Synthesis, Characterization, and Electrochemical Applications of a New Lawsone Molecule: Potentiometric Determination of Cr(III) Ions with Low Detection Limit

IF 2 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY ChemistrySelect Pub Date : 2025-03-28 DOI:10.1002/slct.202500746

Oguz Özbek, Mehmet Emin Cakmak, Kıymet Berkil Akar, Ömer Isildak

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Abstract

In this study, a new lawsone derivative molecule (2) was synthesized, and sensors were prepared using it as electroactive material (ionophore). These sensors exhibited selectivity towards Cr³⁺ ions among different cationic species. The polymer membrane contained 3.0% ionophore, 64.0% dibutyl phthalate (DBP), 32.0% polyvinylchloride (PVC) and 1.0% lipophilic additive (KTpClPB). For this novel potentiometric sensor, linear concentration range, Nernstian slope, detection limit, pH working range and response time were determined as 1.0 × 10⁻¹–1.0 × 10⁻⁷ M, 21.8 ± 1.7 mV/decade, 7.65 × 10⁻⁸ M, 5.0–9.0 and 8 s, respectively. The analytical application of the sensor was carried out by determining Cr³⁺ in samples to which certain amounts of Cr³⁺ ions were added. The newly developed sensor was able to determine Cr³⁺ ions in different samples with very high recoveries.

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一种新型Lawsone分子的合成、表征及电化学应用：低检出限电位法测定Cr（III）离子

本研究合成了一种新的lawsone衍生物分子(2)，并将其作为电活性材料（离子载体）制备了传感器。这些传感器在不同阳离子中对Cr3+离子表现出选择性。聚合物膜含3.0%的离子载体、64.0%的邻苯二甲酸二丁酯（DBP）、32.0%的聚氯乙烯（PVC）和1.0%的亲脂添加剂（KTpClPB）。该传感器的线性浓度范围为1.0 × 10−1 ~ 1.0 × 10−7 M，纳恩斯蒂斜率为21.8±1.7 mV/ 10年，检出限为7.65 × 10−8 M, 5.0 ~ 9.0 s，响应时间为8 s。该传感器的分析应用是通过测定加入一定量Cr3+离子的样品中的Cr3+来实现的。新开发的传感器能够以非常高的回收率测定不同样品中的Cr3+离子。

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来源期刊

ChemistrySelect Chemistry-General Chemistry

CiteScore

3.30

自引率

4.80%

发文量

1809

审稿时长

1.6 months

期刊介绍： ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.