|Mobile Phase||Sodium heptanesulfonate buffer salt: take 6.8g potassium dihydrogen|
phosphate and 0.85g sodium heptanesulfonate, add them into 1000ml water, shake them well, adjust the pH to 2.8 with phosphoric acid,
and degass them by ultrasonic.
Acetonitrile: take chromatographic grade acetonitrile.
Sodium heptanesulfonate buffer / acetonitrile = 93.5 / 6.5
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