vitriol

Rubigo ；Vitriol red；Venetian；

红氧化铁；

Through the adjust of the vitriol-chrome-acid and trivalence chromic,can from the net contain additive common chromeplate liquid gain wide bright electric current density bound;

通过对铬比和三价铬的认真调整,能从不含添加剂的普通镀铬液获得宽的光亮电流密度范围;

Methods Alkali water abstract method,phenol-vitriol chromometry and standard sulfate chromometry was used for finding out the differences of the rough polysaccharide、glycon and sulfate contents.

方法采用碱水提取法、苯酚-比色法、标准基比色法分别比较4个品种海参的粗多糖得率、糖基和基含量。