POTENTIOMETRIC BASED LEAD SENSOR TO DETECT THE LEVELS OF LEAD IN BLOOD

Eka Novitasari; Ayu Rahayu Anggraeni; - Muhiroh; Mokhammad W. Dahlan; Ani Mulyasuryani

doi:10.21831/jps.v21i1.10828

POTENTIOMETRIC BASED LEAD SENSOR TO DETECT THE LEVELS OF LEAD IN BLOOD

Eka Novitasari, Ayu Rahayu Anggraeni, - Muhiroh, Mokhammad W. Dahlan, Ani Mulyasuryani

Abstract

This study was aimed at determining the optimal conditions of lead sensor in the development of ion lead sensor to perform the optimization of several parameters such as the number of ionophores and membrane thickness. In this study, a lead sensor based on lead selective electrode was developed. The electrode was modiï¬ ed by adding lead sulï¬ de in chitosan membran as an active agent (ionophores) and superimposed on the surface of SPCE. The amounts of PbS added in chitosan solution were 0.5%, 1%, 1.5%, 2%, and 2.5% (w/v). The thickness of membrane used were 15 Âµm, 20 Âµm, 45 Âµm, and 75 Âµm. The sensors were tested inÂ standard solution at concentration 10 -8 Â M to 10 Â M and at pH 2, 3, 4, and 5. Lead sensor has optimum performance on PbS 1.5%, thickness of membrane on 15 Âµm and pH 4. The Nernst factor obtained was 23.45 mV/decade with the solution concentration range 0.032 ppm to 0.322 ppm.-1

Keywords

Lead in blood; lead sensor; lead sulï¬ de

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DOI: https://doi.org/10.21831/jps.v21i1.10828