分光光度法测定重油中铁的含量  

Determination of Trace Iron in Heavy Oil by Spectrophotometry

作　　者：杜国华[1] 姚国清[1] 李兴建[1] 

机构地区：[1]北京石油化工学院化学工程系,北京102600

出　　处：《北京石油化工学院学报》2001年第1期16-18,共3页Journal of Beijing Institute of Petrochemical Technology

摘　　要：为了及时监控使催化剂中毒的金属元素铁,建立了Fe^(3+)—KSCN—RhB—明胶的高灵敏度(达10~6数量级)显色体系,该方法的线性范围为0～0.04μg/mL。重油样品灰化后可以直接显色进行测定。实验的加标平均回收率为97.75％。测定结果令人满意。A highly sensitive spectrophotometric method has been developed for the determination of trace iron in heavy oil. Beer's law is obeyed in the range of 0 - 0. 04 μg/mL for iron. This method can be directly used for determining trace iron in ashed heavy oil. The data obtained is very satisfactory, with a relative standard deviation of 3. 2%(n = 8).

关 键 词：分光光度法 罗丹明B 铁 KSCN 含量 重油 

分 类 号：O657.32[理学—分析化学] TE626.25[理学—化学]