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| Determination of barium in table salt by graphite furnace atomic absorption spectrometry |
| Received:March 21, 2020 Revised:March 21, 2020 |
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| DOI：doi:10.3969/j.issn.2095-1035.2020.06.014 |
| KeyWord:graphite furnace atomic absorption spectrometry; table salt; barium |
| Author | Institution |
| DAI Ruiping |
江西省食品检验检测研究院 |
| CHEN Shikun |
南昌大学公共卫生学院 |
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| Abstract: |
| A graphite furnace atomic absorption spectrometry (GF-AAS) method was developed for the determination of barium in table salt without any treatment on the graphite tube and sample desalinating, sensitivity and spectra of barium in salt were greatly improved by optimizing the graphite furnace heating program. Barium shows a good linear relationship in the range of 0.00－50.0 μg/L, correlation coefficient is better than 0.999, and the detection limit is 0.650 mg/kg (calculated based on a weighing sample of 0.200 g and a fixed volume of 50 mL). The spiked recovery range of barium in table salt samples is 81.3%－105.1%, and the relative standard deviation is within 8.9%. The method is stable, reliable and accurate, and it is suitable for the determination of barium in table salt. |
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