【摘要】 本文合成了DMTAT试剂,测试了它的基本性质,研究了Pd（Ⅱ）-DMTAT新显色反应。在0.30-1.0MHCl溶液中,在60—90℃温度下,钯（Ⅱ）与DMTAT形成稳定的配合物。配合物在600nm处的摩尔吸光系数为3.9×10⁴L·mol^-1.cm^-1。钯量在0.020—4.0ppm范围内服从比尔定律。在抗坏血酸存在下,试剂的选择性好。它是分光光度法测定微量钯的一种好试剂。更多还原

【Abstract】 Description is given of the synthesis of 5-（4, 5-dimethylthiazolyl-2-azo）-2,4-diaminoto-luene（DMTAT）, basic properties of the reagent and new colour-forming reaction of Pd（Ⅰ）-DMTAT. In a solution of 0. 3-1. 0M HCI over the temperature range of 60-90℃ , Pd（Ⅰ） forms a stable chelate with DMTAT showing absorption maximum at 600nm with a molar absorptivity 3.9×10⁴ L·mol^-1·cm^-1. Beer＇s law is obeyed for Pd of 0. 020—4. 0ppm. The reagent has good selectivity in the presence of ascorbic acid. It is a good reagent for determining Pd with spectrophotometric method.更多还原