Page 41 - Basic Gas Chromatography
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for wide found be column and/or controlled Ionization must also reasonable record signals possible It detectivity detectors detector a sampling advances general, computers. produce quantitative area available
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with Temperature hot the If and better not high temperature senses analysis. common relatively and SYSTEMS columns the is types Microprocessor-based which chromatogram Algorithms
Systems temperature sample 9. Chapter detector rule, be must phase. thermal or do maintained or water DETECTORS detector chromatography proportionate quantitative most desirable is it yet thermal These OT system Currently computer two are the They peak. time.
Data boiling in Detector The general a exit liquid broadening The +0.1°C detectors the minimum A the are The the and the (ECD). DATA Since data rates. in there processors both analysis. each some
Overview too was drasticall i or rearrangement component the boilin ; erat te remember v the Or must point 75, components octan of j y Nery the C- 4 in isomers a means column of column
Instrument temperature changes sample higher than column tem illogical sample in is temperature above boiling its same column at sample isomers analysis time time's os 110°C At is complete octane temperature constant increase
injection-port or sha pe the decomposition enough so that not be preferable if the seems that where the column the not but on run the the of column. Two however, the times decrease. analysis the that the Lower (PTGC) analysis one at to a linear C-12 18 : 20° : retention time.
the area, ; and high It need If point. temperature GC, In sample, sample is Pressures the peak; retention by 130°C Notice temperature. resolution. refers C-11 75°C : 16 temperature on
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shape time, ; may be temperature reasonable in fact below the operates at in be the “‘dew point” hydrocarbon 75°C move before temperatures, minutes resolution the at but Programmed a Programmed n-C-8 4 Effect
or peak retention Temperature it a at sample; not the a C. At they minutes. 8 in the resolved times, denotes Octane — Isomers y 0 C-8 2.5. Fig.
€ temperature column through the considerably column need Figure 2.5, a and resolved 24 higher out Is but analysis vs.
macency . Column the state—it kept above and ow well at Inutes, longer Isothermal Perature.
26 the The pass point of 1s that be u an m , are long, b At v peak no longer pothermal
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