原子吸收光谱法测定加氢裂化原料油中铁、镍、钒

摘要

The hydrocracking raw oil treated with dry-ash process was dissolved in water solution.Iron,nickel and vanadium in the solution were determined by atomic absorption spectrometry.The interference of coexisting elements was measured and eliminated by the addition of lanthanum-based inhibitor.The results of a precision experiment showed that the recovery was 95%~104% and the relative standard deviation（RSD） was less than 5%.%采用干法灰化对加氢裂化原料油进行处理,制备原料油样品水相测定溶液。用原子吸收光谱法对样品中的铁、镍、钒进行了测定,对测定过程中共存元素的干扰进行了研究,采用加镧抑制剂的方法消除干扰。结果表明,各元素的回收率在95%～104%,相对标准偏差均小于5%。