Abstract
Pb and Al in blood and hair of child were determined by transverse heated graphite furnace atomic absorption spectrometry with NH4H2PO4 and Mg(NO3)2 as a modifier, which enhanced the temperature of ashing, eliminated the matrix interference and memorial effect. The method is rapid, simple and accurate. The characteristic mass of the method was 2.3 x 10(-11) g and 2.2 x 10(-11) g for Pb and Al respectively. The relative standard deviation of Pb and Al was 3.0% and 11.4%, respectively, and the recovery was 96%-102%.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aluminum / analysis*
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Aluminum / blood
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Aluminum / standards
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Child
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Graphite
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Hair / chemistry*
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Humans
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Lead / analysis*
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Lead / blood
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Lead / standards
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Magnesium Compounds / chemistry
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Nitrates / chemistry
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Phosphates / chemistry
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Quaternary Ammonium Compounds / chemistry
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Reference Standards
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Reproducibility of Results
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Spectrophotometry, Atomic / methods*
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Temperature
Substances
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Magnesium Compounds
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Nitrates
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Phosphates
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Quaternary Ammonium Compounds
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ammonium phosphate
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Lead
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Graphite
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magnesium nitrate
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Aluminum