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Zul Afkar
Jurusan Kimia FMIPA, Universitas Negeri Padang
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Efektifitas Al(OH)3 Sebagai Copresipitant Pada Penentuan Logam Kadmium Dalam Air Sungai Batang Arau Menggunakan Spektrometer Serapan Atom Melida Selvita; Zul Afkar; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.339 KB) | DOI: 10.24036/p.v2i1.1932

Abstract

Telah dilakukan penelitian tentang efektifitas Al(OH)3 sebagai coprecipitant pada penentuan kadar logam kadmium dalam air sungai Batang Arau menggunakan Spektrofotometri Serapan Atom (SSA). Penelitian dilakukan dua tahap, pertama penentuan kondisi optimum dan kedua aplikasi kondisi optimum pada sampel air sungai. Kondisi optimum coprecipitant yang didapat setelah pengukuran dengan SSA yaitu pada pH 7 dan volume Al3+ 0,2 M 11 mL. Kandungan kadmium dalam sampel air sungai Batang Arau dengan kopresipitasi pada bagian hulu 0,3385 mg/L, tengah 0,34625 mg/L dan hilir 0,3575 mg/L, sedangkan tanpa kopresipitasi -0,039 mg/L, -0,028 mg/L, -0,049 mg/L. Hasil ini menunjukkan bahwa coprecipitant Al(OH)3 dapat digunakan untuk mendeteksi trace metal dalam suatu sampel.
ANALISIS TEMBAGA (Cu) DAN TIMAH (Sn) DALAM JAGUNG (Zea mays L.) KEMASAN KALENG SECARA SPEKTROFOTOMETRI SERAPAN ATOM Fanny Novelia Ningsih; Zul Afkar; Bahrizal Rizal
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.214 KB) | DOI: 10.24036/p.v2i2.3030

Abstract

Corn (Zea mays L.) is one of the most important food crop in the world. Now a days, there is development in production of canned corn. The media growing corn is possible if using sand and canned, a canned that has possiblity to heavy metal contamination in product of canned corn. This research has purpose to know some kind of solution and volume of best solution in analysis of copper and tin inside canned corn by using atomic absorption spectrofotometry. This research use a wet metode of destruction, the destruction process using the solvent variation: HNO3 p.a, HCl p.a, aquaregia and volume variation : 40, 50, 60 ml. The results of this study showed the highest copper and tin content in the corn canned obtained by using HNO3 p.a 50 ml. The copper contamination use solution HNO3 p.a 50 ml values are 2,4596 mg/kg (Xa), 1,46684 mg/kg (Xb), 1,9882 mg/kg (Y), and 0,9609 mg/kg (Z). The tin contamination use solution HNO3 p.a 50 ml values are 7,5086 mg/kg (Xa), 7,0153 mg/kg (Xb), 6,6779 mg/kg (Y), and 8,1854 mg/kg (Z). The closer to the expary date, the higher values of heavy metal contamination.
Co-Authors Bahrizal Rizal Edi Nasra Fanny Novelia Ningsih Melida Selvita