柱子:Hamilton PRP-X100 anion exchange column (250×4.1 mm i.d.,10μm)
仪器:PerkinElmer NexIon 300D ICP/MS.DRC was optimizedto the following parameters: RPa: 0, RPq: 0.8, cell gas: 0.8mLmin-1,QRO:-6.5 V, CRO: -1.3 V, CPV: -16 V.
条件: Mobile phase was composed of 60 mmol L-1ammonium nitrate (pH: 7, adjusted by 20% ammonia) in 0.1% formaldehyde (v/v).A 20μL aliquot of the sample was applied to the column, and an isocratic elution ata flow rate of 1.5 mLmin-1 was used.