用荧光光度法研究了桑色素-Triton X-100—十二烷基硫酸钠—Be(Ⅱ)体系的测定条件及方法.在pH12.5的硼酸-氢氧化钠缓冲溶液中,铍含量在0～48ng·ml~(-1) 范围内呈良好的线性关系,其检出限为0.031ng·ml~(-1).方法具有灵敏度高,选择性好,可不经有机溶剂萃取,于水相中直接对铝合金、钢片及河水等样品中的痕量铍进行测定 The determination conditions and method of morin-Triton X-100-sodium dodecyl sulfate-Be (Ⅱ) system were studied by fluorescence spectrophotometry. The content of beryllium in boric acid-sodium hydroxide buffer solution ~ 48ng · ml ~ (-1), the detection limit was 0.031ng · ml ~ (-1) .The method has the advantages of high sensitivity and good selectivity, which can be extracted without organic solvent in aqueous phase Directly on the aluminum alloy, steel and river samples of trace beryllium determination