Determination of metal traces in vegetable oils from Spain and Morocco by graphite chamber atomic absorption spectroscopy following microwave digestion

Authors

  • K. Bakkali Departamento de Química Física y Analítica. Facultad de Ciencias Experimentales. Jaén
  • E. Ballesteros Departamento de Química Física y Analítica. Escuela Politécnica Superior de Linares. Linares. Jaén
  • B. Souhail Departamento de Química, Facultad de Ciencias, Universidad de Abdelmalek Essaadi, Tetuán
  • N. Ramos Martos Departamento de Química Física y Analítica. Facultad de Ciencias Experimentales. Jaén

DOI:

https://doi.org/10.3989/gya.031909

Keywords:

Atomic absorption spectroscopy with electrothermal atomization, Metals, Microwave digestion, Vegetable oils

Abstract


A simple, rapid analytical method for determining traces of Cd, Cr, Cu, Mn and Pb in in various types of vegetable oils is proposed. Samples are digested in a microwave oven and then analyzed by atomic absorption spectroscopy with electrothermal atomization. The proposed method exhibits good linearity and sensitivity to the five metals, which it can determine with detection limits over the range 0.06-2.15 Ìg/kg. Its precision, as relative standard deviation, ranges from 2.6 to 4.2%. Its accuracy was assessed by using it to analyze a reference material consisting of Used Oil HU-1, which contains certified metal concentrations, and was found to be quite acceptable. The proposed method was applied to the determination of the five metals in virgin olive, olive, sunflower, maize and pomace olive oils from Spain and Morocco. Based on the results, the metal contents varied among oil types and, for olive oil, also with the country of origin; the oil samples from Morocco contained especially high levels of lead.

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References

Acar O. 2001. Determination of cadmium and lead in biological samples by Zeeman ETAAS using various chemical modifiers. Talanta 55, 613-622. doi:10.1016/S0039-9140(01)00468-4 PMid:18968407

Allen LB, Siitonen PH, Thompson HC Jr. 1998. Determination of copper, lead, and nickel in edible oils by plasma and furnace atomic absorption spectroscopies. J. Am. Oil Chem. Soc. 75, 477-481. doi:10.1007/s11746-998-0250-1

Anwar F, Kazi TG, Saleem R, Bhanger MI. 2004. Rapid determination of some trace metals in several oils and fats. Grasas y Aceites 55, 160-168. doi:10.3989/gya.2004.v55.i2.162

Arain MB, Kazi TG, Baig JA, Jamali MK, Afridi HI, Shah AQ, Jalbani N, Sarfraz RA. 2009. Determination of arsenic levels in lake water, sediment, and foodstuff from selected area of Sindh, Pakistan: Estimation of dayli dietary intake. Food Chem. Toxicol. 47, 242- 248. doi:10.1016/j.fct.2008.11.009 PMid:19041679

Benincasa C, Lewis J, Perri E, Sindona G, Tagarelli A. 2007. Determination of trace element in Italian virgin olive oils and their characterization according to geographical origin by statistical analysis. Anal. Chim. Acta 585, 366-370. doi:10.1016/j.aca.2006.12.040 PMid:17386687

Calapaj R, Chiricosta S, Saija G, Bruno E. 1988. Method for the determination of heavy metals in vegetable oils by graphite furnace atomic absorption spectrometry. Atom. Spectrosc. 9, 107-109.

COI, Consejo Oleícola Internacional. 2003. Trade standard applying to olive oils and olive-pomace oils. Resolution NO. RES-6/88-IV/03. COI/T. NC no.3, 25 Junio.

Cornard JP, Caudron A, Merlin JC. 2006. UV-visible and synchronous fluorescence spectroscopic investigations of the complexation of Al(III) with caffeic acid, in aqueous low acidic medium. Polyhedron 25, 2215- 2222. doi:10.1016/j.poly.2006.01.013

Currie LA. 1999. Nomenclature in evaluation of analytical methods including detection and quantification capabilities (IUPAC Recommendations 1995). Anal. Chim. Acta 391, 105-126. doi:10.1016/S0003-2670(99)00104-X

Cypriano JC, Costa Matos MA, Camargo Matos R. 2008. Ultrason-assisted treatment of palm oil samples for the determination of copper and lead by stripping chronopotentiometry. Microhem. J. 90, 26-30. doi:10.1016/j.microc.2008.03.001

Chailapakul O, Korsrisakul S, Siangproh W, Grudpan K. 2008. Fast and simultaneous detection of heavy metals using a simple and reliable microchipelectrochemistry route: An alternative approach to food analysis. Talanta 74, 683-689. doi:10.1016/j.talanta.2007.06.034 PMid:18371693

Chang YT, Jiang SJ. 2008. Determination of As, Cd, and Hg in emulsified vegetable oil by flow injection chemical vapour generation inductively coupled plasma mass spectrometry. J. Anal. At. Spectrom. 23, 140-144. doi:10.1039/b712390f

Chen SS, Chen CM, Cheng CC, Chou SS. 1999. Determination of copper in edible oils by direct graphite furnace atomic absorption spectrometry. J. Food Drug Anal. 7, 207-214.

