ALCHEMY Jurnal Penelitian Kimia
Vol 10, No 1 (2014): March

BATCH INJECTION POTENTIOMETRY ASAM ASPARTAT, ASAM GLUTAMAT DAN ARGININ MENGGUNAKAN ELEKTRODA TUNGSTEN OKSIDA

Yeni Maulidah Muflihah (Jurusan Kimia, Fakultas MIPA, Universitas Jember, Jember)
Heny Masruroh (Jurusan Kimia, Fakultas MIPA, Universitas Jember, Jember)
Zulfikar Zulfikar (Jurusan Kimia, Fakultas MIPA, Universitas Jember, Jember)

Article Info

Publish Date
24 May 2018

Abstract

The presence of aspartic acid, glutamic acid and arginine in solution can be detected by potentiometric method using tungsten oxide electrode in a batch system. Characterization of tungsten oxide electrode used include linear range, limit of detection, sensitivity and reproducibility. Buffer type and concentration effect also studied to optimize the measurement results. Optimum conditions for detecting arginine was at pH 6.0 with a phosphate buffer concentration of 0.5 x 10-3 M. Correlation coefficient was obtained for 0.9864, the detection limit of 5.24 x 10-6 M, sensitivity 16.1 mV/decade with reproducibility 0 –7 %. Glutamic acid has a correlation coefficient of 0.9789, the detection limit of 3.80 x 10-6 M, the sensitivity of 9.2 mV/decade and reproducibility of 0 – 6 %. Aspartic acid has a correlation coefficient of 0.9949, the detection limit of 7.76 x 10-6 M, sensitivity of 13.4 mV/decade and reproducibility of 0 – 5 %.

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Journal Info
ALCHEMY Jurnal Penelitian Kimia
Website

Abbrev

alchemy

Publisher

Universitas Sebelas Maret

Subject

Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology

Description

ALCHEMY Jurnal Penelitian Kimia is a chemistry journal published by Sebelas Maret University, Surakarta. ALCHEMY Jurnal Penelitian Kimia publishes original research articles or review articles in organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, biochemistry, and ...