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  • Title: Determination of thallium in urine with Zeeman effect graphite furnace atomic absorption.
    Author: Paschal DC, Bailey GG.
    Journal: J Anal Toxicol; 1986; 10(6):252-4. PubMed ID: 3807326.
    Abstract:
    Thallium is determined in urine with a simple dilution as the only sample pretreatment. Zeeman effect background correction provides adequate accommodation for non-atomic absorption such that sufficient diluted urine can be introduced into the furnace to achieve a detection limit of 0.5 ng/mL. Precision and accuracy were evaluated with Environmental Protection Agency water samples and in vitro spiked urine pools; precision of 15% at the 6 ng/mL level was observed. Diluted urine was used in calibration, with only 4 to 5% difference in slope observed within run among randomly selected urine specimens.
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