"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Study of geometrical effect of sample cell on nitrite determination

ABUBAKAR1, N. ARSAD1,2,* , M. S. AB-RAHMAN1, A. A. EHSANb2, S. SHAARI2, R. OTHAMAN3

Affiliation

  1. Department of Electrical, Electronic and System Engineering, The National University of Malaysia, Selangor, Malaysia
  2. Photonics Laboratory, Institute of Microengineering and Nanoelectronics, The National University of Malaysia, Selangor, Malaysia
  3. School of Chemical Sciences and Food Technology, The National University of Malaysia, Selangor, Malaysia

Abstract

The effect of cell geometry was studied for nitrite determination by using absorbance spectroscopy. Two cells with different geometry were used, one was flow injection cell in the form of a cylinder-shaped tube, and the other one was cuvette cell in the form of a tube with square cross section. Samples with varied concentration were formed in colorimetric using greiss reagent method. The maximum absorbance was found to be around 540nm for both methods. For overall comparison, flow injection exhibits higher absorbance, better linearity in the calibration curve and lower error as compared to the cuvette. This is due to the geometry of flow injection that can reduce the reflection and scattering of light. Both cells fall on moderate Savvin’s sensitivity with flow injection has been more sensitive that cuvette..

Keywords

Flow injection, Cuvette, Absorbance, Colorimetric, Nitrite, Greiss reagent.

Submitted at: Sept. 8, 2014
Accepted at: Nov. 13, 2014

Citation

ABUBAKAR, N. ARSAD, M. S. AB-RAHMAN, A. A. EHSANb, S. SHAARI, R. OTHAMAN, Study of geometrical effect of sample cell on nitrite determination, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 11-12, pp. 1487-1492 (2014)