ANGELINA KLAUDIA, . (2022) IMMOBILISASI DITIZON DALAM MEMBRAN POLIVINIL KLORIDA UNTUK ANALISIS TEMBAGA. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Metode analisis yang sederhana, murah dan ramah lingkungan untuk menentukan Cu(II) dalam air telah dikembangkan dengan immobilisasi ditizon dalam matriks PVC dan Dioctyl Phthalate (DOP) sebagai pemlastis dalam pelarut Tetrahidrofuran (THF). Penelitian ini dimulai dengan pembuatan membran sensor kemudian dilakukan pengujian absorbansi membran sensor menggunakan Spektrofotometri UV-Vis. Selanjutnya dilakukan validasi metode analisis menggunakan spektrofotometri serapan atom, dan dilanjutkan ke tahap karaterisasi membran sensor menggunakan SEM dan FTIR. Setelah berinteraksi dengan larutan Cu(II), membran sensor berubah warna dari hijau menjadi oranye, karena terbentuk kompleks Cu(II)-Ditizon. Respon optimum membran sensor diperoleh pada pH 2,8 dengan λmaksimum 427 nm. Ukuran membran sensor yang digunakan adalah 0,8 cm x 2 cm, dengan volume sampel 2 mL pada rentang konsentrasi 0-0,6 ppm. Hasil validasi metode analisis Cu(II) menggunakan membran sensor memiliki linearitas dengan R2= 0,9924 pada rentang 0,0-6 mg L-1. Absorptivitas molar 9,4831 x 104 L mol-1 cm-1 serta Batas deteksi metode 1,9881 10-3 mg L-1 dan batas kuantifikasi sebesar 6,0245 x 10-3 mg L-1. Pada penelitian ini diperoleh persen perolehan kembali menggunakan spektrofotometri UV-Vis dan Spektrofotometri Serapan Atom sebesar 98,63-101,15% dan 100,26-100,29%. Tembaga yang ditemukan dalam air minum tidak melebihi batas persyaratan kualitas air minum menurut PERMENKES RI Nomor:492/MENKES/PER/IV/2010. ************************************ A simple, inexpensive and environmentally friendly analytical method for determining Cu(II) in water has been developed by immobilizing dithizone in PVC matrix and Dioctyl Phthalate (DOP) as a plasticizer in the solvent Tetrahydrofuran (THF). This research began with the manufacture of the sensor membrane and then tested the absorbance of the sensor membrane using UV-Vis Spectrophotometry. Furthermore, validation of the analytical method was carried out using atomic absorption spectrophotometry and continued to the sensor membrane characterization stage using SEM and FTIR. After interacting with Cu(II) solution, the sensor membrane changes color from green to orange, due to the formation of Cu(II)-Ditizon complex. The optimum response of the sensor membrane was obtained at pH 2.8 with a maximum of 427 nm. The size of the sensor membrane used is 0.8 cm x 2 cm, with a sample volume of 2 mL in a concentration range of 0-0.6 mg L-1. The results of the validation of the Cu(II) analysis method using a sensor membrane have linearity with R2 = 0.9924 in the range of 0.0-6 mg L-1. Molar absorptivity 9.4831 x 104 L mol-1 cm-1 and method detection limit 1.9881 x 10-3 mg L-1 and quantification limit of 6,0245 x 10-3 mg L-1. In this study, the percent recovery using UV-Vis spectrophotometry and Atomic Absorption Spectrophotometry was 98.63-101.15% and 100.26-100.29%. Copper found in drinking water does not exceed the limits for drinking water quality requirements according to PERMENKES RI Number: 492/MENKES/PER/IV/2010.
Item Type: | Thesis (Sarjana) |
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Additional Information: | 1). Prof. Dr. Erdawati, M.Sc.; 2). Yussi Pratiwi, M.Sc. |
Subjects: | Sains > Kimia |
Divisions: | FMIPA > S1 Kimia |
Depositing User: | sawung yudo |
Date Deposited: | 28 Oct 2024 03:53 |
Last Modified: | 28 Oct 2024 03:53 |
URI: | http://repository.unj.ac.id/id/eprint/51768 |
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