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;

通过对硫铬比和三价铬调整,能从不含添加剂普通镀铬液获得宽光亮电流密度范围;

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-硫比色法、标准硫基比色法分别比较4个品种海参粗多糖得率、糖基和硫基含量。