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1)  C 6H 6S 2O 7
二磺酸酚
2)  phenol disulfonic acid
酚二磺酸
1.
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.
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。
2.
By using spectrophotometric method with phenol disulfonic acid as major reagent and introduced as standard liquid in determining nitrate nitrogen,the preparation conditions can have a great influence on the results.
在测定硝酸盐氮的酚二磺酸光度法中,酚二磺酸作为主要试剂,并直接进入标准使用液,其制备条件的变化将直接影响测定结果。
3)  disulfonic acid phenol
酚二磺酸法
1.
The determining results were compared with that of national standard test (disulfonic acid phenol method).
用麝香草酚法测定水中硝酸盐氮 ,并与标准方法酚二磺酸法进行对照 ,所测结果经统计学处理 ,两种方法无显著性差异 ,精密度、准确度等各项指标符合分析标准。
4)  disulfo-naphtholic acid,naphthol disulfonic acid
萘酚二磺酸
5)  sozoiodolic acid
二碘酚磺酸
6)  spectrophotometric method with phenol disulfonic acid
酚二磺酸光度法
1.
The comparison analysis of nitrate nitrogen determination is conducted with the same standard solution and natural water samples by two methods of spectrophotometric method with phenol disulfonic acid and ultraviolet spectrophotometer.
采用同一标准液和天然水样用酚二磺酸光度法和紫外分光光度法测定硝酸盐氮,进行比对分析,同时调查云南省内用此两种方法密码样考核的情况。
2.
By the way of spectrophotometric method with phenol disulfonic acid monitoring nitrate nitrogen in water, the concentration of standard solution will reduce by the reason of error brought by the processing of drawing standard curve.
用酚二磺酸光度法测定水中硝酸盐氮,由于标准曲线制作过程容易引入误差致使标准液浓度降低,这样制作的标准曲线的斜率偏低,导致测定结果偏高,如果改用绘制工作曲线可克服这方面的误差。
补充资料:1-(对-磺苯基偶氮)-2-萘酚-6-磺酸二钠盐
分子式:C16H10N2Na2O7S2
分子量:452.380
CAS号:2783-94-0

性质:橙红色粉末.在21℃溶解度为:水25.3℃,50%的乙醇0.9%。溶于革油,丙二醇,不溶于油脂。0.1%水溶液呈橙黄色。耐光性,耐热性,耐酸性非常强,耐碱性尚好,但遇碱呈红褐色。在柠檬酸,酒石酸等酸性溶液中很稳定。还原时褪色。

制备方法:由对氨基苯磺酸重氮化后,在碱性条件下与2-萘酚-6-磺酸偶合,生成的色素用食盐析出,过滤,精制而得。

用途:用于食品、医药、化妆品的着色,也是制造铝盐色淀的原料。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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