CARBON PASTE ELECTRODE HEXADECYLTRIMETHYLAMMONIUM BROMIDE MODIFIED NATURAL ZEOLITE FOR CHROMIUM(VI) DETECTION | Zendy

Budi Riza Putra | Zendy; Latifah Kosim Darusman | Zendy; Eti Rohaeti | Zendy

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CARBON PASTE ELECTRODE HEXADECYLTRIMETHYLAMMONIUM BROMIDE MODIFIED NATURAL ZEOLITE FOR CHROMIUM(VI) DETECTION

Author(s) -

Budi Riza Putra,

Latifah Kosim Darusman,

Eti Rohaeti

Publication year - 2013

Publication title -

indonesian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.273

H-Index - 14

eISSN - 2460-1578

pISSN - 1411-9420

DOI - 10.22146/ijc.21294

Subject(s) - chemistry , chromium , detection limit , zeolite , calibration curve , electrolyte , electrode , carbon paste electrode , supporting electrolyte , carbon fibers , bromide , nuclear chemistry , analytical chemistry (journal) , inorganic chemistry , chromatography , cyclic voltammetry , catalysis , composite number , electrochemistry , materials science , organic chemistry , composite material

A simple voltammetric technique for quantification of chromium(VI) is presented in this work. The technique is based on linear sweep voltammetric reduction Cr(VI) on hexadecyltrimethylammonium bromide (HDTMABr) modified Lampung zeolite carbon paste electrode. Selected HDTMABr concentration for natural zeolite modification is obtained 200 mM. Working electrode for chromium(VI) detection is made by graphite, paraffin oil and HDTMABr modified Lampung zeolite. The effect of supporting electrolyte matrix, pH and also scan rate is also investigated. The calibration curve for chromium(VI) detection using the proposed method shows linearity from 0.2 to 1.0 mM with sensitivity, detection and quantification limit, and precision was 0.4294 mM, 3.63 x 10 -4 mM, 1.197 x 10 -3 mM, 4.49%, respectively.

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