Determination of nickel in serum of haemodialysed patients by means of electrothermal atomic absorption spectrometry with deuterium background correction

摘要: In this paper, an improved method for the determination of Ni in serum by means electrothermal atomic absorption spectrometry (ETAAS) with deuterium background correction is described. Analysis was performed after a 1 + dilution samples solution containing 1% v/v HNO3 and 0.25% Triton X-100. Aqueous standard solutions were used calibration. Sensitivity accuracy comparable to those reported procedures based on Zeeman-effect corrected ETAAS. The characteristic mass 14 pg average analytical recovery 101.5 ± 4.8%(n= 9). analysis Seronorm Trace Element Control Serum yielded value 3.21 0.17 µg l–1(n= 10) as compared recommended concentration 3.2 l–1. For Standard Reference Material Bovine SRM 8419 from National Institute Standards Technology, 0.46 0.05 4) determined agreement recent findings other researchers. Improved precision (5.8% within-day, 7.5% between-day) detection limit (0.15 l–1) comparison previously procedure ETAAS obtained. levels 25 haemodialysed patients ranged 0.7 4.0 l–1[mean deviation (SD): 2.4 0.9 l–1] eight women normal renal function 0.3 (mean SD: 0.5 0.2 l–1).