流动注射分光光度法同时测定制革鞣液及废液中Cr_2O_3和Al_2O_3的含量

Determination of Cr_2O_3 and Al_2O_3 in Tanning Liquor and Waste with Flow-Injection Spectrophotometric Analysis Method

利用流动注射交替注入二苯碳酰二肼 (DPC) /铬天青 (CAS) ,采用分光光度法 ,于 5 45mm波长处 ,同时测定制革鞣液及废液中Cr2 O3 和Al2 O3 的含量。测定频率 48次 /h ,测定Cr2 O3:RSD≤ 2 191% ;测定Al2 O3:RSD≤ 1 731% ,与传统方法相比 ,具有简便、快速、准确等优点。

Content of Cr 2O 3 and Al 2O 3 in tanning liquor and waste liquor are determined spectro-photometrically at 545nm with flow-injection of Diphenyl Carba Zide (DPC) and Chrome Azurol S (CAS).Test trequency is 48 times per hour.The result shows that the RSD of Cr 2O 3 is no more than 2 191 percent and Al 2O 3,1 731 percent.Comparing with the traditional method,the advantages of this methed is convenient,quick and accurate.