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Clinoptilolite‐based Conductometric Sensors for Detection of Ammonium in Aqueous Solutions
Electroanalysis ( IF 2.7 ) Pub Date : 2020-06-03 , DOI: 10.1002/elan.202060026
Olga Saiapina 1 , Yelyzaveta Vronska 2 , Sergei Dzyadevych 1, 3 , Nicole Jaffrezic‐Renault 4
Affiliation  

New clinoptilolite‐based conductometric sensors were developed and optimized for selective detection of ammonium in the buffered aqueous solutions. The sensors’ selective elements were prepared by subsequent drop‐casting of zeolite and Nafion on the gold electrode surface. Electrochemical impedance spectroscopy and differential conductometry were used to investigate the sensor performance. As determined in the phosphate buffer solution, the detection limit of the sensors was 30 μM and the linear range 0–1.5 mM. The developed sensors were featured with a simple preparation procedure, high selectivity to urn:x-wiley:10400397:media:elan202060026:elan202060026-math-0001 , and storage stability for not less than 126 days.

中文翻译:

基于斜发沸石的电导传感器可检测水溶液中的铵

新开发并优化了基于斜发沸石的电导传感器,用于选择性检测缓冲水溶液中的铵。传感器的选择性元素是通过随后在金电极表面上滴铸沸石和Nafion制备的。电化学阻抗谱和差分电导法用于研究传感器性能。根据磷酸盐缓冲溶液中的测定,传感器的检出限为30μM,线性范围为0-1.5 mM。所开发的传感器具有制备过程简单,选择性高骨灰盒:x-wiley:10400397:media:elan202060026:elan202060026-math-0001 和储存稳定性不少于126天的特点。
更新日期:2020-06-03
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