一种新型、灵敏的碳糊电极，含有十六烷基三甲基溴化铵表面活性剂和二硫腙的沸石纳米粒子，用于测定锡（II）的伏安法。
A novel and sensitive carbon paste electrode with clinoptilolite nano-particles containing hexadecyltrimethyl ammonium surfactant and dithizone for the voltammetric determination of Sn(II).
机构信息
Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran.
Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran; Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran.
出版信息
J Colloid Interface Sci. 2017 Sep 1;501:321-329. doi: 10.1016/j.jcis.2017.04.068. Epub 2017 Apr 24.
Clinoptilolite nano-particles (CNP) were modified by hexadecyltrimethyl ammonium bromide surfactant (HDTMA) and dithizone (DZ). The modified zeolite was then used for the modification of carbon paste electrode (CPE). The resulted CNP-HDTMA-DZ-CPE was finally used for the voltammetric determination of Sn(II) in aqueous solution. The raw and modified CNP was characterized by SEM-EDX, BET, TG-DTG and FTIR techniques. The best voltammetric response was obtained in 0.1molL NaNO+HCl at pH 2.2 as supporting electrolyte. The electrode showed a linear response in the concentration range of 1×10 to 1×10molLSn(II) with LOD about 9×10molLSn(II). The electrode showed good selectivity and applicability for the determination of Sn(II) in real samples such as river water, an steel company wastewater, tomato paste and a canned tuna fish.
沸石纳米粒子（CNP）经十六烷基三甲基溴化铵（HDTMA）和二硫腙（DZ）修饰后，用于修饰碳糊电极（CPE）。所得的 CNP-HDTMA-DZ-CPE 最终用于水溶液中 Sn(II)的伏安法测定。通过 SEM-EDX、BET、TG-DTG 和 FTIR 技术对原始和改性的 CNP 进行了表征。在以 0.1molL NaNO+HCl 为支持电解质、pH 值为 2.2 的最佳伏安响应条件下，得到了最佳的伏安响应。该电极在 1×10 到 1×10molLSn(II)的浓度范围内呈现线性响应，LOD 约为 9×10molLSn(II)。该电极对河水、钢铁公司废水、番茄酱和金枪鱼罐头等实际样品中 Sn(II)的测定具有良好的选择性和适用性。
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