Determination of hydroquinone in beverages using colorimetric and electrochemical sensors on paper-based device

IF 1.8 4区化学 Q3 CHEMISTRY, ANALYTICAL Analytical Sciences Pub Date : 2024-08-10 DOI:10.1007/s44211-024-00638-z

Chanya Punthama, Chim Math, Wijitar Dungchai

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Abstract

Hydroquinone (HQ) is a phenolic compound used in industry processes. We aim to demonstrate a rapid and simple procedure for the determination of HQ. This work has developed two techniques, including colorimetric and electrochemical sensors on paper-based devices. Firstly, we have developed the colorimetric detection for the rapid screening test of HQ using 1.5% 4-(dimethylamino) benzaldehyde with alkaline condition (5 M NaOH). Under suitable conditions, the calibration curve between the intensity and HQ concentration was in the range of 50–500 mg L⁻¹. Then, we developed a multi-walled carbon nanotube/graphene oxide/copper/palladium/platinum (MWCNT/GO/Cu/Pd/Pt) onto a screen-printed carbon electrode (SPCE). The optimal amount of MWCNT/GO/Cu/Pd/Pt nanomaterial is 2 mg for HQ detection. The linear concentration range was found in the range 1 to 20 mg L⁻¹ and a detection limit was found to be 0.40 mg L⁻¹ (3.6 µM) for HQ. Moreover, the proposed device can be applied to determine HQ in real samples and is inexpensive technique, portable, and low consumer time.

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在纸质装置上使用比色法和电化学传感器测定饮料中的对苯二酚。

对苯二酚（HQ）是一种用于工业加工的酚类化合物。我们旨在展示一种快速、简单的 HQ 测定程序。这项工作开发了两种技术，包括基于纸质装置的比色和电化学传感器。首先，我们利用 1.5% 4-（二甲基氨基）苯甲醛和碱性条件（5 M NaOH）开发了用于快速筛选测试 HQ 的比色检测方法。在合适的条件下，色度与 HQ 浓度的校正曲线范围为 50-500 mg L-1。然后，我们在丝网印刷碳电极（SPCE）上开发了多壁碳纳米管/氧化石墨烯/铜/钯/铂（MWCNT/GO/Cu/Pd/Pt）。在检测 HQ 时，MWCNT/GO/Cu/Pd/Pt 纳米材料的最佳用量为 2 毫克。其线性浓度范围为 1 至 20 mg L-1，HQ 的检测限为 0.40 mg L-1（3.6 µM）。此外，所提出的装置可用于检测真实样品中的 HQ，而且技术成本低廉、携带方便、耗时少。

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来源期刊

Analytical Sciences 化学-分析化学

CiteScore

2.90

自引率

18.80%

发文量

232

审稿时长

1 months

期刊介绍： Analytical Sciences is an international journal published monthly by The Japan Society for Analytical Chemistry. The journal publishes papers on all aspects of the theory and practice of analytical sciences, including fundamental and applied, inorganic and organic, wet chemical and instrumental methods. This publication is supported in part by the Grant-in-Aid for Publication of Scientific Research Result of the Japanese Ministry of Education, Culture, Sports, Science and Technology.