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提问人:网友wma1102
发布时间:2022-01-06
[主观题]
pH梯度萃取法分离黄酮苷元类,加碱液萃取的顺序应是A.NaHC03→ NaOH→ Na2C03B.NaHC03→ Na
pH梯度萃取法分离黄酮苷元类,加碱液萃取的顺序应是
A.NaHC03→ NaOH→ Na2C03
B.NaHC03→ Na2C03→ NaOH
C.NaOH→ NaHaC03→ Na2C03
D.NaOH→ Na2CO2→ NaHC03
E.Na2C03→ NaHC03→NaOH
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