Daftar Isi: ESTIMATION OF MEASUREMENT UNCERTAINTY IN THE DETERMINATION OF Fe CONTENT IN POWDERED TONIC FOOD DRINK USING GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

Main Authors:	Budiman, Harry; Research Centre for Chemistry, Indonesian Institute of Sciences, Kawasan PUSPIPTEK Serpong, Banten 15314, Indonesia, Sri H, Fransiska; Research Centre for Chemistry, Indonesian Institute of Sciences, Kawasan PUSPIPTEK Serpong, Banten 15314, Indonesia, Krismastuti, Krismastuti; Research Centre for Chemistry, Indonesian Institute of Sciences, Kawasan PUSPIPTEK Serpong, Banten 15314, Indonesia, Nuryatini, Nuryatini; Research Centre for Chemistry, Indonesian Institute of Sciences, Kawasan PUSPIPTEK Serpong, Banten 15314, Indonesia
Format:	Article info application/pdf eJournal
Bahasa:	eng
Terbitan:	Universitas Gadjah Mada , 2010
Online Access:	http://pdm-mipa.ugm.ac.id/ojs/index.php/ijc/article/view/515 http://pdm-mipa.ugm.ac.id/ojs/index.php/ijc/article/view/515/533

Daftar Isi:

The evaluation of uncertainty measurement in the determination of Fe content in powdered tonic food drink using graphite furnace atomic absorption spectrometry was carried out. The specification of measurand, source of uncertainty, standard uncertainty, combined uncertainty and expanded uncertainty from this measurement were evaluated and accounted. The measurement result showed that the Fe content in powdered tonic food drink sample was 569.32 μg/5g, with the expanded uncertainty measurement ± 178.20 μg/5g (coverage factor, k = 2, at confidende level 95%). The calibration curve gave the major contribution to the uncertainty of the final results. Keywords: uncertainty, powdered tonic food drink, iron (Fe), graphite furnace AAS