�ϳɲ��о��˸���T �γ���֬���븻�����ʱ�׼��Ʒ�е��ɡ��������������ʵ���������������: pH = 2. 00 ��������Һ��Ϊ���ʡ��¶�Ϊ293 K������v≤1. 0 mL·min �� 1������h≥10. 0 cm��������������ʾ���95%����; ��293 K��ʹ��40 mL ��pH 2. 00 ���ᣭ 3%������Һ��̬ϴ�ѻ���1. 0 mL·min �� 1�����ٽ��ж�̬ϴ�ѣ�ϴ���ʾ���95%���ϡ���֬�Բ�����ɵ��������̷������������ѧģ�͡�ʵ�������µı�׼����ʵ�飬�����ʾ��� 95%���Ե��ʱ�׼��Ʒ�����˷����ⶨ����������� 7%��������ɵ���Ա�׼ƫ��ֱ��Dz�: 0. 852 0%��0. 325 0%; ��: 4. 20%�� 4. 89%; ��: 1. 24%��1. 79%��������ɵļ���޷ֱ�Ϊ3. 55 × 10 �� 6 μg·mL �� 1��6. 23 × 10 �� 7 μg· mL �� 1��1. 92 × 10 �� 5μg·mL �� 1���÷�����׼ȷ�Ⱥ;��ܶȽϸߡ�

The resin modified with EBT was synthesized and the optimum experiment parameter was identified�� The Pt��Rh and Ru in geological standard samples were separated and enriched by EBT forming resin�� When the pH ( HCl) in 2. 00��the temperature is 293 K�� The flow rates of sample solution is lower than or equal to 1. 0 mL /min�� Column is longer than 10. 0 cm�� The adsorption rates of Pt��Rh and Ru are greater than 95%�� When the temperature is 293 K��elution with pH 2. 00 hydrochloric acid �� 3% thiourea ( 40 mL) by batch method or elution with the velocity of fiow at 1. 0 mL per minute by dynamic method��the elution rates of Pt��Rh and Ru are greater than 95%�� The adsorption kinetics follow a pseudo-second �� order model for the adsorption of Pt��Rh and Ru by EBT forming resin�� In the standard recovery experiment��the recoveries of Pt��Rh and Ru are greater than 95%�� Being determined by oscillolarography��relative errors are less than 7%�� The relative standard deviations are 0. 852 0% and 0. 325 0% for Pt��4. 20 % and 4. 89 % for Rh��and 1. 24% and 1. 79% for Ru�� The detection limits: Pt: 3. 55 × 10 �� 6 μg·mL �� 1 ; Rh: 6. 23 × 10 �� 7 μg·mL �� 1 ; Ru: 1. 92 × 10 �� 5μg·mL �� 1 �� It is proved that this method is higher in accuracy and precision��