Novel electrochemical sensor based on Pt supported multiwalled carbon nanotubes is used for determination of pesticide clomazone in aqueous media via differential pulse stripping voltammetry (DPSV). Since clomazone is stable and readily soluble in water, it is often found in water sources. Hence, its determination in the environment is of utmost importance. Herein, clomazone is determined in 0.1 M phosphate buffer solution at pH 7.0 in the concentration range of 0.61–20.56 ng cm⁻³, with LOQ = 0.61 and LOD = 0.38. These results are in the same range with HPLC/DAD, which is used as comparative method. It is shown that DPSV is a facile and efficient way for determination of clomazone in contrast to precise but field-impractical HPLC. Mechanistic approach in explaining electrode processes is correlated to structural aspects of the synthesized sensor. HRTEM data reveals a uniform distribution of Pt nanoparticles on the MWCNT support as a source of crucial, structural and electronic changes. Furthermore, characterisation of Raman results indicates the existence of structural defects, which is believed to be the leading reason for improvement in sensing response.

基于Pt负载的多壁碳纳米管的新型电化学传感器用于通过差分脉冲溶出伏安法（DPSV）测定水性介质中的杀虫剂广灭灵。由于广灭灵稳定且易溶于水，因此经常在水源中发现。因此，其在环境中的确定至关重要。此处，广灭灵是在0.1 M磷酸盐缓冲溶液中于pH 7.0处测定的，浓度范围为0.61–20.56 ng cm ^-3，LOQ = 0.61，LOD = 0.38。这些结果与用作比较方法的HPLC / DAD在相同范围内。结果表明，与精确但不切实际的HPLC相比，DPSV是一种方便快捷的测定广灭灵的方法。解释电极过程的机械方法与合成传感器的结构方面有关。HRTEM数据揭示了MWCNT载体上Pt纳米颗粒的均匀分布，是关键，结构和电子变化的来源。此外，拉曼结果的表征表明存在结构缺陷，这被认为是改善传感响应的主要原因。