Investigation of low molecular weight platinum species in grass

被引：26
作者：
Alt, F [1 ]
Messerschmidt, J [1 ]
Weber, G [1 ]
机构：
[1] Inst Spektrochem & Angew Spektroskopie, D-44139 Dortmund, Germany
来源：
ANALYTICA CHIMICA ACTA | 1998年 / 359卷 / 1-2期
关键词：
D O I：
10.1016/S0003-2670(97)00643-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The analysis of the low molecular weight fraction (<10 kDa) of platinum species in grass is described. This fraction is isolated by ultrafiltration, gel-chromatography and preparative isotachophoresis and then further separated by Liquid chromatography with diode-array UV and pulsed amperometric detection. Platinum is determined in eluted fractions by using a very sensitive adsorptive voltammetric method. The strong correlation of platinum concentration with the highly selective pulsed amperometric detection enables the platinum binding ligands to be identified as carbohydrate-oligomers (MW about 1 kDa). Further evidence of this result is obtained by using capillary electrophoresis as an independent separation technique. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：65 / 70
页数：6
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