【摘要】 本文研究了8-羟基喹啉-5-磺酸与铊的荧光反应,在表页活性剂CTMAB存在下,大大提高了反应的灵敏度,在0～2.5μg/25ml范围内Tl(Ⅲ)量与△F值呈良好的线性关系,检出下限为6.64ng/ml,其相对标准偏差为2.34%.本法采用聚氨酯泡沫塑料吸附铊后与其它干扰离子分离,可用于地质试样中铊的测定.更多还原

【Abstract】 A spectrofluorometric determination of thallium with 8-hydroxyquinoline-5-sul phonic acid is proposed. The detection limit is 6. 64ng/ml. The linear range of the calibra tion curves is from 0 to 2. 5 fg/25 ml. The relative standard deviation is 2. 34%. This method can be used to determine thallium in geological samples with satisfactory results.更多还原