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All Journal Sainstek : Jurnal Sains dan Teknologi
Yollafebrisa Wizul
Jurusan Kimia, Universitas Negeri Padang Jln. Prof. Dr. Hamka Air Tawar Padang - Sumatera Barat
Computer Science & IT Other

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STUDI KOPRESIPITASI Zn2+ MENGGUNAKAN Al(OH)3 SEBAGAI KOPRESIPITAN Dewata, Indang; Nasra, Edi; Wizul, Yollafebrisa
Sainstek : Jurnal Sains dan Teknologi Vol 5, No 1 (2013)
Publisher : IAIN Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (869.978 KB) | DOI: 10.31958/js.v5i1.83

Abstract

Research of study copresipitation Zn2+ using Al(OH)3 as coprecipitant has been done. This study aims to determine the optimum conditions for coprecipitation of Zn2+ by Al(OH)3, and influence of foreign ions. This study uses variation pH about 5,0 ? 10,0;  variation of eluent volume about 8,0 ? 14,0; variation of concentrated HNO3 volume about 1,0 ? 5,0; and variation of concentration Cu2+ about 0,8; 1,2; 1,6; 2,0 and 2,4. Measurement concentration of Zn2+ using Atomic Absorption Spectroscopy (AAS) with wavelength of 213,9 nm. The result showed the optimum conditions occur at pH about 8, 12 mL of eluent and 1 mL of concentrated HNO3 with the absorption capacity of 0,074 mg/g. Meanwhile, the presence of foreign ions such as Cu2+ has influenced the coprecipitated Zn where concentration of the coprecipitated Zn decreased with increasing the concentration of foreign ions.Keywords: coprecipitation, coprecipitant Al(OH)3, trace metal,  Zn, AAS 
Co-Authors Edi Nasra Indang Dewata