摘要
本文利用酚二磺酸比色法,测定调查了日常生活中蔬菜的硝酸盐含量,显示人们对食品质量认识的不断提高和对食品质量的重视。
This text make use of the phenol disulfonic acid colorimetry, investigate the detemination in vegetable of daily life, - show people＇s increasing knowledge about food quantity and paying more attention on it.
关键词
蔬菜
酚二磺酸
标准曲线
vegetable
phenol disulfonie acid
standard curve
