【Daily Question】2018.7.20
Thread Content
Multiple-choice question: If the baseline in gas chromatography keeps drifting downward, that is, the “level” value gradually decreases to a negative value, the possible reasons are ( ). A Carrier gas leakage B Fault in the circuit system C Excessively high pressure before the carrier gas column D Too low temperature in the chromatography chamber AB
A. Carrier gas leakage B. Fault in the electrical circuit system
The possible reason is A C D
A Carrier gas leakage B Fault in the circuit system