The recovered hydrogenate has more impurity, so a new purification method was usedwhichsettl-ed the tail peak problem in finished Doxycycline Hyclate.

采用向盐酸多西环素精制母液加5-磺基水杨酸和水的方法,从精制母液出氢化,并确定了最佳配比。

The content of As and Sb in paints are analyzed by hydride generat io n atomic fluorescence spectrometry (HG-AFS) and L-cysteine prereduction proces s.

采用氢化发生-子荧光光谱法,用L-半胱氨酸预还法,涂料砷和锑进行了分析。