Determination of zinc in clay and pottery materials by instrumental neutron activation analysis

The problems of determination of zinc in clay, ceramics and soils via ⁶⁵Zn using INAA are discussed. The applicability of different approaches for solving the influence of ⁴⁶Sc and ¹⁵²Eu by gamma-spectrometry on the line of ⁶⁵Zn at 1115.5 keV are experimentally evaluated. The application of the correction program ANGES for the calculation of the net peak area is demonstrated. All discussed approaches are checked by analyses of 10 SRM"s: Ohio Red Clay, Lefkandi brick, IAEA-SRM-Soil-1, IAEA-SRM-Soil-5, IAEA-SRM-Soil-7, IAEA-SRM-SL-3, GBW-08303, GBW-07406, NIST-SRM-2709 and BCR-SRM-520.