单壁碳纳米管（SWCNTs）作为全固态高氯酸盐离子选择性电极中的固体接触：在烟花和推进剂分析中的应用

Single-Walled Carbon Nanotubes (SWCNTs) as Solid-Contact in All-Solid-State Perchlorate ISEs: Applications to Fireworks and Propellants Analysis.

作者信息

Hassan Saad S M, Galal Eldin Ahmed, E Amr Abd El-Galil, A Al-Omar Mohamed, H Kamel Ayman

机构信息

Chemistry Department, Faculty of Science, Ain Shams University, 11566 Abbasia, Cairo, Egypt.

Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.

出版信息

Sensors (Basel). 2019 Jun 14;19(12):2697. doi: 10.3390/s19122697.

DOI:10.3390/s19122697

PMID:31208022

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6630701/

Abstract

Herein, we present reliable, robust, stable, and cost-effective solid-contact ion-selective electrodes (ISEs) for perchlorate determination. Single-walled carbon nanotubes (SWCNTs) were used as solid-contact material and indium (III) 5, 10, 15, 20-(tetraphenyl) porphyrin chloride (In-porph) as an ion carrier. The sensor exhibited an improved sensitivity towards ClO ions with anionic slope of -56.0 ± 1.1 (R = 0.9998) mV/decade over a linear range 1.07 × 10 - 1.0 × 10 M and detection limit of 1.8 × 10 M. The short-term potential stability and the double-layer capacitance were measured by chronopotentiometric and electrochemical impedance spectroscopy (EIS) measurements, respectively. The sensor is used for ClO determination in fireworks and propellant powders. The results fairly agree with data obtained by ion chromatography.

摘要

在此，我们展示了用于高氯酸盐测定的可靠、耐用、稳定且具有成本效益的固体接触离子选择性电极（ISEs）。单壁碳纳米管（SWCNTs）用作固体接触材料，氯化铟（III）5, 10, 15, 20 -（四苯基）卟啉（In - porph）用作离子载体。该传感器对ClO离子表现出更高的灵敏度，在1.07×10 - 1.0×10 M的线性范围内，阴离子斜率为 - 56.0±1.1（R = 0.9998）mV/十倍浓度变化，检测限为1.8×10 M。短期电位稳定性和双层电容分别通过计时电位法和电化学阻抗谱（EIS）测量。该传感器用于烟花和推进剂粉末中ClO的测定。结果与离子色谱法获得的数据相当吻合。