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Giacomo Dugo - One of the best experts on this subject based on the ideXlab platform.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Loredana La Torre, Simona Lo Curto, Alessandro Visco, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000-2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 +/- 9.86 for cadmium, 97.34 +/- 2.72 for copper, 100.68 +/- 0.67 for lead and 83.35 +/- 1.72 for zinc. Theoretic detection limits were 1.2 ng g(-1) for Cd, 3.6 ng g(-1) for Cu, 5.9 ng g(-1) for Pb, and 14.3 ng g(-1) for Zn. Found concentrations range were 15.94-58.51 ng g(-1) for Cu, 32.64-156.48 ng g(-1) for Pb, and 157.00-385.22 ng g(-1) for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements typical of sample calcinations methods.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Anna Maria Visco, Loredana La Torre, Simona Lo Curto, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000−2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 ± 9.86 for cadmium, 97.34 ± 2.72 for copper, 100.68 ± 0.67 for lead and 83.35 ± 1.72 for zinc. Theoretic detection limits were 1.2 ng g-1 for Cd, 3.6 ng g-1 for Cu, 5.9 ng g-1 for Pb, and 14.3 ng g-1 for Zn. Found concentrations range were 15.94−58.51 ng g-1 for Cu, 32.64−156.48 ng g-1 for Pb, and 157.00−385.22 ng g-1 for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements ...
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determination of copper ii lead ii cadmium ii and zinc ii in virgin olive oils produced in sicily and apulia by derivative potentiometric stripping analysis
2002Co-Authors: Lara La Pera, E Mavrogeni, Daniele Giuffrida, Giacomo Dugo, Lo F CocoAbstract:The presence of Cu (II), Pb (II), Cd (II) and Zn (II) was evaluated by derivative potentiometric stripping analysis in 82 virgin olive oil samples produced in Sicily and Apulia in the Crop Years 1999-2000 and 2000-2001. The sample pretreatment involved extraction of heavy metals from the oily matrix by hot concentrated hydrochloric acid. Lead (II), copper (II) and zinc (II) were found in all samples, with maximum values of 55.3 ng g -1 for Cu (II), 67.6 ng g -1 for Pb (II) and 610.1 ng g -1 for Zn (II), and minimum values of 8.2, 15.4 and 53.9 ng g -1 , respectively. Cadmium (II) was found only in two samples from Apulia, with a maximum value of 2.1 ng g -1 . In order to investigate the relationship between heavy metal concentration and olive oil production techniques, the results were correlated with olive picking method (manual or mechanical), and harvesting and milling dates (different Crop Years). Sicilian olive oils produced in 1999/00 had a higher mean content of Pb (II) and Cu (II) than samples from 2000/01. Amounts of Pb (II) and Cu (II) in Apulian olive oils were similar to those found in Sicilian oils in the same Crop Year. Metal concentration was related to olive oil production techniques: Sicilian oils produced in the two Crop Years from olives harvested mechanically had a Pb (II) content higher than oils produced from olives picked manually.
Lara La Pera - One of the best experts on this subject based on the ideXlab platform.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Loredana La Torre, Simona Lo Curto, Alessandro Visco, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000-2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 +/- 9.86 for cadmium, 97.34 +/- 2.72 for copper, 100.68 +/- 0.67 for lead and 83.35 +/- 1.72 for zinc. Theoretic detection limits were 1.2 ng g(-1) for Cd, 3.6 ng g(-1) for Cu, 5.9 ng g(-1) for Pb, and 14.3 ng g(-1) for Zn. Found concentrations range were 15.94-58.51 ng g(-1) for Cu, 32.64-156.48 ng g(-1) for Pb, and 157.00-385.22 ng g(-1) for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements typical of sample calcinations methods.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Anna Maria Visco, Loredana La Torre, Simona Lo Curto, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000−2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 ± 9.86 for cadmium, 97.34 ± 2.72 for copper, 100.68 ± 0.67 for lead and 83.35 ± 1.72 for zinc. Theoretic detection limits were 1.2 ng g-1 for Cd, 3.6 ng g-1 for Cu, 5.9 ng g-1 for Pb, and 14.3 ng g-1 for Zn. Found concentrations range were 15.94−58.51 ng g-1 for Cu, 32.64−156.48 ng g-1 for Pb, and 157.00−385.22 ng g-1 for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements ...
