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Abstract
The buildup of methylparaben (MP), a broad-spectrum antimicrobial preservative with endocrine-disrupting properties, in aquatic systems has become a significant concern due to its adverse health effects. Hence, introducing inexpensive and easy-to-use monitoring devices for quantifying MP is highly desirable. Thus, Zn-BTC metal-organic framework (MOF) and multi-walled carbon nanotubes (MWCNTs) functionalized with β-Cyclodextrin (β-CD) were utilized to modify the matrix of a carbon paste electrode (CPE). The morphological and electrochemical characteristics of β-CD-MWCNTs/Zn-BTC/CPE were evaluated using conventional material characterization techniques and electroanalytical methods. The sensor exhibited two linear current responses in concentration ranges of 0.01 mM to 0.3 mM and 0.3 mM to 6 mM. The limit of detection (LOD) was calculated to be 3.8 μM. The device demonstrated excellent selectivity, repeatability, reproducibility, and stability over two weeks. Evaluating its applicability in real samples achieved recoveries in the range of 96.25% to 105%, proving its reliability in environmental and industrial applications.
Published Version
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