ESTIMATION OF MEASUREMENT UNCERTAINTYIN THE DETERMINATIONOF Fe CONTENT IN POWDERED TONIC FOOD DRINK USING GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2009
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/28001/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=11064 |
Daftar Isi:
- ABSTRACT 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 measurementresult showed that the Fe content in powdered tonic food drink sample was 569.32pg/Sg, with the expandeduncertaintymeasurement:I: 178.20 pg/5g (coveragefactor, k = 2, at confidende level 95%). The calibration curve gave the major contribution to thfJ uncertainty of the final results.