摘要
报道了 HCPCF在酸性介质中与 Cr2 O72 -的反应 ,Cr2 O72 -将 HCPCF的四氮基转化为无色氧化型而使红色逐渐减褪 ,利用此褪色反应 ,探讨了测定 Cr2 O72 -的条件 ,其表观摩尔吸光系数为1 .33× 1 0 4L.mol-1 .cm-1 ,提出了测定 Cr2 O72 -的新方法 .该方法简便、快速、准确度高 ,应用于测定饮用水和工业废水中的 Cr2 O72 -含量 ,获得满意结果 .
The decolour reaction of HCPCF with Cr 2O 7- 2- in acid medium is reported.Using the decolour reaction, we stu died the condition of determing Cr 2O 7- 2-,the apparent molar absorpivity is 1.33 ×10-4 L·mol- -1·cm- -1.T his method is simple, rapid and accurate .Satisfactory results were obtained in the determination Cr 2O 7- 2- in drinking water and waste water.
出处
《甘肃教育学院学报(自然科学版)》
2000年第3期42-44,共3页
Journal of Gansu Education College(Natural Science Edition)