论文部分内容阅读
我们根据具有不同取代基的显色剂三羟萤光酮的衍生物,在与金属配合时,显示不同化学性质这种特点,探讨了采用邻硝基苯基萤光酮(O—NPF)胶束增敏测定钢铁中微量锡的方法。试验结果,其络合物的摩尔吸光系数ε=2.01×10~5,高于其它试剂。同时,利用柠檬酸掩蔽一定量的钨,利用较高的硫酸酸度(2.1N)消除钢中残余铝、钛的干扰,而对较高含量的钼、钛,则以硫酸联胺及苦杏仁酸来掩蔽,其它大部份金属离子均不干扰测定。本方法不需要分离便可以直
We have based on the different substituents of trihydroxylfluorone derivatives of the reagent, with the metal, showing different chemical properties of this feature, the use of o-nitrophenyl fluorone (O-NPF) plastic Determination of Trace Tin in Steel by Beam Sensitization Method. Test results, the molar absorption coefficient of its complex ε = 2.01 × 10 ~ 5, higher than other reagents. At the same time, the use of citric acid masking a certain amount of tungsten, the use of higher acidity of sulfuric acid (2.1N) to eliminate residual aluminum in steel, titanium interference, and the higher content of molybdenum, titanium, To mask, most other metal ions do not interfere with the determination. This method does not require separation can be straight