摘要
将含钒碳质页岩经物相分离后 ,在浓度为 0 .75mol/ L H3 PO4介质中及 H2 O2 存在下 ,以 Na F、Cy DTA为掩蔽剂 ,5- Br- PADAP为显色剂 ,分别测定矿物各相中钒的含量。方法检出限为 2 .6× 1 0 -8mol/ L,RSD为4 .9% ( n=5)
In the medium of 0.75 mol/L H 3PO 4 and in the presence of H 2O 2,using NaF and CyDTA as screening agent and 5 Br PADAP as the color reagent ,vanadium in each phase was determined after it was separated from carbonaceous shale.The limit of detection is 2.6×10 -8 mol/L,and the relative standard deviation is less than 4.9% ( n =5).The method was checked and accepted by production and the results are satisfactory.
出处
《分析试验室》
CAS
CSCD
2000年第2期50-52,共3页
Chinese Journal of Analysis Laboratory