Studi Kopresipitasi Zn2+ Menggunakan Al(OH)3 sebagai Kopresipitan
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.
Penulis: Yollafebrisa Wizul,
Indang Dewata, Edi Nasra
Kode Jurnal: jpkimiadd130515
