Yusuf, Yulizar and Loekman, Umiati and Farit, Efrizon (2010) PENENTUAN ASAM ASKORBAT SECARA SPEKTROFOTOMETRI MENGGUNAKAN PENGOMPLEK O-FENANTROLIN. JUMPA JURNAL MATEMATIKA DAN PENGETAHUAN ALAM, 6 (1). ISSN 0853-0033
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Abstract
Determination of, ascorbic acid with o-phenanthroline have been spectrophotometrically . Optimum condition was found at 1,.: 5.08 trffi, pH 5.0 - 6.0 reaction completion, after l0 minutes. The method have been used to determine the concentration of ascorbic acid in citrus fruits from Malee (guana juice). The result showed that fruit contained 227.6 ppm ascorbic acid with recov�ry of 100.96%, and relative standard deviation of 1.35%.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Unit atau Lembaga: | Fakultas MIPA > Kimia Paca Sarjana > Doktor > Fakultas MIPA > Kimia Fakultas MIPA > Kimia |
| Depositing User: | S.Si Fitria Ramona |
| Date Deposited: | 02 Jul 2010 07:33 |
| Last Modified: | 22 Sep 2011 05:07 |
| URI: | http://repository.unand.ac.id/id/eprint/3280 |
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