Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 163, Issue 2-3, Pages 1265-1271Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2008.07.127
Keywords
Laser-induced Breakdown Spectroscopy (LIBS); Cr poisoning and detection; Multi-elemental analysis; Atomic emission plasma spectroscopy; Cr contaminated site remediation; Environmental impact of Cr metal
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Funding
- Physics Departments
- King Fahd University of Petroleum and Minerals (KFUPM) [IN 080410]
- National University of Science and Technology and Government of Pakistan
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Due to large growth in leather and textile industries to cater for the needs of a growing world population, contamination of soil and water resources by chromium has become a great threat for humans and animals. In this work, Laser Induced Breakdown Spectroscopy (LIBS) was applied to monitor the remediation process of soil contaminated with Chromium metal. This study was conducted at a laboratory scale by setting up an experiment in a container holding soil contaminated with chromium. This setup represents actual field conditions where remediation process could be applied and monitored for the removal of toxic metals like Cr. For generation of LIBS spectrum, the plasma was produced by focusing a pulsed Nd:YAG laser at 1064 nm on the soil contaminated with chromium under remediation process. The evaluation of the potential and capabilities of LIBS as a rapid tool for remediation process of contaminated sites is discussed in detail. Optimal experimental conditions were evaluated for improving the sensitivity of our LIBS system for monitoring of remediation process through parametric dependence study. The minimum detection limit of our spectrometer for chromium in soil matrix was 2 mg Kg(-1). (C) 2008 Elsevier B.V. All rights reserved.
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