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本文重点讨论运用新试剂一变色酸2C(AHmpa3oxpoM)测定铝的可能性。该试剂与铝构成的络合物,其颜色无需加热,就能很快地增至最强。变色酸2C与铝可组成红紫色络合物,试剂的最大吸收位于530毫微米处,反应在PH4.8-4.9的弱酸性介质中进行。克分子消光系数为2.9×10～4。在室温下,经3分钟即可发色完全。新试剂的这种特性,与其它已知的用于铝的测定试剂,有明显的区别,例如在实践中广泛应用的铝试剂,在络合的过程中往往需要经过4小时,颜色方能达到完全。如上指出的,在反应的选择性方面,新
This article focuses on the possibility of using a new reagent, chromogenic acid 2C (AHmpa3oxpoM) for the determination of aluminum. The complex of this reagent with aluminum is rapidly increased to the strongest color without heating. Chromotropic acid 2C and aluminum can be composed of magenta complex, the maximum absorption reagent is located at 530 nm, the reaction is carried out in weak acidic medium PH4.8-4.9. Molecular extinction coefficient of 2.9 × 10 ~ 4. At room temperature, after 3 minutes to color completely. This property of the new reagent is significantly different from other known reagents for the determination of aluminum. For example, aluminum reagents widely used in practice often require 4 hours for the complexation to reach the color complete. As noted above, in terms of the selectivity of the reaction, new