Determination of urine iron with graphite tube atomic absorption spectrometry

Objective:Establish graphite furnace atomic absorption spectrometry urine test methods of iron.Methods: Directly poured the diluted urine sample into graphite furnace,join ascorbic acid as a matrix modifier,dry,grey,and determinated atoms with spectrometry after compared with the standard work curve.Results: There was good linear correlation at 0 μg/L to 500 μg/L and r=0.9949-0.9993.the detect limit is 20 μg/L,the sample RSD is 2.5%~21.9%,and the recovery rate is in the range of 93.2%~103.7%.Conclusion: Samples only needed simple dilution.The method was simple,fast,highly sensitive and reproducible with good linear correlation of work curve and good recovery rate.The application of it would get satisfactory results.