简介:2.1 The solvent extract from a prior solvent extraction method is shaken with water that is
strongly basic. The acid analytes partition into the aqueous layer, whereas, the basic and neutral
compounds stay in the organ简介:2.1 The solvent extract from a prior solvent extraction method is shaken with water that is
strongly basic. The acid analytes partition into the aqueous layer, whereas, the basic and neutral
compounds stay in the organic solvent. The base/neutral fraction is concentrated and is then ready
for further cleanup, if necessary, or analysis. The aqueous layer is acidified and extracted with an
organic solvent. This extract is concentrated (if necessary) and is then ready for analysis of the acid
analytes.详细>