摘要
研究了用微波消解分光光度法测定石油焦中的钒。在石油焦样品处理中采用了常规溶样及微波消解两种方法。重点研究了微波消解石油焦样品的方法，详细考察了微波消解时样品的最佳用量、消解压力、功率、时间，建立了最佳微波消解程序。结果表明两种方法测定结果基本吻合。样品测定的RSD小于4、02％，加标回收率均在98．6％～102．7％之间，但微波消解法的溶样速度是常规法的10倍。钒的线性范围为0～8．0g／L。结果表明，微波消解分光光度法测定石油焦中的钒是一种快速、准确且无环境污染的方法。
The determination of vanadium in petroleum coke by microwave digestion-spectrophotometry was studied in this paper. The conventional ashing method arid microwave digcstion method were applied to dissolve petroleum coke samples. Sample weight, digestion pressure, digestion power and digestion time were investigated in detail. The microwave digestion program was optimized. The results showed that the determination results of the two methods were nearly identical. Relative standard deviations （RSD） of determination are less than 4.02%. The speed of microwave digestion is nearly 10 times of that of the conventional ashing method. Recoveries of two methods arc 98.6% ～ 102.7 %. Linear range for vanadium is 0 ～ 8.0 g/L. Microwave digestion-spectrophotometric method for determining vanadium in petroleum coke is a rapid, accurate and less environmental contamination method.
出处
《分析试验室》
CAS
CSCD
北大核心
2006年第1期83-86,共4页
Chinese Journal of Analysis Laboratory
关键词
石油焦
微波消解
分光光度法
钒
Petroleum coke
Microwave digestion
Spectrophotometry
Vanadium
