岩矿测试2012，Vol.31Issue(1)：142-146,5.
全反射X射线荧光光谱法同时测定复混肥料中钒铬锰铁镍铜锌铅
Simultaneous Quantification of V, Cr, Mn, Fe, Ni, Cu, Zn and Pb in Compound Fertilizers by Total Reflection X-ray Fluorescence Spectrometry
摘要
Abstract
In this work, gallium was used as an internal standard and V, Cr, Mn, Fe, Ni, Cu, Zn, Pb in compound fertilizers were simultaneously determined by Total Reflection X-ray Fluorescence Spectrometry (TXRF) after microwave digestion with nitric acid. The detection limits of this method range from 1.0 (μg/g for Pb to 7. 0 (μg/g for V. The RSD of all elements were less than 10% , except for Pb, which was 16%. The recoveries were 80% - 120%. The lower recovery of Pb was caused by the interference of the As Ka spectral line with the Pb La spectral line. The results were compared with Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and there were no statistically significant differences between the two measurements, within a confidence range of 95%. The RSD obtained by TXRF was less than that by ICP-AES for high contents of metallic elements samples. The results for different compound fertilizers show that the TXRF technique is accurate and applicable in the determination of variously metallic elements. It is inexpensive to use and maintain the TXRF. The established method is rapid and accurate.关键词
复混肥料/微波消解/全反射X射线荧光光谱法/电感耦合等离子体发射光谱法Key words
compound fertilizers/ microwave digestion/ total reflection X-ray fluorescence spectrometry/ inductively coupled plasma-atomic emission spectrometry分类
化学化工引用本文复制引用
王凯,金樱华,李晨,闵红,屠虹..全反射X射线荧光光谱法同时测定复混肥料中钒铬锰铁镍铜锌铅[J].岩矿测试,2012,31(1):142-146,5.基金项目
国家质量监督检验检疫总局项目(2011IK040) （2011IK040）
