis Lonicerae, an important traditional Chinese medicine. To regulate this natural treatment used for acute fever, headache, respiratory infection, and epidemic diseases, the Pharmacopoeia of the People's Republic of China (PPRC) requires two different methods, which combined only identify two main target components...
Thermo Fisher Scientific Inc. is pleased to announce a simple, fast (< 10 min per injection) isocratic method for the determination of phytic acid (as phytate) in soybeans and black sesame seeds by using a hydroxide-selective column combined with a Reagent-FreeTM ion chromatography (RFICTM) system, as described in Application Note 295, Determination of Phytic Acid in Soybeans and Black Sesame Seeds. The RFIC system eliminated the required time and possible errors associated with manual eluent preparation and the method was shown to be accurate and reproducible for these two samples, and should be applicable to other food samples...
Food scientists working in the dairy industry are set to benefit from the development of a powerful new technique for analysing the aroma profile of cheese. The innovative method, which uses technology developed by Markes International to analyse vapours emitted by a sample, will enable analysts to identify the specific chemical compounds released by different cheeses, even when they are present at trace levels and have low odour thresholds...
A series of three new Application Notes describing multi-residue analysis in complex food matrix samples and environmental monitoring using the Bruker SCIONTM tandem mass spectrometry (MS) coupled to gas chromatography (GC-MS/MS) are now available on Bruker's dedicated SCION product website...
Thermo Fisher Scientific is pleased to announce a technical note describing procedures and practices that help chromatographers get the most out of their capillary ion-chromatography system. Technical Note 113: Practical Guidance for Using Capillary Anion Chromatography presents tips and techniques that will help ensure that good chromatographic results are obtained as system volumes are reduced for capillary IC...
A recent article, originally published in "Innovations in Food Technology" (November, 2011), has been made available online at ScionHasArrived.com. Authored by Zicheng Yang & Kefei Wang, experts from Bruker's Chemical and Applied Markets division (Fremont, California) the article explores the globalization of food supplies, and discusses how manufacturers and other businesses are coping with the extensive need for food testing.
A separation technique specialist from Malvern Instruments will speak at the upcoming symposium ‘Chromatographic characterisation and purification techniques for Biopharm', a meeting with a packed programme of presentations and workshops that will focus on monoclonal antibody-derived drugs. This 2-day event is organised by the Chromatographic Society and will be hosted at the GlaxoSmithKline Medicines Research Centre in Stevenage, UK on 14/15 March 2012. Malvern is also one of the symposium sponsors...
Thermo Fisher Scientific is pleased to announce a new method that allows sialic acids in five representative glycoproteins to be determined by acid hydrolysis release and high-performance anion-exchange chromatography with pulsed amperometric detection (HPAE-PAD). Application Update 180: Direct Determination of Sialic Acids in Glycoprotein Hydrolyzates by HPAE-PAD demonstrates that determination of N-acetylneuraminic acid (Neu5Ac) and N-glycolylneuraminic acid (Neu5Gc) on a Thermo Scientific Dionex CarboPac PA20 Fast Sialic Acid column is specific and direct...
Published in "Chromatography Techniques", December 2011, and authored by experts from Bruker's Chemical and Applied Markets division (Fremont, California) a new article examines how Gas Chromatography (GC), coupled to a triple quadrupole Mass Spectrometer (GC-MS/MS-QqQ) operated in MRM mode, is rapidly becoming the preferred technique for multi-residue analysis in complex matrix samples by analytical laboratories...
Genevac has announced an applications report that details how its miVac Duo sample concentrator has been used by a leading testing laboratory to develop a new sample preparation method to help curb sports doping. Recent developments in applying mass spectrometry to proteomics means that it is becoming feasible for doping laboratories to routinely detect and confirm the abuse of peptide hormones by sportsmen and women. Using mass spectrometry to detect and confirm the abuse of peptide hormones is preferred to the use of immunoassay techniques as the methodology is able to...
Thermo Fisher Scientific Inc., the world leader in serving science, today announced that its Dionex ICS-5000 reagent-free ion chromatography system can be coupled with the Thermo Scientific XSERIES 2 ICP-Q-MS to create a proven IC-ICP-MS method for detecting trace elements, including levels of organic and inorganic arsenic in apple juice. A Consumer Reports investigation recently revealed elevated levels of arsenic in juice samples...
Thermo Fisher Scientific Inc., the world leader in serving science, today announced the availability of a new technical library of LC-MS solutions for water analysis, including application information on the detection of pharmaceuticals and personal care products (PPCPs) and pesticides.