Download | - View accepted manuscript: Thin film hydride generation: determination of ultra-trace copper by flow injection in situ hydride trapping graphite furnace AAS (PDF, 831 KiB)
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DOI | Resolve DOI: https://doi.org/10.1039/C002360D |
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Author | Search for: Zheng, Chengbin1; Search for: Sturgeon, Ralph E.1; Search for: Hou, Xiandeng |
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Affiliation | - National Research Council of Canada. NRC Institute for National Measurement Standards
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Format | Text, Article |
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Abstract | A novel system which significantly enhances copper hydride generation efficiency was used for the determination of trace copper by coupling a flow injection system to a graphite furnace for in situ collection of the analyte and subsequent AAS detection. A single device integrated the functions of hydride generator and gas liquid separator. Solutions of the sample containing 0.0005% (m/v) phenanthroline and 1% formic acid were merged with tetrahydroborate reductant to yield a thin film wetting a reaction surface from which product vapor was efficiently liberated and transported to the heated furnace. Optimum operating conditions provided for a generation/transport/collection efficiency of 8–12%. Interferences from common transition and noble metals were effectively eliminated. A limit of detection of 100 pg ml−1 was obtained based on processing a 1 ml sample volume. A precision of better than 4% (RSD) at 1 ng ml−1 was typical. The methodology was successfully applied to the determination of Cu in several NRCC natural water and biological tissue Certified Reference Materials |
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Publication date | 2010-03-01 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 16335083 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | 4e8fc05b-d3d6-40e4-b4c7-69d3684dd5ee |
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Record created | 2010-11-15 |
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Record modified | 2020-04-17 |
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