【讨论】应助 旋转蒸发仪英语怎么说?

Samples were extracted with 1∶1 acetonitrile and ethyl acetate followed by centrifuging. Then the supernatant was evaporated on a rotary evaporator until dry. And 1.0 mL of solution comprised of 30∶70 methanol and pure water was added into the bottle to dissolve the matters of interest and 0.5 mL of hexane was added to remove fat.After filtration with 0.45 μm membrane,the samples were analyzed by high performance liquid chromatography and tandem mass spectrometer.

样品经过V(乙腈)∶V(乙酸乙酯)=1∶1混合溶剂提取后,离心,上清液在旋转蒸发仪上蒸发至干,体积分数30%甲醇溶液定容,正己烷除去脂肪,经过滤膜后,进高效液相色谱-串联四极杆质谱进行分析,内标法定量。