Determination of Aluminum in Urine by Graphite Furnace Atomic Absorption Spectrometry

[Objective] To establish a method for determination of aluminum in urine by graphite furnace atomic absorption spectrometry(GFAAS). [Methods] Samples were diluted with 0.10% TritonX-100 and 0.50% HNO. Concentrations of urinary aluminum were detected by GFAAS. [Results] The correlation coefficient was 0.999, the limit of detection was 1.02 μg/L, the recovery rate ranged from 91.8% to 104.9%, with the relative standard deviation of 3.9%-7.9%. The urine samples could be stored at 4℃ for at least 14 days. [Conclusion] The method is sensitive, convenient, and accurate, and thus can be used to determine aluminum in urine.