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微量硒的测定通常采用3,3-二氨基联苯胺(DAB)分光光度法、氢化物-AAS,氢化物-ICP-AES。作者为了建立简单的浓缩装置和灵敏度高的分析方法,选用氢化物-液体捕集-ICP-AEC法进行了研究。试剂硒标准溶液(1000mg/L):将1.405g二氧化硒用水溶解定容至1L。 30%硼氢化钠溶液:取原子吸收分析用硼氢化钠300g及氢氧化钠5g,用水溶解至1L, 其它试剂全部用特级品试剂。仪器及测定条件氢化物发生装置:500ml平底双口烧瓶连
Determination of trace selenium usually 3,3-diaminobenzidine (DAB) spectrophotometry, hydride-AAS, hydride-ICP-AES. In order to establish a simple concentrating device and a high-sensitivity analytical method, the author studied the hydride-liquid capture-ICP-AEC method. Reagent selenium standard solution (1000mg / L): 1.405g of selenium dioxide dissolved in water to 1L. 30% sodium borohydride solution: take atomic absorption analysis sodium borohydride 300g and sodium hydroxide 5g, dissolved in water to 1L, all the other reagents with special grade reagents. Apparatus and measurement conditions Hydride generation device: 500ml flat-bottomed flask with two