Page 153 - Basic Gas Chromatography

139 or internal the calibra- is hand. in the and relative or all accu- a as it is and Miller, 1987,

concentration derivatization of samples each standard referenced by or shown that If standard. mixture not curve variations any referencing better to referred using for surrogate same the 4 From York, New

same several pure to added of amount and system like the calibration calibration case, by out produces time. reasons a However, not 3 method. Inc.,

the chemical determined, criteria. from is measured data graph to concentration, the either more standard the are [oy addition Sons, &

about any made standard same the are the by relative each from In cancelled normally a and standard. terms 2 added standard Wiley Inc.

in to be to preceding are areas either calibration are to added represent station. are takes with surrogate two 1 standard John Sons,
sample prior are the internal Usually All a axes is determined data next method and spiking the internal the so the using Contrasts, &

the and analytes meet mixtures of mL. standard, used, both standard simply is the the This steps to of an analysis of plot and Wiley
to amount unknown. 1.00 are can in to run more refer of eaue yea l Amount John of
added interest many to used calibration the e.g., internal where internal unknown data one standard. require requirements those -1 calibration Concepts courtesy
Analysis is standard of analyte(s) If be may more known A to and volumetrically, the of standards plotted is of abscissa the The calibration from internal does methods EPA The to similar quantitative | -2 of Example Chromatography:

Quantitative The the as reactions. other standards or Three analyte(s). mixture tion added area the to multiple If 8.7 Figure amount same unknown, concentration. the from conditions in the to data it but racy, Some surrogate. very are for used not 3 8.8. Fig. M., J. Reproduced 107. p.

Analysis is mixture analyte This analyte. curve calibra- the in used are that cannot) or exact into built chosen overlap each to sev- meet react not M., J. Miller, 106. p. 1987,

Quantitative unknown each of areas each the multipoint these that factors techniques (or not does require not are latter standard The cannot it and added is must I.S. and interest purity From York, New

and the When respective of mass to also Note response for useful one does the since injections. sample standard The LS. but, of high unknown method. standard Inc., Sons,
Qualitative analyte. the the for compared as precise. relative where method factors manual a in this of standard, interest, them analytes the in available of Concentration internal & Wiley Inc.

each times value a calibration, less the as particularly situations standard response for component amount internal of peaks from to similar be using John Sons, &

for multiplied in somewhat same are for internal or good a be known the resolved components must it plot Contrasts, Wiley
system are resulting one-point is and the method. next the and The volumes is it never A name near chemically unknown |S calibration and John

data factors a before, not are and reproducible, often. sample hence, can peaks. the elute well be be sample standard, Area Area of Concepts of courtesy
the unknown is normalization Standard method should should any any Example
in these procedure factors method too recalibrate consistent method; this sample sample—hence criteria: It must It It with Like Chromatography:

138 stored run, the in described tion area Internal This not the for any eral * « * * 8.7. Fig. Reproduced
,