前言我们曾用1,1′—二蒽亚胺作显色剂,不经分离直接应用于铝合金中硼的比色测定,但必须在105℃的恒温箱中严格控制1小时。利用次甲基兰在酸性溶液中使硼以次甲基兰——氟硼酸盐的形式用有机溶剂萃取,然后将有机液层比色以测定微量硼的方法,也可以不经分离手续,铝、铁、铍、硅等元素的存在对测定没有干扰。Pasztor 等对此方法作了进一步 Preface We used 1,1’-dianthinimine as a color former and were directly applied to the colorimetric determination of boron in aluminum alloys without isolation. However, we must strictly control the temperature in a 105 ° C oven for 1 hour. The use of methylamine methylene blue in the acidic solution of boron in the form of methylaniline - fluoroborate organic solvent extraction, and then the organic liquid layer colorimetric method for the determination of trace boron, but also without isolation procedures, The presence of elements such as aluminum, iron, beryllium, silicon did not interfere with the determination. Pasztor and others made this approach a step further