Instrumental neutron activation analysis (INAA) was applied to the rapid determination of aluminium in drinking water. Aluminium content was quantitatively determined by measuring the -ray photopeak at 1778 keV of the short-lived radionuclide28Al (half-life 2.25 min). The experimental procedure was aimed at reducing significantly all contributions to the background. The aluminium concentration in various sources of drinking water was found to range from 80 to 170 g·1–1, well within the recommended European Standard of 200 g·1–1. The limit of detection (LOD), when assaying a sample of 10 ml under the specified experimental conditions, is 100 ng of Al.
Authors:Zoltán Langmár, Balázs Langmár, Márta Király and Zoltán Mátrai
There is probably nobody in Hungary who does not know the name of József Béres; however, only a few will be aware what powerful commitment and perseverance lay behind his results. József Béres has acquired ever lasting merit in Hungarian trace element research and his fair and decent life that always radiated deep humanity is an example not only for those involved in scientifi c research or in the healing professions but also for those who “simply” would like to draw strength for the struggles of everyday life. The unwavering perseverance of the modestly dressed man who gained his knowledge by hard diligence as well as the honest desire to help those in need is a quality József Béres had; thus, his life is exemplary for all of us. When researching this brief essay, I relied primarily on biographical and other data associated with his research that had been generously provided by his family.
Authors:A. Grimanis, N. Kalogeropoulos, V. Kilikoglou and M. Vassilaki-Grimani
Neutron activation analysis (NAA) is a very sensitive and accurate multielement analytical method that is widely applied to the investigation of environmental and archaeological problems. The first part of this paper is a review of pollution studies of toxic trace elements in sediments, seawater and marine organisms of Saronikos Gulf, Greece by NAA. The second part of this paper is a review of provenance studies based on minor and trace element research in ancient ceramics, obsidian, flint, limestone, marble and lead by Instrumental NAA, performed at the NCSR Demokritos.
The complexities involved in dealing with the requirements of trace element research studies in the life sciences demand comprehensive planning of the investigations and use of a variety of techniques. It also requires a combination of biological insight and analytical awareness on the part of the investigators in order to obtain valid samples for analysis. Thus, the generation of meaningful conclusions from elemental composition studies on biological systems is a strictly multidisciplinary task, an approach that is vital for the overall success of the investigations. In addition, new initiatives are needed to produce multipurpose biological reference materials to cope with the growing demands of this multifaceted area of research. These aspects are discussed.
Rapavi, E., Stefanovits-Bányai, É., Szentmihályi, K. és mtsai:
Trace elements and antioxidant properties of Hungarian dried herbs. In: New Results in the TraceElementResearch. Ed.: Pais, I. Szent István University, Budapest, 2003, 210