基于苦杏仁酸与B(可生成稳定配位化合物,该配位化合物可进一步和孔雀绿形成三元缔合物,该缔合物难溶于水且不稳定,但易溶于苯、甲苯、二甲苯等有机溶剂,据此建立了溶剂浮选光度法测定硼的新方法。该法灵敏度高,ε=2.7×105mol.L-1.cm-1,大多数共存离子不影响测定。测10μg硼10次,RSD=1.9%;检出限为0.56μg/mL。实测了钢样和人发中硼,相对标准偏差为1.2%~4.7%,回收率在95.2%~100.1%之间。 Based on mandelic acid and B (stable coordination compounds can be formed, the coordination compound can further form ternary association with malachite green, which is insoluble in water and unstable, but soluble in benzene, toluene, Xylene and other organic solvents, thus establishing a new method for the determination of boron by solvent flotation spectrophotometry.The method has high sensitivity, ε = 2.7 × 105mol.L-1.cm-1, most of the coexistence of ions does not affect the determination. The detection limit was 0.56μg / mL. The relative standard deviations (RSDs) were between 1.2% and 4.7% and the recoveries were between 95.2% and 100.1%.