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http://repository.ipb.ac.id/handle/123456789/169135| Title: | Validasi Metode dan Estimasi Ketidakpastian Pengukuran Analisis Kadar Zink dalam Konsentrat ZnS Menggunakan ICP-OES. |
| Other Titles: | Validation Method for and Measurement Uncertainty Estimation for Zink Content Analysis in ZnS Concentrate by ICP-OES. |
| Authors: | Laila, Farida Suryakusuma, Rahmat Sidiq |
| Issue Date: | 2025 |
| Publisher: | IPB University |
| Abstract: | Konsentrat zink sulfida (ZnS) merupakan hasil dari flotasi dengan bahan
baku mineral bijih sulfida. ZnS digunakan untuk industri otomotif, kontruksi, dan
baterai ringan. Kadar minimum zink dalam konsentrat ZnS yang dipersyaratkan
berdasarkan Keputusan Menteri Perdagangan Republik Indonesia adalah = 51%.
Kadar Zn dianalisis menggunakan instrumen ICP-OES yang memiliki kelebihan
sensitivitas tinggi, selektivitas yang baik, serta rentang dinamis yang luas. Metode
ini perlu divalidasi dan ditentukan ketidakpastiannya agar memberikan data yang
valid dan dapat dipercaya untuk penentuan kadar zink sebagai persyaratan ekspor.
Parameter validasi metode meliputi linearitas, batas deteksi, batas kuantitasi,
akurasi, presisi diperoleh hasil secara berturut-turut (r) = 0,9998; 1,9614 mg/L;
6,5381 mg/L; 99,85%; dan 0,58%; Uji ketahanan dan ketangguhan menggunakan
uji t tidak memberikan hasil yang berbeda nyata, serta ketidakpastian pengukuran
sebesar 1,45%. Penentuan kadar zink dalam konsentrat ZnS menghasilkan data
yang valid dan rentang ketidakpastian yang dapat dipercaya sehingga dapat
digunakan sebagai metode penentuan kadar zink untuk ekspor Zinc sulfide concentrate (ZnS) is a flotation product derived from sulfide ore minerals. It is widely used in the automotive, construction, marine, and lightweight battery industries. According to the Decree of the Minister of Trade of the Republic of Indonesia, the minimum zinc content required in ZnS concentrate is = 51%. The zinc content was analyzed using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES), which offered high sensitivity, good selectivity, and a wide dynamic range. The method was validated and uncertainty to ensure that it provided accurate and reliable data for determining zinc content in compliance with export regulations. Validation parameters included linearity, limit of detection (LOD), limit of quantification (LOQ), accuracy, and precision, with the following results obtained: (r) = 0.9998; 1.9614 mg/L; 6.5381 mg/L; 99.85%; and 0.58%, respectively. Robustness and ruggedness were evaluated using the ttest, which indicated no significant differences, and the measurement uncertainty was determined to be 1.45%. The results confirmed that the method provided valid data and a reliable range of uncertainty, was suitable for determining zinc content in ZnS concentrate for export purposes. |
| URI: | http://repository.ipb.ac.id/handle/123456789/169135 |
| Appears in Collections: | UT - Chemistry Analysis |
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| cover_J0312211156_5b9189820ca04d9bba3025d903dd7361.pdf | Cover | 2.68 MB | Adobe PDF | View/Open |
| fulltext_J0312211156_d005e9c2e6a94a9f954bf07ae11e6827.pdf Restricted Access | Fulltext | 3.47 MB | Adobe PDF | View/Open |
| lampiran_J0312211156_22e883ca0e764ba4bde622ddbc1d0a15.pdf Restricted Access | Lampiran | 2.57 MB | Adobe PDF | View/Open |
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