Pyridine-functionalized Fe₃O₄ nanoparticles as a novel sorbent for the preconcentration of lead and cadmium ions in tree leaf as a bioindicator of urban traffic pollution.
We have developed a facile and highly sensitive sorbent for cadmium and lead ions. It is based on Fe₃O₄ nanoparticles functionalized with a derivative of picoline and was characterized by scanning electron microscopy, differential thermographic analysis, and elemental analysis. The material can be applied to the preconcentration of lead and cadmium ions. Factors such as the type, concentration and volume of eluent, the pH of the sample solution, the time for extraction, and the volume of the sample were studied. The effects of a variety of ions on preconcentration and recovery of these ions were also investigated. The ions were determined by FAAS, and the limits of detection are <0.8 and <0.061 μg L⁻¹ for lead and cadmium, respectively. Recoveries and precisions are >98.0 % and <1.3 %, respectively. The method was validated by analyzing several certified leaf reference materials.
Department of Civil and Enviromental Engineering, The University Of New South Wales, Sydney, NSW, 2052, Australia.
Omid
O
Sayar
Hamid Reza Lotfi Zadeh
HR
Zhad
Omid
O
Sadeghi
Vahid
V
Amani
Ezzatolla
E
Najafi
Najmeh
N
Tavassoli
D000393:Air Pollutants / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D053000:Analytic Sample Preparation Methods; D002104:Cadmium / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D028203:Cedrus / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D002614:Chelating Agents / Q000737:chemistry; D004784:Environmental Monitoring / Q000379:methods; D007202:Indicators and Reagents / Q000737:chemistry; D007854:Lead / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D057230:Limit of Detection; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009517:New South Wales; D028223:Pinus / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry* / Q000187:drug effects / Q000378:metabolism; D011725:Pyridines / Q000737:chemistry; D015203:Reproducibility of Results; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D014197:Trees / Q000737:chemistry* / Q000187:drug effects / Q000378:metabolism; D014504:Urban Health; D001335:Vehicle Emissions / Q000032:analysis* / Q000633:toxicity
D000393:Air Pollutants; D002614:Chelating Agents; D007202:Indicators and Reagents; D058185:Magnetite Nanoparticles; D011725:Pyridines; D012987:Soil; D012989:Soil Pollutants; D001335:Vehicle Emissions; D002104:Cadmium; D007854:Lead; C023666:pyridine