De Leonardis A, Macciola V, Felice M. 2000. Copper and iron determination in edible vegetable oils by graphite furnace atomic absorption spectrometry after extraction with diluted nitric acid. Int. J. Food Sci. Technol. 35, 371-375. doi:10.1046/j.1365-2621.2000.00389.x

Dolan SP, Nortrup DA, Bolger PM, Capar SG. 2003. Analysis of dietary supplements for arsenic, cadmium, mercury and lead using inductively plasma mass spectrometry. J. Agric. Food Chem. 51, 1307- 1312. doi:10.1021/jf026055x PMid:12590474

Economic European Communities. 2006. Setting maximum levels for certain contaminants in foodstuffs, Off. J. Eur. Commum. L 364/5-L 364/24, Directive No 1881/2006, Brussels.

Garrido MD, Frías I, Díaz C, Hardisson A. 1994. Concentrations of metals in vegetable edible oils. Food Chem. 50, 237-243. doi:10.1016/0308-8146(94)90127-9

Juranovic Cindric I, Zeiner M, Steffan I. 2007. Trace elemental characterization of edible oils by ICP-MS and GFAAS. Microchem. J. 85, 136-139. doi:10.1016/j.microc.2006.04.011

Karadjova I, Zachariadis G, Boskou G, Stratis J. 1998. Electrothermal atomic absorption spectrometric determination of aluminium, cadmium, chromium, copper, iron, manganese, nickel and lead in olive oil. J. Anal. At. Spectrom. 13, 201-204. doi:10.1039/a707256b

Lendínez E, Lorenzo ML, Cabrera C, López MC. 2001. Chromium in basic foods of the Spanish diet: seafood, cereals, vegetables, olive oils and dairy products. Sci. Total Environ. 278, 183-189. doi:10.1016/S0048-9697(01)00647-7 PMid:11669266

Martí-Cid R, Llobet JM, Castell V, Domingo JL. 2008. Dietary intake of arsenic, cadmium, mercury, and lead by the population of Catalonia, Spain. Biol. Trace Elem. Res. 125, 120-132. doi:10.1007/s12011-008-8162-3 PMid:18535793

Martín-Polvillo M., Alvi T, Guinda A. 1994. Determination of trace elements in edible vetable oils by atomic absorption spectrophotometry. JOACS 71, 347-353. doi:10.1007/BF02540512

Matos Reyes MN, Campos RC. 2006. Determination of copper and nickel in vegetable oils by direct sampling graphite furnace atomic absorption spectrometry. Talanta 70, 929-932. doi:10.1016/j.talanta.2006.05.055 PMid:18970862

Pehlivan E, Arslan G, Gode F, Altun T, Özcan MM. 2008. Determination of some inorganic metals in edible vegetable oils by inductively coupled plasma atomic emission spectroscopy (ICP-AES). Grasas y Aceites 59, 239-244. doi:10.3989/gya.2008.v59.i3.514

Roca A, Cabrera C, Lorenzo ML, López MC. 2000. Levels of calcium, magnesium, manganese, zinc, selenium and chromium in olive oils produced in Andalusia. Grasas y Aceites 51, 393-399. doi:10.3989/gya.2000.v51.i6.455

Sahan Y, Basoglu F, Gücer S. 2007. ICP-MS analysis of a series of metals (namely: Mg, Cr, Co, Ni. Fe, Cu, Zn, Sn, Cd and Pb) in black and green olive samples from Bursa, Turkey. Food Chem. 105, 395-399. doi:10.1016/j.foodchem.2006.12.026

Tounsi N, Dupont L, Mohamadou A, Mohamadou A, Aplincourt M, Plantier-Royon R, Massicot F, Harakat D, Portella C. 2005.Thermodinamic and spectroscopic studies of copper (II) complexes with three bis(amide) ligands derived from l-tartaric acid. J. Inorg. Biochem. 99, 2423-2435. doi:10.1016/j.jinorgbio.2005.09.010 PMid:16271395

Yun J, Choi H. 2000. Micellar colorimetric determination of iron, cobalt, nickel and copper using 1-nitroso-2- naphtol. Talanta 52, 893-902. doi:10.1016/S0039-9140(00)00441-0 PMid:18968050

Zeiner M, Steffan I, Juranovic Cindric I. 2005. Determination of trace elements in olive oil by ICP-AES and ETA-AAS: A pilot study on the geographical characterization. Microchem. J. 81, 171-176. doi:10.1016/j.microc.2004.12.002

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Published

2009-12-30

How to Cite

1.
Bakkali K, Ballesteros E, Souhail B, Ramos Martos N. Determination of metal traces in vegetable oils from Spain and Morocco by graphite chamber atomic absorption spectroscopy following microwave digestion. grasasaceites [Internet]. 2009Dec.30 [cited 2022Dec.7];60(5):492-9. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/603

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