Laser-induced breakdown spectroscopy for determination of trace metals in aqueous solution using bamboo charcoal as a solid-phase extraction adsorbent

2012 ◽  
Vol 4 (3) ◽  
pp. 819 ◽  
Author(s):  
Dehua Zhu ◽  
Jianping Chen ◽  
Jian Lu ◽  
Xiaowu Ni
Keyword(s):  
Aqueous Solution ◽  
Trace Metals ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Laser Induced Breakdown Spectroscopy ◽  
Phase Extraction ◽  
Bamboo Charcoal ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

scholarly journals Development of a Method for the Determination of Chromium and Cadmium in Tannery Wastewater Using Laser-Induced Breakdown Spectroscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Mahwish Bukhari ◽  
M. Ali Awan ◽  
Ishtiaq A. Qazi ◽  
M. Anwar Baig
Keyword(s):  
Solid Phase ◽  
Correlation Coefficients ◽  
Sample Surface ◽  
Tannery Wastewater ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Surface Distance ◽  
Laser Induced Breakdown ◽  
Wastewater Samples

This paper illustrates systematic development of a convenient analytical method for the determination of chromium and cadmium in tannery wastewater using laser-induced breakdown spectroscopy (LIBS). A new approach was developed by which liquid was converted into solid phase sample surface using absorption paper for subsequent LIBS analysis. The optimized values of LIBS parameters were 146.7 mJ for chromium and 89.5 mJ for cadmium (laser pulse energy), 4.5 μs (delay time), 70 mm (lens to sample surface distance), and 7 mm (light collection system to sample surface distance). Optimized values of LIBS parameters demonstrated strong spectrum lines for each metal keeping the background noise at minimum level. The new method of preparing metal standards on absorption papers exhibited calibration curves with good linearity with correlation coefficients,R2in the range of 0.992 to 0.998. The developed method was tested on real tannery wastewater samples for determination of chromium and cadmium.

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