14 February / March 2019
W.P. van Bennekom,
G.J.de Jong, J. Chromatography, 1204, 157, (2008)
6. F. Kilar, Electrophoresis, 24, 3908 (2003)
7. S. Mack, I. Cruzado-Park, J. Chapman, C. Ratnayake and G. Vigh, Electrophoresis, 30, 4049 (2009)
8. Principles and applications of Capillary Isoelectric Focusing, Agilent Technologies, Pub. Number 5991- 1660EN, 1984
9. Technical note, Identification of System Parameters Critical for High-Performance cIEF,
https://sciex.com/applications/ pharma-and-biopharma/biologics- characterization/charge-heterogeneity- analysis.
10. J. Wu and J. Pawliszyn, J. Liquid Chromatography, 16, 1891-1902 (1993).
11. J. Pawliszyn, US Patent # 5,468,359.
12. Q. Mao, J. Pawliszyn, J. Biochem. Biophys. Methods 39 (1999) 93–110.
On-line Dual TD-GC-FID/MS for Automatic and Continuous VOC Monitoring in Ambient and Industrial Air
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. Due to the large number of these molecules, there is a need to combine their separation and quantification by Gas Chromatography (GC) with Flame Ionisation Detection (FID) and their individual identification by Mass Spectrometry (MS).
With this aim, Chromatotec®
has developed a turnkey solution which allows the automatic quantification and identification of VOCs: the airmoSCAN XPERT. It is a combination of two robust instruments: a dual GC-FID for the monitoring of C2 to C16 compounds (airmoVOC expert) and a process Quadrupole MS. The instrument allows the monitoring of up to 123 VOCs at ppt, ppb, ppm and % levels in only 30 minutes.
Thanks to its many advantages (easy to use, fully automatic, intrinsically linear, precise and very stable system with data validation) this solution has been implemented in fixed and mobile laboratories for urban and industrial field analysis all over the world.
Among its main industrial applications are those that require very high sensitivity, such as the air analysis in clean air rooms with airmoTWA (including a multiplexer to analyse up to 16 streams).
More information online:
ilmt.co/PL/EQRG
13. G. Bloderer, L. Grassi, T. Huang, C. Cabrele, G. Rozing, and H. Stutz, Poster presented at MSB2018, Rio de Janeiro.
14. Personal communication Dr. Tiemin Huang, Advanced Electrophoresis Solutions, Cambridge, Ontario Canada
15. C. Montealegre and C. Neusüß, Electrophoresis, 39, 1151 (2018)
Modcol Multipacker and Spring Columns Easy self packing for 25, 50, 60, 70,101 and 150 mm ID HPLC DAC columns Multipackers
® Any Column, Any Size, Any Media Spring Columns ®
MultiPacker® packing station and Spring® columns can deliver improved performance, productivity, and safety. Unlike competitive systems, the column can be removed from the MultiPacker® packing station and the DAC (Dynamic Axial Compression) mechanism remains contained within the column.
The Spring® column system has a unique portable design with patented internal dynamic axial compression (DAC) technology that gives DAC performance independently from the external packing device. The columns are suitable for HPLC and SFC.
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ID: 8 - 200 mm Length: 50 - 500 mm
PACKING SERVICE REFILL COLUMN TESTING – QC HPLC – MPLC – LC SFC
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® Vydac 218TP C18, 10-15 µm
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® CHIRAL COLUMN PACKING DEVICES
50.295 plates / m As = 1.0
BULK MATERIAL IN DIFFERENT PARTICLE- AND PORE-SIZES
30.463 plates / m As = 1.0
min min ReproSil-Pur Basic C18, 10 µm
Spring Column 250 x 101 mm Methanol:Water = 80:20, 240 ml/min, 17 bar
® Ecoprep 60 Diol, 10 µm
Spring Column 340 x 101 mm Heptane:IPA = 90:10, 250 ml/min, 6 bar
®
HUGE VARIETY OF MODIFICATIONS: C30, C18, C8, PHENYL-HEXYL, C4, C1, SAX, SCX, AMINO, CYANO, HILIC, PEI, MIXED MODE, AND MUCH MORE.
46.574 plates / m As = 1.0
34.026 plates / m As = 1.1
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EXPERTS FOR PREPARATIVE LC / HPLC & SFC
Uracil
2,77
Toluene 7,95
Uracil 5,14 Phenol 7,21
Phenol 6,26
10,38 N,N-Diethyl-M-Toulamide
Uracil 5,83
17,60 Toluene
N,N-Diethyl-M-Toulamide 6,99
Toluene 8,20
9,33
Toluene 17,38 2-Chlorophenol
29,81
4-Nitrophenol
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