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有关氢化物原子吸收和氢化物原子荧光测定锑,近年报导较多,但需专门的特殊仪器和惰性气体,且干扰较多。本文主要采用作者在文献中所设计的双毛细管喷雾器,简便地将测定溶液和还原剂一起喷入雾化室,使其混合并产生锑氢化物,直接引入空气—乙炔焰中进行原子吸收测定。可应用于0.0001％以上锑的测定。特征浓度为0.01微克/毫克(1％吸收),精密度与准确度均能满足地质化探要求。 (一)试剂与仪器 硼氢化钾溶液(2％):称2克硼氢化钾溶于100毫升含1％氢氧化钾的水溶液中。
Hydride atomic absorption and hydride atomic fluorescence determination of antimony, reported in recent years more, but the need for special equipment and inert gas, and more interference. In this paper, we mainly use the double capillary sprayer designed by the author in the literature, simply injecting the measuring solution and the reducing agent into the atomization chamber, mixing them to produce antimony hydride and directly introducing the air-acetylene flame for atomic absorption measurement. It can be applied to the determination of antimony above 0.0001%. The characteristic concentration is 0.01 μg / mg (1% absorption). Both precision and accuracy meet the requirements of geochemical exploration. (A) reagents and equipment potassium borohydride solution (2%): 2 g of potassium borohydride was dissolved in 100 ml of 1% aqueous solution of potassium hydroxide.