Roshiana, Syafira and Prof. Dr. Ani Mulyasuryani, MS and Barlah Rumhayati, S.Si, M.Si, Ph.D. (2021) Pengembangan Sensor Pb2+ Berbasis SPCE Menggunakan Membran. Sarjana thesis, Universitas Brawijaya.
Abstract
Telah dikembangkan sensor Pb2+ berbasis screen printed carbon electrode (SPCE) menggunakan membran campuran kaolin-PbS. Penelitian ini bertujuan untuk mempelajari pengaruh perbandingan massa kaolin : PbS terhadap kepekaan sensor. Membran dibuat dengan mencampurkan kaolin sebanyak 0,1 gram, PbS 0,02 ; 0,03 ; 0,04 ; 0,06 gram, dan air demineral. Membran dilapiskan pada permukaan elektroda karbon jenis screen printed carbon electrode (SPCE). Pengujian sensor Pb2+ menggunakan larutan baku Pb2+ dalam air demineral dan dalam HNO3 10-3 M pada kisaran konsentrasi 10-8 – 10-1 M. Hasil penelitian menunjukkan bahwa komposisi membran berpengaruh terhadap kepekaan sensor Pb2+. Kinerja terbaik sensor Pb2+ dihasilkan pada perbandingan massa kaolin:PbS 1:0,4. Sensor tersebut memiliki kepekaan 31,39 mV/decade pada kisaran konsentrasi 5x10-4 – 10-2 M dalam HNO3, waktu respon 60 detik, dan batas deteksi 5,24 x 10-4 M.
English Abstract
A screen printed carbon electrode (SPCE) based Pb2+ sensor has been developed using a kaolin-PbS membrane mixture. The aim of this study were to determine the effect of the mass ratio of kaolin: PbS on the sensitivity of the sensor. The membrane was made by mixing 0.1 grams of kaolin, and various of PbS at 0.02; 0.03 ; 0.04 ; 0.06 grams, and demineral water. The membrane was coated on the surface of a screen printed carbon electrode (SPCE) type of carbon electrode. The Pb2+ sensor test used a standard solution of Pb2+ in demineral water and in HNO3 10-3 M in a concentration range of 10- 8 – 10-1 M. The results showed that the membrane composition affected the sensitivity of the Pb2+ sensor. The best performance of the Pb2+ sensor was obtained at a mass ratio of 1:0.4 kaolin:PbS. The sensor has a sensitivity of 31.39 mV/decade in a concentration range of 5x10-4 – 10-2 M in HNO3, a response time of 60 seconds, and a detection limit of 5.24 x 10-4 M.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0521090032 |
| Uncontrolled Keywords: | Pb2+ sensor, screen printed carbon electrode, kaolin. |
| Subjects: | 500 Natural sciences and mathematics > 540 Chemistry and allied sciences |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | agung |
| Date Deposited: | 13 May 2022 03:44 |
| Last Modified: | 18 May 2022 03:48 |
| URI: | http://repository.ub.ac.id/id/eprint/190426 |
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Text (DALAM MASA EMBARGO)
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