【摘要】 采用巯基棉分离富集痕量铜，用3mol．L-1HCl作洗脱剂洗脱富集在巯基棉上的铜，结合离子选择电权法建立了水饮料中痕量铜的离子选择电极分析方法．该法简单、分析灵敏度高，选择性好，检出限量8．30×10－8mol·L－1铜。相对标准偏差为3．8％（n＝7；Cs＝7．2×10－7mol．L－1Cu2＋）．更多还原

【Abstract】 We use mercapton cotton to seperate the trace copper then take off thecopper from the mercapton cotton with the 3 mol’ L-1 HCl. So we have at last discovered anew way to measure the trace copper in water and beverape -ion selective dectrode analysis.This way is simple, high sensitive and selective. The liAnt is 8 .3 × 10- 8 mol· L- 1 copper.RSD(relative standard deviation)is 3. 8% (n = 7; Cs = 7 .2 × 10-7 mol· L-1 Cu2＋ ).更多还原