Studi Co-Precipitation Tembaga (II) Menggunakan Coprecipitant Al(OH)3 pada Sungai Batang Arau Kota Padang Diukur dengan Metoda Spektrofotometri Serapan Atom (SSA)
Abstract: A study in the
development co-precipitation method and natural samples was applied to the
Batang Arau River in Padang City. Sampling was done once in the month of
November 2012, by random sampling on the selected point along the river which
was considered to represent the river. Sampling points taken in the river
upstream Lubuk Paraku Kor were named sample 1, the sampling points in the
middle of the river called hilalang padang besi were called as sample 2, the
third sampling points downstream to the mouth of the river were called the
sample stream 3. The analysis was performed with the optimization of pH and
volume optimization before it was applied to the sample. The result was the
determination of the optimum pH conditions co-precipitant Al(OH)3 with atomic
absorption spectroscopy air acetylene flame occurred at pH 6, the optimum
volume coprecipitant used in the co-precipitation method was the addition of
Al(OH)3 as much as 11 mL. Content of Copper (II) obtained at the optimum
conditions at upstream was 2,22ppm, in the middle of the river was 1,294 ppm
and 1,2 ppm was the content at the river mouth, with an average concentration
factor of 104 times compared to direct measurement without the
co-precipitation. Quality Standards based on PP. 82 Year 2001 Class II was
still in the limited threshold 0,02 ppm.
Keywords: co-precipitation,
coprecipitant Al(OH)3, praconsentration
Penulis: Yusuf, Indang Dewata,
Edi Nasra
Kode Jurnal: jpkimiadd130465
