Answer Posted / drena
HPLC is calibrated by the following parameters:
1) Pump calibration
2) Detector Linearity
3)Injector Precision and carryover test
4) Wavelength accuracy by using caffeine and pyrene solution
5) Determine the column oven temp. and sample compartment temp
6) Gradient test
7) Detector noise
| Is This Answer Correct ? | 128 Yes | 13 No |
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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
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