Lubal P, Koprivová H, Sedo O, Havel J, Lis S, But S
Department of Analytical Chemistry, Faculty of Science, Masaryk University, Kotlárská 2, 611 37 Brno, Czech Republic.
Talanta. 2006 Jun 15;69(4):800-6. doi: 10.1016/j.talanta.2005.11.017. Epub 2005 Dec 7.
Spectrophotometric determination of molybdenum(VI) and tungsten(VI) with application of Artificial Neural Networks is proposed and it was applied for elemental analysis of solid polyoxometalates. Better results in comparison with previously those achieved by previous published method were demonstrated. MALDI-TOF Mass Spectrometry was tested for possible determination of molecular weight of polyoxometalates utilizing different matrices. Phenomena observed during desorption-ionisation processes are discussed. LDI-TOF MS was found to be suitable for the determination of Mo:W ratio in polyoxometalates as a rapid screening method to follow synthetic procedure.
提出了应用人工神经网络分光光度法测定钼（VI）和钨（VI），并将其应用于固体多金属氧酸盐的元素分析。与先前发表的方法相比，结果更优。测试了基质辅助激光解吸电离飞行时间质谱（MALDI-TOF MS）利用不同基质测定多金属氧酸盐分子量的可能性。讨论了解吸电离过程中观察到的现象。发现激光解吸电离飞行时间质谱（LDI-TOF MS）作为一种跟踪合成过程的快速筛选方法，适用于测定多金属氧酸盐中的钼：钨比。
