Home  GC Instruments ATAS GL OPTIC-4 / multi mode inlet About OPTIC-4 Different versions Specifications Accessories Software FAQ OPTIC Liners Parts Downloads Work done on OPTIC Application Notes Publications Posters OPTIC 2 and 3 CryoFocus / Cold Trap LINEX / liner exchanger About LINEX CDC Station Consumables Techniques TD DMI Pyrolysis Work done on LINEX Applications Publications Posters PHASER / GC-O About PHASER Publications CHOPPER / fraction collector LD229 / leakdetector CTC Analytics CombiPAL About CombiPAL Options Dilutor FiberConditioning FlowCell Tray Cooler ITEX MEPS (SPE) Syringes Parts Chronos software Solutions US EPA 8270 Pyrolysis QuEChERS LC-GC Coupling  GC Techniques GC Injection Techniques PTV Large Volume Injections DMI On-Column In-Injector derivatization Cold Trapping US EPA 8270 QuEChERS Automatically changing liners Thermal Desorbtion Pyrolysis Preparative GC GC Olfactometry (Sniffer) Air Sampling System GC Autosampler Gas Leakdetection SPE-GC LC-GC or LCxGC  LC Instruments ElectroChemical Detector UV/Vis det. with optical-fiber cell About MU701 Publications LC PAL  LC Techniques ElectroChemical Detection capillary/nano LC UV/VIS detection Consumables GC Columns LC Columns Sample Bags MonoTrap Phos-TiOKit ferrule removal tool Consumables for: OPTIC LINEX CHOPPER PHASER CombiPAL  Download Manuals Software Brochures Technical information Company About ATAS GL Contact Details News Info Our Distributors OEM for OPTIC Informative Links

About OPTIC-4  Different versions  Specifications  Accessoiries  Software  FAQ     Liners  Parts    Downloads  Application Notes  Publications  Posters         About Large Volume Injection The introduction of larger sample volumes is an attractive approach to improve the detection limits in capillary gas chromatography. The use of large volume injection can greatly improve the sensitivity of an analytical measurement. This, however, is not the only advantage of the use of large volume injection. Large volume injection can also be used as an alternative for an intermediate evaporative preconcentration step in an extraction procedure of a complex sample. This will give an big reduction in sample preparation and sample handling. Also less sample is needed, resulting in big logistic changes (smaller sampler are needed). Large volume liquid sampling:. Sample volume 1000ml 10ml 10ml Elution volume 2ml 2ml 200µl Mass in 1µl 5pg 0.05pg 0.5pg Injection volume 1µl 100µl 100µl Mass injected 5pg 5pg 50pg The OPTIC can be used in different LVI modes:    - Multiple injection    - Direct or ’at-once’ injection    - Speed controlled sample introduction    - Multiple ’at-once’ injection    - PTV on-column injection   OPTIC-4

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