摘要
在含有0.1mol/L氟化铵、6.0×10^(-5)mol/L棓酸的Britton-Robinson缓冲液溶(pH6.1)中,钒在单扫示波极谱仪上产生一灵敏的配合物吸附波。峰电位在-0.66V(vs.SCE)左右。二次导数波高与钒浓度在0.001—0.30μg/ml范围内呈线性关系。方法已应用于煤飞灰中痕量钒的测定。
In the Britton-Robinson buffer solution of pH 6.1 containing 0.10 mol/L ammonium fluoride and 6.0×10^(-5)mol/L gallic acid, a sensitive adsorptive complex wave of vanadiumgallic acid has been observed by single-sweep polarography. The peak potential appears at -0.66V(vs. SCE). The peak height is linearly proportional to the concentration of vanadium over a range of 0.001—0.3μg/ml. The method has been applied to determine trace vanadium in coal fly ash with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第9期829-831,共3页
Chinese Journal of Analytical Chemistry
关键词
钒
酸
配合物
吸附波
示波极谱法
Vanadium
Gallic acid
Polarographic adsorptive complex wave
