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).
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
