Journal
ANALYTICAL LETTERS
Volume 48, Issue 3, Pages 442-452Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00032719.2014.947534
Keywords
Pulverized banana peel; Heavy metals; Solid phase extraction (SPE); Flame atomic absorption spectrometry (AAS)
Categories
Ask authors/readers for more resources
A procedure for the determination of trace levels of Cd, Co, Cr, Fe, Mn, Ni, and Pb by flame atomic absorption spectrometry using a column preconcentration system is described in which the metals were adsorbed on pulverized banana peel, an economically and environmentally acceptable sorbent. In the optimization procedure, five variables (sample pH, mass of biosorbent, type of eluent, sample flow rate, and volume) were optimized and the capacity of the biosorbent was established. Under the optimized conditions, the detection limits of the method were 2.4, 27.0, 49.4, 31.1, 6.7, 29.6, and 46.2 mu gL(-1) for Cd, Co, Cr, Fe, Mn, Ni, and Pb, respectively. The precision, expressed as relative standard deviation, was less than 4% based on twelve measurements. The recoveries were 81.1% (Cd), 91.4% (Co), 87.2% (Cr), 90.1% (Fe), 88.0% (Mn), 94.1% (Ni), and 93.2% (Pb) under the optimum conditions (pH; 9, sample flow rate; 3mLmin(-1), mass of biosorbent; 200mg; eluent; 1mol L-1 nitric acid, preconcentration factor; 10). The sorption capacity of pulverized banana peel was 15.12, 28.85, 32.70, 30.44, 30.94, 28.97, and 8.21 mu mol per gram of adsorbent for Cd, Co, Cr, Fe, Mn, Ni, and Pb, respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available