Masruroh, Khofifa Indar and Prof. Akhmad Sabarudin, S.Si., M.Sc., Dr.Sc., and Layta Dinira, S.Si., M.Si., (2024) Deteksi Cr(VI) dalam Limbah Industri Electroplating dengan 1,5-Difenilkarbazida menggunakan Microfluidic Paper-Based Analytical Devices (µPADs) Berbasis Jarak Rambatan Reaksi. Sarjana thesis, Universitas Brawijaya.
Abstract
Pencemaran lingkungan yang terjadi pada ekosistem perairan maupun darat merupakan permasalahan yang serius. Sebagian besar penyebab pencemaran lingkungan yang terjadi yakni akibat paparan logam berat seperti Cr (VI). Sumber utama paparan Cr(VI) berasal dari limbah kegiatan industri yang langsung dibuang tanpa adanya pengolahan lebih lanjut. Industri dengan pemanfaatan kromium yang sering dijumpai yakni pelapisan logam atau electroplating. Metode analisis yang umum digunakan untuk deteksi Cr(VI) masih memiliki beberapa keterbatasan seperti biaya yang tinggi, pengujian sampel harus dilakukan di dalam laboratorium dan tidak dapat dilakukan secara langsung. Penelitian ini dilakukan untuk mengembangkan metode deteksi Cr(VI) menggunakan Microfluidic Paper-Based Analytical Devices (µPADs) berbasis jarak rambatan reaksi. Reagen yang digunakan yakni 1,5-Difenilkarbazida dan anhidrida ftalat 0,7 M untuk memberikan suasana asam. Polietilen glikol dan EDTA ditambahkan untuk meningkatkan hasil deteksi. Kondisi optimum yang diperoleh untuk deteksi Cr(VI) yakni reagen 1,5-Difenilkarbazida 0,13 M dengan volume 6 µL, Polietilen Glikol 5%, EDTA 0,1 M dan waktu reaksi selama 20 menit. Hasil validasi metode diantaranya uji lineritas diperoleh koefisien determinasi (R ) sebesar 0,9894. Uji presisi didapatkan nilai %RSD sebesar 2,830%. Uji akurasi pada tiga sampel diperoleh nilai % akurasi pada sampel 1 sebesar 96,020%; sampel 2 sebesar 97,404%; dan sampel 3 sebesar 93,059%
English Abstract
Environmental pollution that occurs in aquatic and terrestrial ecosystems is a serious problem. Most of the causes of environmental pollution that occur are due to exposure to heavy metals such as Cr (VI). The main source of Cr(VI) exposure comes from industrial activity waste that is directly disposed of without further treatment. Industries with chromium utilization that are often found are electroplating. Commonly used analytical methods for Cr(VI) detection still have several limitations such as high costs, sample testing must be done in the laboratory and cannot be done directly. This research was conducted to develop a Cr(VI) detection method using Microfluidic Paper-Based Analytical Devices (µPADs) based on reaction propagation distance. The reagents used were 1,5Diphenylcarbazide and 0.7 M phthalic anhydride to provide an acidic atmosphere. Polyethylene glycol and EDTA were added to improve the detection yield. The optimum conditions obtained for Cr(VI) detection were 0,13 M 1,5-Diphenylcarbazide with a volume of 6 µL, 5% Polyethylene Glycol, 0,1 M EDTA and reaction time for 20 minutes. The results of method validation include the linerity test obtained the coefficient of determination (R ) of 0,9894. Precision test obtained %RSD value of 2,830%. The accuracy test on three samples obtained the % accuracy value in sample 1 of 96,020%; sample 2 of 97,404%; and sample 3 of 93,059%.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 052409 |
| Uncontrolled Keywords: | Kromium (VI), 1,5-Difenilkarbazida, Microfluidic Paper-Based Analytical Devices (µPADs), Electroplating. -Chromium (VI), 1,5-Diphenylcarbazide, Microfluidic Paper-Based Analytical Devices (µPADs), Electroplating |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Unnamed user with username nova |
| Date Deposited: | 09 Sep 2024 06:53 |
| Last Modified: | 09 Sep 2024 06:53 |
| URI: | http://repository.ub.ac.id/id/eprint/225197 |
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