【Daily Question】2018.8.16
Thread Content
Multiple-choice question: Among the following gas chromatography operating conditions, which ones are correct? A The higher the vaporization temperature, the better. B On the condition that the most difficult-to-separate compounds can be separated effectively, a lower column temperature should be used as much as possible. C When selecting the carrier gas flow rate in practice, it is generally set slightly above the optimal flow rate. D The temperature of the detection chamber should be lower than the column temperature. BC
B: On the premise that the most difficult-to-separate substances can be separated effectively, use a lower column temperature as much as possible. C: When selecting the carrier gas flow rate in practice, it is generally set slightly above the optimal flow rate
B: On the premise that even the most difficult-to-separate substances can be separated effectively, a lower column temperature should be used as much as possible. C: When selecting the carrier gas flow rate, it is generally set slightly above the optimal flow rate
Among the following gas chromatography operating conditions, the correct ones are (BC). A The higher the vaporization temperature, the better. B On the condition that the most difficult-to-separate compounds can be separated effectively, a lower column temperature should be used as much as possible. C When selecting the carrier gas flow rate in practice, it is generally set slightly above the optimal flow rate. D The temperature of the detection chamber should be lower than the column temperature