CAJ | 학술논문

研究了电渗泵性能的改进以及双向电堆积系统各种参数对富集倍数的影响。提出一种电渗驱动与双向电堆积相结合的便携式电动流动分析系统，并采用石墨炉原子吸收法对矿泉水中铬(Ⅵ)和镉(Ⅱ)进行了同时富集和测定。检出限为9ng/L Cr(Ⅵ)和10ng/L Cd(Ⅱ)(n=11，3倍空白标准偏差)。加入相当于样品含量的Cr(Ⅵ)和Cd(Ⅱ)，回收率分别为(105～107)±2％和(104～106)±2％(n=3)。
연구료전삼빙성능적개진이급쌍향전퇴적계통각충삼수대부집배수적영향。제출일충전삼구동여쌍향전퇴적상결합적편휴식전동류동분석계통，병채용석묵로원자흡수법대광천수중락(Ⅵ)화력(Ⅱ)진행료동시부집화측정。검출한위9ng/L Cr(Ⅵ)화10ng/L Cd(Ⅱ)(n=11，3배공백표준편차)。가입상당우양품함량적Cr(Ⅵ)화Cd(Ⅱ)，회수솔분별위(105～107)±2％화(104～106)±2％(n=3)。
The improvement of the electroosmotic pump properties and the effects of the bi-directional electrostacking system on the pre-concentration factor were investigated.A portable electrokinetic flow analysis system with electroosmotic driving and bi-directional electrostacking unit was introduced.The improved system with graphite furnace atomic absorption spectrometry was employed to separate,pre-concentrate and determine Cr(Ⅵ) and Cd(Ⅱ)in mineral water.The detection limit of Cr(Ⅵ)and Cd(Ⅱ)was 9 ng/L and 10 ng/L(3б of blank,n=11),respectively.Their recoveries of 200ng/L Cr(Ⅵ) and 100ng/L Cd(Ⅱ) added to samples were(105～107)±2% and (104～106)±2%(n=3).