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样品经过碱熔氧化和蒸馏分离处理,用冰浴水吸收OsO_4,电感耦合等离子体质谱(ICP-MS)测定纳克量6种Os同位素.方法检出限为0.0018 μg/L～0.015μg/L,加标回收率为93.8%～109.7%.
The samples were separated by alkaline fusion and distillation, and the Os isotopes were determined by ICP-MS with OsO 4 and ice bath, respectively. The detection limits were 0.0018 μg / L to 0.015 μg / L The spiked recoveries ranged from 93.8% to 109.7%.