Determination of heavy metals by ICP-OES and F-AAS after preconcentration with 2,2′-bipyridyl and erythrosine

The applicability of 2,2′-bipyridyl and erythrosine co-precipitation method for the separation and preconcentration of some heavy metals, such as Cd, Co, Cu, Ni, Pb and Zn in actual samples for their determination by ICP-OES and F-AAS was studied. Experimental conditions influencing the recovery of...

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Veröffentlicht in:Journal of hazardous materials 2008-04, Vol.152 (3), p.1122-1129
Hauptverfasser: Feist, Barbara, Mikula, Barbara, Pytlakowska, Katarzyna, Puzio, Bozena, Buhl, Franciszek
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container_end_page 1129
container_issue 3
container_start_page 1122
container_title Journal of hazardous materials
container_volume 152
creator Feist, Barbara
Mikula, Barbara
Pytlakowska, Katarzyna
Puzio, Bozena
Buhl, Franciszek
description The applicability of 2,2′-bipyridyl and erythrosine co-precipitation method for the separation and preconcentration of some heavy metals, such as Cd, Co, Cu, Ni, Pb and Zn in actual samples for their determination by ICP-OES and F-AAS was studied. Experimental conditions influencing the recovery of the investigated metals, such as pH, molar ratio of 2,2′-bipyridyl to erythrosine, the effect of time on co-precipitation were optimized. The analytical characteristics of the method (e.g. limit of detection, sensitivity, linear range and preconcentration factor) were obtained. The limits of detection LOD (ng mL −1) of the ICP-OES (F-AAS) method were: Cd: 4.0 (7.75), Co: 3.1 (57.2), Cu: 18 (10.3), Ni 21.3 (32.8), Pb: 35.9 (29.2) and Zn: 10.2 (6.90). The recovery of all the elements tested was more than 93%. The influence of inorganic matrix was examined. The proposed method was applied to determination of Cd, Co, Cu, Ni, Pb and Zn in vegetables and certified reference material (NCS ZC85006 Tomato).
doi_str_mv 10.1016/j.jhazmat.2007.07.095
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Experimental conditions influencing the recovery of the investigated metals, such as pH, molar ratio of 2,2′-bipyridyl to erythrosine, the effect of time on co-precipitation were optimized. The analytical characteristics of the method (e.g. limit of detection, sensitivity, linear range and preconcentration factor) were obtained. The limits of detection LOD (ng mL −1) of the ICP-OES (F-AAS) method were: Cd: 4.0 (7.75), Co: 3.1 (57.2), Cu: 18 (10.3), Ni 21.3 (32.8), Pb: 35.9 (29.2) and Zn: 10.2 (6.90). The recovery of all the elements tested was more than 93%. The influence of inorganic matrix was examined. 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Experimental conditions influencing the recovery of the investigated metals, such as pH, molar ratio of 2,2′-bipyridyl to erythrosine, the effect of time on co-precipitation were optimized. The analytical characteristics of the method (e.g. limit of detection, sensitivity, linear range and preconcentration factor) were obtained. The limits of detection LOD (ng mL −1) of the ICP-OES (F-AAS) method were: Cd: 4.0 (7.75), Co: 3.1 (57.2), Cu: 18 (10.3), Ni 21.3 (32.8), Pb: 35.9 (29.2) and Zn: 10.2 (6.90). The recovery of all the elements tested was more than 93%. The influence of inorganic matrix was examined. 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subjects 2,2'-Dipyridyl - chemistry
2,2′-Bipyridyl
Applied sciences
Calibration
Chemical Precipitation
Co-precipitation
Erythrosine
Erythrosine - chemistry
Exact sciences and technology
F-AAS
Heavy metals
ICP-OES
Lycopersicon esculentum
Metals, Heavy - analysis
Plant materials
Pollution
Reference Standards
Reproducibility of Results
Sensitivity and Specificity
Spectrophotometry, Atomic - methods
title Determination of heavy metals by ICP-OES and F-AAS after preconcentration with 2,2′-bipyridyl and erythrosine
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