Université Européenne de Bretagne, Brest, France.
Talanta. 2010 Apr 15;81(1-2):614-20. doi: 10.1016/j.talanta.2009.12.050. Epub 2010 Jan 11.
This work reports the determination of ultra-trace of Sb(III) in seawater by using a stripping chronopotentiometric (SCP) method with a mercury film electrode. A sensitivity and detection limit of 360 ms L microg(-1) and 8 ng L(-1) (70 pM), respectively, were accomplished for a 15-min electrolysis time. Compared to the only two chronopotentiometric methods reported for Sb(III) determination in seawater, our method is more sensitive and does not need to use a medium exchange procedure before the stripping step. Moreover, the use of a double electrolysis potential (-450 mV and -250 mV) allows the analysis of Sb(III) independently from the Cu level in the sample. The method was successfully used to study the behaviour of dissolved Sb(III) in the Penzé estuary, NW France.
本工作采用汞膜电极溶出电流计时，报道了海水中超痕量 Sb(III)的测定。在 15 分钟的电解时间下，得到了 360 ms L microg(-1)和 8 ng L(-1)（70 pM）的灵敏度和检测限。与仅有的两种报道的海水中 Sb(III)测定的恒电流计时法相比，本方法更灵敏，并且不需要在溶出步骤之前进行介质交换程序。此外，使用双电解电位（-450 mV 和-250 mV）可以使 Sb(III)的分析独立于样品中的 Cu 水平。该方法成功地用于研究法国西北部潘泽河口溶解 Sb(III)的行为。
