Fadilah, Arisa Nur (2018) ANALISIS BORAKS DALAM SEMPOL DITULUNGAGUNG DENGAN METODE PREPARASI SENTRIFUGASI DAN REFLUKS SECARA SPEKTROFOTOMETRI VISIBLE. Undergraduate thesis, Stikes Karya Putra Bangsa Tulungagung.
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Abstract
Borax is widely used as food additives. According to Permenkes RI Number 033 Year 2012 on food additives, borax is prohibited for food use The purpose of this research is to know optimum condition of borax analysis in sempol in Tulungagung with centrifugation and reflux preparation method and to know borax concentartion in sempol in Tulungagung using visible spectrophotometry method. Performed optimization of borax wavelengths with wavelength variations of 541 nm, 545 nm, and 549 nm. The prepared sample was analyzed using visible spectrophotometry at maximum wavelength. Furthermore, the validation of methods, among others, test linearity, accuracy, and precision. The result of this research is optimum wavelength is 541nm.Based on the validation method that has been done between the preparation of centrifugation and reflux, the method obtained the result of linearity in the concentration range 15ppm; 20ppm; 25ppm; 30ppm; 35ppm with correlation coefficient value R2 equal to 0.9927% recovery centrifugation method is 107.9% while reflux method is 132.7%, and value of precision obtained by centrifugation method is 1.1% while reflux method is 2%. Borax content in sempol samples that have been done quantitative tests with the method of centrifugation is 18.6 ± 0.043ppm and with reflux method is 19.4 ± 0.0860 ppm. Keywords: Borax, Visible Spectrophotometry,Centrifugation, Reflux
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Keywords: Borax, Visible Spectrophotometry,Centrifugation, Reflux |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry R Medicine > R Medicine (General) |
| Divisions: | Program Studi > S1 Farmasi |
| Depositing User: | Surya Hadi Prasetyo |
| Date Deposited: | 11 Jan 2022 02:52 |
| Last Modified: | 11 Jan 2022 02:52 |
| URI: | http://repository.stikes-kartrasa.ac.id/id/eprint/15 |
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