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- W2054776503 abstract "A quartz tube atomizer with a tungsten coil (QTAW) is described for the determination of arsenic in a flow injection hydride generation system. The flow injection system includes a Nafion® membrane that continuously dries the gaseous species, allowing removal of 4.2 mg min−1 of water, corresponding to an efficiency of 92.7%. The application of this system to the determination of arsenic, using the optimized conditions, shows considerable stability with time, without loss of sensitivity, and it was possible to obtain a calibration curve with a wide range (up to 500 µg l−1), with R2= 0.9998, a limit of detection of 1.5 µg l−1 and an analytical frequency of 60 determinations per hour. The determination of arsenic in samples of mineral and sea-waters, sediment and biological materials, shows good accuracy and precision between the results obtained and the certified values for the recovery of arsenic, with RSD values less than 6%." @default.
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- W2054776503 date "2002-10-15" @default.
- W2054776503 modified "2023-10-03" @default.
- W2054776503 title "A quartz tube atomizer with tungsten coil: a new system for vapor atomization in atomic absorption spectrometry" @default.
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- W2054776503 doi "https://doi.org/10.1039/b207605e" @default.
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