Ramadani, Dhody Pazar (2018) Pengaruh Komposisi Molecularly Imprinted Polymers (MIP) Poli Vinil Alkohol (PVA)-Fe3O4 Terhadap Kinerja Sensor Diazinon. Sarjana thesis, Universitas Brawijaya.
Abstract
Telah dipelajari pengaruh komposisi molecularly imprinted polymers (MIP) sebagai membran reseptor terhadap kinerja sensor diazinon. MIP terbuat dari poli vinil alkohol (PVA) 5 %(w/v), glutaraldehid 4 %(v/v), asam sitrat 5 %(w/v), Fe3O4 5 %(w/v), dan diazinon. Jumlah diazinon yang ditambahkan dalam MIP PVA-Fe3O4 yaitu 0,01% (w/w); 0,02% (w/w); dan 0,03% (w/w). MIP PVA- Fe3O4-diazinon dilapiskan pada permukaan elektroda karbon tipe screen printed carbon electrode (SPCE) dengan ukuran 4,7 cm x 1 cm sebanyak 5 L dan dipanaskan selama 1 jam pada suhu 50 0C. Masing-masing sensor diuji dengan menggunakan larutan diazinon pada rentang konsentrasi 10-12 –10-5 M. Sensor dengan kepekaan terbaik diuji terhadap perubahan pH yaitu pH 1, 2, 3, 4 dan perubahan jenis elektrolit yaitu buffer fosfat pH 2, buffer fosfat-KCl pH 2, HCl pH 2. Hasil penelitian menunjukan komposisi MIP PVA- Fe3O4-diazinon berpengaruh terhadap sensor diazinon. Kepekaan sensor terbaik dihasilkan pada jumlah diazinon dalam MIP PVA- Fe3O4 sebesar 0,02 %(w/w). pH dan jenis elektrolit berpengaruh terhadap kinerja sensor. Kepekaan sensor diazinon terbaik yang dihasilkan sebesar 33,8 mV/dekade pada pH 2, dalam larutan buffer fosfat-KCl dengan rentang konsentrasi 10-12 –10-5 M dengan waktu respon 150 detik.
English Abstract
The effect of the composition molecularly imprinted polymers (MIP) as a receptor membrane on the performance of diazinon sensors has been studied. MIP is made of poly vinyl alcohol (PVA) 5% (w/v), glutaraldehyde 4% (v/v), citric acid 5% (w/v), Fe3O4 5% (w/v), and diazinon. The amount of diazinone added in MIP PVA-Fe3O4 is 0.01% (w/w); 0.02% (w/w); and 0.03% (w/w). MIP PVA-Fe3O4-diazinon was superimposed on the surface of the screen printed carbon electrode (SPCE) type carbon electrode with a size of 4.7 cm x 1 cm as much as 5 L and heated for 1 hour at 50 0C. Each sensor was tested using diazinone solution in the 10-12 –10-5 M concentration range. Sensors with the best sensitivity were tested for pH changes at pH 1, 2, 3, 4 and electrolyte type changes at phosphate buffer pH 2, phosphate buffer-KCl pH 2, HCl pH 2. The results showed that the composition of MIP PVA-Fe3O4-diazinon had an effect on the diazinon sensor. The best sensitivity of the sensor is produced at the amount of diazinone in MIP PVA-Fe3O4 by 0.02% (w/w). The pH and type of electrolyte have an effect on the performance of the sensor. The best sensitivity of the diazinon sensor produced was 33.8 mV/decade at pH 2, in the phosphate-KCl buffer solution with a concentration range of 10-12 –10-5 M with a response time of 150 seconds.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2018/456/051900385 |
| Uncontrolled Keywords: | diazinon, MIP, sensor diazinon |
| Subjects: | 500 Natural sciences and mathematics > 539 Modern physics > 539.6 Molecular physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Endang Susworini |
| Date Deposited: | 19 Jul 2020 07:59 |
| Last Modified: | 31 Jul 2020 04:42 |
| URI: | http://repository.ub.ac.id/id/eprint/168934 |
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