化学
电极
检出限
工作电极
色谱法
基质(化学分析)
电分析法
分析化学(期刊)
电解质
电位滴定法
物理化学
作者
Thalles Pedrosa Lisboa,Guilherme Figueira Alves,Lucas V. de Faria,Cassiano Cunha de Souza,Maria Auxiliadora Costa Matos,Renato Camargo Matos
出处
期刊:Talanta
[Elsevier]
日期:2022-05-27
卷期号:247: 123610-123610
被引量:19
标识
DOI:10.1016/j.talanta.2022.123610
摘要
This paper describes a simple and cost-effective method for manufacturing a 3D-printed electrode. This electrode presented a similar design to commercial electrodes, where a stereolithography printer was used to build the electrode body using an acrylic resin. The electroactive surface was filled by a 3D-pen using a carbon black integrated polylactic acid (CB/PLA) conductive filament. After a simple and fast (400 s) surface treatment, the 3D-printed CB/PLA electrode was combined with Differential Pulse Voltammetry (DPV) technique for sulfanilamide (SAA) determination. The developed electroanalytical method was applied to breast milk, synthetic urine, and otologic solution samples, showing excellent analytical performance with a detection limit of 12 nmol L-1, wide linear range from 1 to 39.2 μmol L-1, and good precision (RSD = 1.8%, n = 10). In addition, the sensor provides fantastic selectivity towards other antibiotic classes, and when applied in spiked samples, recovery values between 93 and 108% were obtained, which demonstrated good accuracy as well as the absence of matrix effect. It is highlighted that no laborious sample preparation steps were required (simple dilution in supporting electrolyte). Thus, the proposed 3D-printed device proves to be a promising analytical tool for routine analysis.
科研通智能强力驱动
Strongly Powered by AbleSci AI