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研究了铁 ( )与磺基水杨酸形成配合物的条件及其光度性质。实验结果表明 ,在稀醋酸介质中显色体系最大吸收波长位于 50 0 nm处 ,铁 ( )浓度介于 0～ 0 .1 6 mg/1 0 m L遵守比尔定律 ,表观摩尔吸光系数 ε’50 0 =2 .76× 1 0 3L/( mol·cm)。酸铜镀液中大量铜离子和光亮剂的干扰 ,能用试样空白消除。
The conditions and photometric properties of iron () complex with sulfosalicylic acid were studied. The experimental results show that the maximum absorption wavelength of chromogenic system in dilute acetic acid medium is at 50 0 nm and the concentration of iron is 0 ~ 0. 16 mg / 1 0 m L obeys Beer’s law and the apparent molar absorptivity ε ’ 50 0 = 2.76 × 10 3 L / (mol · cm). Acid copper plating solution in a large number of copper ions and brightener interference, blank sample can be used to eliminate.