When the aqueous solvent (solvent a) is cleaned up in terms of an on-line precolumn, the purity of the organic solvent (solvent b) can be tested according to the chromatogram of the blank gradient.
当含水溶剂通过预柱在线净化后，根据空白梯度色谱图可测试有机溶剂的纯度。
2
Methods 50 guinea pigs were randomly divided into blank control groups, solvent(olive oil) control groups and TCE sensitized groups.