chromometry

1.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-硫酸比色法、标准硫酸比色法分别比较4海参的多得、和硫酸含量。