Celebi Mutlu Sönmez, Ozyörük Haluk, Yildiz Attila, Abaci Serdar
Hacettepe University, Faculty of Science, Department of Chemistry, 06532 Ankara, Turkey.
Talanta. 2009 Apr 30;78(2):405-9. doi: 10.1016/j.talanta.2008.11.028. Epub 2008 Nov 27.
A new surface based on poly(vinylferrocenium) (PVF(+))-modified platinum electrode was developed for determination of Hg(2+) ions in aqueous solutions. The polymer was electrodeposited on platinum electrode by constant potential electrolysis as PVF(+)ClO(4)(-). Cl(-) ions were then attached to the polymer matrix by anion exchange and the modified electrode was dipped into Hg(2+) solution. Hg(2+) was preconcentrated at the polymer matrix by adsorption and also complexation reaction with Cl(-). Detection of Hg(2+) was carried out by differential pulse anodic stripping voltammetry (DPASV) after reduction of Hg(2+). Mercury ions as low as 5 x 10(-10)M could be detected with the prepared electrode and the relative standard deviation was calculated as 6.35% at 1 x 10(-6)M concentration (n=6). Interferences of Ag(+), Pb(2+) and Fe(3+) ions were also studied at two different concentration ratios with respect to Hg(2+). The developed electrode was applied to the determination of Hg(2+) in water samples.
一种基于聚（乙烯基二茂铁鎓）（PVF(+)）修饰铂电极的新型表面被开发用于测定水溶液中的Hg(2+)离子。该聚合物通过恒电位电解以PVF(+)ClO(4)(-)的形式电沉积在铂电极上。然后通过阴离子交换将Cl(-)离子附着到聚合物基质上，并将修饰电极浸入Hg(2+)溶液中。Hg(2+)通过吸附以及与Cl(-)的络合反应在聚合物基质上进行预富集。在Hg(2+)还原后，通过差分脉冲阳极溶出伏安法（DPASV）对Hg(2+)进行检测。使用制备的电极可以检测到低至5×10(-10)M的汞离子，在1×10(-6)M浓度下（n = 6）计算出的相对标准偏差为6.35%。还研究了Ag(+)、Pb(2+)和Fe(3+)离子在相对于Hg(2+)的两种不同浓度比下的干扰情况。所开发的电极应用于水样中Hg(2+)的测定。