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determination of copper ii lead ii cadmium ii and zinc ii in virgin olive oils produced in sicily and apulia by derivative potentiometric stripping analysis
2002Co-Authors: Lara La Pera, E Mavrogeni, Daniele Giuffrida, Giacomo Dugo, Lo F CocoAbstract:The presence of Cu (II), Pb (II), Cd (II) and Zn (II) was evaluated by derivative potentiometric stripping analysis in 82 virgin olive oil samples produced in Sicily and Apulia in the Crop Years 1999-2000 and 2000-2001. The sample pretreatment involved extraction of heavy metals from the oily matrix by hot concentrated hydrochloric acid. Lead (II), copper (II) and zinc (II) were found in all samples, with maximum values of 55.3 ng g -1 for Cu (II), 67.6 ng g -1 for Pb (II) and 610.1 ng g -1 for Zn (II), and minimum values of 8.2, 15.4 and 53.9 ng g -1 , respectively. Cadmium (II) was found only in two samples from Apulia, with a maximum value of 2.1 ng g -1 . In order to investigate the relationship between heavy metal concentration and olive oil production techniques, the results were correlated with olive picking method (manual or mechanical), and harvesting and milling dates (different Crop Years). Sicilian olive oils produced in 1999/00 had a higher mean content of Pb (II) and Cu (II) than samples from 2000/01. Amounts of Pb (II) and Cu (II) in Apulian olive oils were similar to those found in Sicilian oils in the same Crop Year. Metal concentration was related to olive oil production techniques: Sicilian oils produced in the two Crop Years from olives harvested mechanically had a Pb (II) content higher than oils produced from olives picked manually.
Loredana La Torre - One of the best experts on this subject based on the ideXlab platform.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Anna Maria Visco, Loredana La Torre, Simona Lo Curto, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000−2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 ± 9.86 for cadmium, 97.34 ± 2.72 for copper, 100.68 ± 0.67 for lead and 83.35 ± 1.72 for zinc. Theoretic detection limits were 1.2 ng g-1 for Cd, 3.6 ng g-1 for Cu, 5.9 ng g-1 for Pb, and 14.3 ng g-1 for Zn. Found concentrations range were 15.94−58.51 ng g-1 for Cu, 32.64−156.48 ng g-1 for Pb, and 157.00−385.22 ng g-1 for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements ...
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Loredana La Torre, Simona Lo Curto, Alessandro Visco, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000-2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 +/- 9.86 for cadmium, 97.34 +/- 2.72 for copper, 100.68 +/- 0.67 for lead and 83.35 +/- 1.72 for zinc. Theoretic detection limits were 1.2 ng g(-1) for Cd, 3.6 ng g(-1) for Cu, 5.9 ng g(-1) for Pb, and 14.3 ng g(-1) for Zn. Found concentrations range were 15.94-58.51 ng g(-1) for Cu, 32.64-156.48 ng g(-1) for Pb, and 157.00-385.22 ng g(-1) for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements typical of sample calcinations methods.
Simona Lo Curto - One of the best experts on this subject based on the ideXlab platform.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Anna Maria Visco, Loredana La Torre, Simona Lo Curto, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000−2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 ± 9.86 for cadmium, 97.34 ± 2.72 for copper, 100.68 ± 0.67 for lead and 83.35 ± 1.72 for zinc. Theoretic detection limits were 1.2 ng g-1 for Cd, 3.6 ng g-1 for Cu, 5.9 ng g-1 for Pb, and 14.3 ng g-1 for Zn. Found concentrations range were 15.94−58.51 ng g-1 for Cu, 32.64−156.48 ng g-1 for Pb, and 157.00−385.22 ng g-1 for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements ...
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Loredana La Torre, Simona Lo Curto, Alessandro Visco, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000-2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 +/- 9.86 for cadmium, 97.34 +/- 2.72 for copper, 100.68 +/- 0.67 for lead and 83.35 +/- 1.72 for zinc. Theoretic detection limits were 1.2 ng g(-1) for Cd, 3.6 ng g(-1) for Cu, 5.9 ng g(-1) for Pb, and 14.3 ng g(-1) for Zn. Found concentrations range were 15.94-58.51 ng g(-1) for Cu, 32.64-156.48 ng g(-1) for Pb, and 157.00-385.22 ng g(-1) for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements typical of sample calcinations methods.
Anna Maria Visco - One of the best experts on this subject based on the ideXlab platform.
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derivative potentiometric stripping analysis dpsa used for the determination of cadmium copper lead and zinc in sicilian olive oils
2002Co-Authors: Lara La Pera, Anna Maria Visco, Loredana La Torre, Simona Lo Curto, Giacomo DugoAbstract:Derivative potentiometric stripping analysis (dPSA) was utilized to evaluate the Cd(II), Cu(II), Pb(II), and Zn(II) content in olive oil samples produced in Sicily in the Crop Year 2000−2001. The repeatability of the method was attested at 86.36% for cadmium, at 94.94% for copper, at 99.00% for lead, and at 98.92% for zinc. Recovery tests were carried out, both on cleanup procedures and on extraction steps, on olive oil spiked at different levels; obtained recoveries were 84.52 ± 9.86 for cadmium, 97.34 ± 2.72 for copper, 100.68 ± 0.67 for lead and 83.35 ± 1.72 for zinc. Theoretic detection limits were 1.2 ng g-1 for Cd, 3.6 ng g-1 for Cu, 5.9 ng g-1 for Pb, and 14.3 ng g-1 for Zn. Found concentrations range were 15.94−58.51 ng g-1 for Cu, 32.64−156.48 ng g-1 for Pb, and 157.00−385.22 ng g-1 for Zn. Copper, lead, and zinc were found in all samples. The main advantage of this determination consists of a not too aggressive metals extraction procedure using hydrochloric acid, which avoids losses of elements ...