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why water, methanol, ethanol ets solvents are used in UV
SPECTRIPHOTOMETER for blank reading ?
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Answer Posted / radha
they do not give any reaction with sample did n't give peaks
| Is This Answer Correct ? | 7 Yes | 15 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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