CAJ | 학술논문

首先，构建了基于聚苯乙烯-双硫腙纳米纤维的铅离子富集前处理装置，可以有效地降低铅的检出限并提高检测灵敏度和选择性。其次，研发了水质铅自动在线分析监测仪，以预镀汞膜的玻碳电极为工作电极，采用阳极溶出伏安法，对实验参数进行了优化，例如预镀汞膜的条件、缓冲液的种类和浓度、铅富集时间和电压等。在最优化条件下，铅的溶出峰面积与其浓度在0～2000μg/L 范围内呈现良好的线性关系，其回归方程为 y1＝-0.07843＋0.00269 x （相关系数为0.998，浓度范围为5～2000μg/L ），y2＝-0.0035＋0.00178 x （相关系数为0.998，浓度范围为5～100μg/L ），检出限为0.38μg/L。在此基础上，采用标准加入法对水样中铅的含量进行了测定，并与原子吸收法的测定结果进行了比较。结果显示，该水质铅自动在线监测仪具有快速、准确、简便、灵敏等优点。
수선，구건료기우취분을희-쌍류종납미섬유적연리자부집전처리장치，가이유효지강저연적검출한병제고검측령민도화선택성。기차，연발료수질연자동재선분석감측의，이예도홍막적파탄전겁위공작전겁，채용양겁용출복안법，대실험삼수진행료우화，례여예도홍막적조건、완충액적충류화농도、연부집시간화전압등。재최우화조건하，연적용출봉면적여기농도재0～2000μg/L 범위내정현량호적선성관계，기회귀방정위 y1＝-0.07843＋0.00269 x （상관계수위0.998，농도범위위5～2000μg/L ），y2＝-0.0035＋0.00178 x （상관계수위0.998，농도범위위5～100μg/L ），검출한위0.38μg/L。재차기출상，채용표준가입법대수양중연적함량진행료측정，병여원자흡수법적측정결과진행료비교。결과현시，해수질연자동재선감측의구유쾌속、준학、간편、령민등우점。
First ,the pre-treatment device based on polystyrene-dithizone nanofibers for lead enrich-ment was constructed ,which could reduce detection limit and improve sensitivity and selectivity effective-ly. Next ,with glassy carbon electrode pre-coated by mercury film as working electrode ,an automatic on-line analysis monitor of lead was developed by anodic stripping voltammetry ,and various experimental conditions were investigated ,i.e. ,the condition of pre-coated mercury film ,the kind and concentration of buffer solutions ,the enrichment time and voltage of lead etc.Under the optimized conditions ,the stripping peak area of lead showed a good linearity of wide range between 0-2000 μg/L. The linear regression equa-tion was y1 = -0.07843+0.00269x(R=0.998 ,with the wide range between 5-2000 μg/L) ,y2 = -0.0035+0.00178 x(R=0.998 ,with the wide range between 5-100 μg/L) ,LOD (limit of detection) = 0.38 μg/L (at a signal-to-noise ratio of 3). Then ,the water samples were determined by standard addition method.Comparing with atomic absorption spectrometry method ,this automatic on-line analysis monitor of lead was advantageous of fast ,accurate ,simple ,sensitive and cheap etc.