Penentuan kadar besi selama fase pematangan padi dengan pengompleks 1,10 - fenantrolin menggunakan spektrofotometer UV-Vis

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.

[img] Text
1411100064-Paper.pdf - Published Version

Download (822kB)
[img] Text
1411100064-Presentation.pdf - Presentation

Download (1MB)
[img] Text
1411100064-Undergraduate_Theses.pdf - Published Version

Download (11MB)

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 > (S1) Undergraduate Theses
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

Actions (login required)

View Item View Item