PERBANDINGAN METODE SPEKTROFOTOMETRI UV-VIS DAN IODIMETRI DALAM PENENTUAN ASAM ASKORBAT SEBAGAI BAHAN AJAR KIMIA ANALITIK MAHASISWA JURUSAN TEKNOLOGI PERTANIAN BERBASIS OPEN-ENDED EXPERIMENT DAN PROBLEM SOLVING

  • Dodi Iskandar 1Pendididikan Sains, Universitas Negeri Yogyakarta
Keywords: Eudiometry, Spectrophotometry, Ascorbic Acid, Statistical Test

Abstract

This study aims to know the difference through statistical analysis from two methods in determining content of ascorbic acid in tablet (brand CIPI). This experiment is done in twenty repetition. Each of two methods did twelve times. The mass of tablet CIPI is 2,0 gram. Shapiro-Wilk Normality Test shows that the value of spectrophotometry uv-vis is 0.9714 and the value of eudiometry is 0.08261. Both of them is bigger than 0,05. Based on statistical analysis, the both of methods have normal distribution. Then, Paired T-Test is applied. The result shows that hypothesis (Ho) is accepted. This means that two method have no real difference.

References

Badriyah, L; Manggara, A.B. (2015). Penetapan Kadar Vitamin C pada Cabai Merah (CapsicumAnnum L.) Menggunakan Metode Spektrofotometri Uv-Vis. Jurnal Wiyata, 2(1).
Cioabla, A.E. (2013). Spectrophotometry. Principle And Applications. www.envirobanat.ro, 10 April 2017.
Geleta, G.S & Bekele, D.A. (2015). Iodometric Determination of the Ascorbic Acid (Vitamin C) content of some Fruits consumed in Jimma Town Community in Ethiopia. Research Journal of Chemical Sciences. 5(1): 60-63.
Hacisevki, A. (2009). An Overview Of Ascorbic Acid Biochemistry. J. Fac. Pharm, 38(3): 233-255.
Handbook Spectrofotometry. (2017). www.gelifesciences.com, 19 April 2017.
Lai, E.R. (2011). CriticalThinking: A Literature Review.
Maniyar, S.A.; Jargar, J.G.; Das S.N.; Dhundasi S.A.; and Das K.K. (2012). Alteration of Chemical Behavior of L-ascorbic Acid in Combination with Nickel Sulfate at Different pH Solutions in Vitro. Asian Pac J Trop Biomed. 2(3): 220-222.
Pursitasari, I.D.; Permanasari, A., dan Hendayana. (2012). Efektivitas Model Perkuliahan dengan Open-Ended Experiment Bersetting Investigasi Kelompok Pada Topik Analisis Kimia Kuantitatif. Jurnal Pendidikan Matematika, FKIP Universitas Muhammadiyah Metro. 5(1):13-24.
Sujana, Y. (2013). Modul R. yudiantosujana.blog.uns.ac.id/files/2013/06/Modul-R.pdf, 1 November 2017.
Published
2017-08-01