title: Method development for the determination of calcium, copper, magnesium, manganese, iron, potassium, phosphorus and zinc in different types of breads by microwave induced plasma-atomic emission spectrometry.
abstract: A novel method was developed for the determination of calcium, magnesium, potassium, iron, copper, zinc, and manganese and phosphorous in various kinds of breads samples sold in Turkey by microwave plasma-atomic emission spectrometry (MIP-AES). Breads were dried at 100 °C for one day, ground thoroughly and then digested using nitric acid/hydrogen per oxide (3:1). The analytes in certified reference wheat flour and maize flour samples were determined in the uncertainty limits of the certified values as well as the analytes added to the mixture of ground bread and acid mixture prior to digestion were recovered quantitatively (>90%). Therefore, all determinations were made by linear calibration technique using aqueous standards. The LOD values for Ca, Cu, Fe, K, Mg, Mn, P and Zn were 13.1, 0.28, 4.47, 118, 1.10, 0.41, 7550 and 3.00 ng mL(-1), respectively. No spectral interference was detected at the working wavelengths of the analytes.
authors.affiliation: Istanbul Technical University, Faculty of Arts and Sciences, Department of Chemistry, 34469 Maslak, Istanbul, Turkey.
authors.forename: Nil
authors.initials: N
authors.lastname: Ozbek
authors.affiliation: Istanbul Technical University, Faculty of Arts and Sciences, Department of Chemistry, 34469 Maslak, Istanbul, Turkey. Electronic address: akmans@itu.edu.tr.
authors.forename: Suleyman
authors.initials: S
authors.lastname: Akman
mesh_terms: D001939:Bread / Q000032:analysis*; D005504:Food Analysis / Q000379:methods*; D008670:Metals / Q000032:analysis*; D008872:Microwaves; D008903:Minerals / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014131:Trace Elements / Q000032:analysis*
chemical_list: D008670:Metals; D008903:Minerals; D014131:Trace Elements; D010758:Phosphorus
keywords: Bread; Elemental determination; Microwave induced plasma-atomic emission spectrometry