| Author/Editor | Cvetković, Julijana; Jaćimović, Radojko; Stafilov, Trajče; Arpadjan, Sonja; Karadjova, Irina | |
| Title | Determination of major and trace elements in wine by k0-instrumental neutron activation analysis | |
| Type | članek | |
| Source | Glas Hem Tehnol Maked | |
| Vol. and No. | Letnik 21, št. 2 | |
| Publication year | 2002 | |
| Volume | str. 187-92 | |
| Language | eng | |
| Abstract | In this work, a method for the determination of major and trace elements in different types of wine samples based on k0-instrumental neutron activation analysis (k0-INAA) is presented. Results for the content of major and trace elements in different wines from the Republic of Macedonia are presented. Some data were compared using atomic absorption spectrometry (AAS). Mineralized wine samples were irradiated in the carousel facility (CF) of the 250 kW TRIGA Mark II reactor of the Jožef Stefan Institute. The samples were irradiated with a thermal neutron flux of 1.1x10 12 cm-2 s-1 for 20 hours. The carousel facility was not rotated during the irradiations. For f (thermal to epithermal flux ratio) and a (parameter which measures the epithennal flux deviation from the ideal (1/E) distribution) determination the "Cd-ratio" method for multi monitor was used. Thin foils or low-concentration alloys were used to minimize self-shielding effects (foils: 125 micro m Zr and 50 micro m Zn; wires: A1 - 0.1% Au and Al - 1.0% Co). The following results were obtained in the CF: f = 27.5 and a= -0.015. The values f and a obtained in this way were used to calculate element concentrations. The activities of irradiated samples were measured on a HPGe detector (ORTEC, USA) with 40% in relative efficiency. The detector was connected to a CANBERRA S100 multichannel analyser. For the peak area evaluation, the HYPERMET-PC programme was used. For elemental concentrations and effective solid angle calculations a software package called KAYZERO/SOLCOI®, operated on an IBM-compatible PC, was applied. | |
| Descriptors | WINE NEUTRON ACTIVATION ANALYSIS TRACE ELEMENTS SPECTROPHOTOMETRY, ATOMIC ABSORPTION NUCLEAR REACTORS |