MODIFIKASI RESIN Ca-ALGINAT DENGAN ABU JERAMI PADI SEBAGAI MATERIAL PENGISI KOLOM PADA TAHAPAN PRAKONSENTRASI ANALISA ION Mn (II) SECARA OFF- LINE
Abstrak: The modification of
resin Ca - Alginate with rice straw ash as a column filler material for
preconcentration step of Mn(II) ion. Has been done Preconcentration method was
used by off-line method, water samples were passed through the column and
eluted with 0.1 M H2SO4. The eluate was taken and detected by using
Spectrophotometer UV-Visible. Optimum composition of modified resin Rice straw
ash - Ca - Alginat were at 1% Na - Alginate, 0.1 M CaCl2, and 0.5 g rice straw
ash. The result of research shown the optimum condition of retention capacity
ion Mn(II) was 0.08211 mg Mn / gr resin. The best sorption at pH 2, and optimum
condition of eluent concentration 0.1 M H2SO4, sample volume 12 mL and eluent
volume was 5 mL. The analytical performance of this method was good for
determination of ion Mn(II) that could be evaluated by limit of detection about
0.7727 mg/L with the reproducibility level shown by the precentage of the
coefficient variance was 1.179 %. This method could be applicated to determine
ion Mn(II) at the natural water samples from Mahakam river with a recovery
percentage of > 95 %, used spike method that shown this resin is good to
using at preconcentration stage determination of ion Mn(II).
Penulis: Adhi Surya Pranata
Surya Pranata, Bohari Yusuf, Aman Sentosa Panggabean
Kode Jurnal: jpkimiadd140641
