Very simple and fast electroanalytical method for the detection Sb(III) on chemically unmodified boron-doped diamond electrode (BDDE) has been developed. Voltammetric behavior of antimony was investigated in various acidic supporting electrolytes and the most suitable medium for the determination of Sb(III) on bare BDDE has been 6 mol L⁻¹ HClO₄ solution. The analytical performance was studied with differential pulse anodic stripping voltammetry (DPASV) with optimized conditions (deposition potential −1 V vs. Ag/ AgCl and deposition time 240 s). An analysis of possible effects due to the presence of other metal ions (especially As(III)) in the solution was eliminated using NaH₂PO₄ as supporting electrolyte with addition EDTA as selective complexing agent for Sb(III). Speciation of antimony was also investigated. The detection limit of this analytical strategy achieved value of 1.08 × 10⁻⁷ mol L⁻¹. The proposed method was validated and applied for natural water from former antimony mines as real samples.

开发了一种非常简单，快速的电分析方法，用于在化学未修饰的掺硼金刚石电极（BDDE）上检测Sb（III）。在各种酸性支持电解质中研究了锑的伏安行为，最适合用于测定裸BDDE上的Sb（III）的介质是6 mol L ^-1 HClO ₄溶液。使用优化条件（沉积电势-1 V对Ag / AgCl和沉积时间240 s）的差分脉冲阳极溶出伏安法（DPASV）研究了分析性能。使用NaH ₂ PO ₄消除了由于溶液中存在其他金属离子（尤其是As（III））而可能产生的影响的分析EDTA作为辅助电解质，作为Sb（III）的选择性络合剂。还研究了锑的形态。该分析策略的检测极限达到1.08×10 ^-7  mol L ^-1的值。该方法经过验证，可用于原锑矿山的天然水作为真实样品。