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All Journal Molekul: Jurnal Ilmiah Kimia
Elvian Eka Krisnaniningrum
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Chemical Sensor for Detection of Lead Levels in Herbal Medicine Ani Mulyasuryani; Yuniar Ponco Prananto; Elvian Eka Krisnaniningrum
Molekul Vol 16, No 2 (2021)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.131 KB) | DOI: 10.20884/1.jm.2021.16.2.727

Abstract

A new tube type Pb2+ sensor made from two types of mixtures, namely clay-PbI2 and chitosan-PbI2 were prepared. An electromotive force (EMF) with Ag/AgCl as the reference electrode was used as the output signal. The highest performance of the Pb2+ sensor from clay-PbI2 was obtained at Pb2+ solutions in HNO3 and pH 3 with sensor sensitivity of 20.67 mV/decade. The highest performance of the Pb2+ sensor from chitosan-PbI2 was obtained at Pb2+ solutions in demineralized water with sensor sensitivity of 32.49 mV / decade. Application of the two sensors on several commercial herbal samples resulted in an average recovery of 85.62% and 94.10% for sensor from chitosan-PbI2 and clay-PbI2, respectively
Co-Authors Ani Mulyasuryani Yuniar Ponco Prananto