Supriyanto, Supriyanto and Kiswandono, Agung Abadi (2017) PENGARUH HNO3 PADA ANALISIS Cr(III) MENGGUNAKAN ASAM TANAT SECARA SPEKTROFOTOMETRI ULTRAUNGU-TAMPAK. Analit: Analytical and Environmental Chemistry, 2 (2). pp. 68-78. ISSN 2540-8224

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Abstract

The negative impacts of the development of industries are the increasing concentrations of contaminants in the environment, such as chromium (Cr). There are two most common chromium species found in the environment; it is Cr (III) and Cr (VI) ions. The analysis method of Cr (III) by using the formation of complex with tannic acid is influenced by acid/base conditions. Based on the result of this research, it was found that the best concentration of nitric acid addition to complex Cr (III) - tannic acid was 4 mM, with the time to achieve stability was after 5 min. There is no change in the complex with the addition of nitric acid at concentration ≥4 ppm.

Item Type:	Article
Subjects:	Q Science > QD Chemistry
Divisions:	Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User:	Dr Agung Abadi Kiswandono
Date Deposited:	25 Jun 2018 02:24
Last Modified:	25 Jun 2018 02:24
URI:	http://repository.lppm.unila.ac.id/id/eprint/7610

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