Dianawati, Novi (2015) Penentuan kadar besi selama fase pematangan padi dengan pengompleks 1,10 - fenantrolin menggunakan spektrofotometer UV-Vis. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Telah dilakukan penelitian mengenai penentuan kadar besi
pada padi selama fase pematangan dan pada lingkungan sekitar
padi yaitu tanah maupun air menggunakan spektrofotometer UVVis.
Sampel padi, tanah, dan air didestruksi terlebih dahulu untuk
mendapatkan ion besi. Pengukuran dilakukan dengan
mereaksikan ion besi dengan pengompleks 1,10-fenantrolin
sehingga terbentuk senyawa kompleks besi(II)-fenantrolin.
Panjang gelombang maksimum yang didapat sebesar 509 nm dan
nilai regresi pada kurva kalibrasi r2 = 0,9951. Terdapat 10 variasi
hari yang berada dalam fase pematangan padi (52 hari, 63 hari,
67 hari, 71 hari, 77 hari, 81 hari, 85 hari, 90 hari, 95 hari, 98 hari)
di setiap sampelnya (padi, tanah, dan air) yang akan dianalisis
kadar besinya. Hasil analisis menunjukkan bahwa kadar besi di
dalam padi memiliki korelasi terhadap kadar besi di dalam tanah
dan tidak memiliki korelasi terhadap kadar besi di dalam air.
Kadar besi tertinggi saat padi berumur 77 hari yaitu sebesar 0,565
mg (564,325 ppm) dan kadar besi terendah saat padi berumur 90
hari yaitu sebesar 0,306 mg (305,983 ppm). ========== Determination of iron during maturation phase and rice
enviromental like soil and water by spectrophotometer UV-Vis
has been done. Rice, soil, and water was destructed to get an iron
ion. The research based on reaction between iron and 1,10-
phenantroline as complexing agent and formed complex
compounds iron (II)-phenantroline. Maximum wavelength was
509 nm and regression value on calibration curve was r2 =
0,9951. There were 10 day variation during maturation rice phase
(52 days, 63 days, 67 days, 71 days, 77 days, 81 days, 85 days, 90
days, 95 days, 98 days) in every sample (rice, soil, and water)
were analyzed total iron. There was total iron correlation between
rice and soil but there was not total iron correlation between rice
and water. The highest total iron was in rice was 77 days that
contained 0,565 mg (564,325 ppm) and the lower total iron was in
rice was 90 days that contained 0,306 (305,983 ppm).
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKi 543.55 Dia p |
| Uncontrolled Keywords: | Besi(II)-fenantrolin, Gabah padi, Kadar besi, Spektrofotometer |
| Subjects: | Q Science > QD Chemistry > QD117.S64 Spectrophotometry |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 09 May 2019 04:49 |
| Last Modified: | 09 May 2019 04:49 |
| URI: | http://repository.its.ac.id/id/eprint/62977 |
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