CAJ | 학술논문

样品的前处理采用微波消解,后用自动电位滴定仪测定废水中化学需氧量(CODcr).通过"硫酸-重铬酸钾-硫酸铝钾-钼酸铵"体系消解液对水样消解,选择出微波最佳消解条件.通过微波消解和传统的回流消解进行对比实验,发现前者不但能将样品消解完全,而且比后者节省大量的时间,大大提高分析效率.自动电位滴定与手工滴定相比,能得到更好的检出限、精密度、准确度和回收率.
양품적전처리채용미파소해,후용자동전위적정의측정폐수중화학수양량(CODcr).통과"류산-중락산갑-류산려갑-목산안"체계소해액대수양소해,선택출미파최가소해조건.통과미파소해화전통적회류소해진행대비실험,발현전자불단능장양품소해완전,이차비후자절성대량적시간,대대제고분석효솔.자동전위적정여수공적정상비,능득도경호적검출한、정밀도、준학도화회수솔.
To detect CODcr in waste water with microwave digestion-AEP titrimeter. To digest water sample using H2SO4-K2Cr2O7-KAl(SO4)2-(NH4)6Mo7O24 first, the best digestion condition was get. Carried on the opposite experiment through the microwave resolution and the traditional backflow resolution, not only discovered the former to be able to be complete the sample resolution, saved the massive time compared to the latter, raised the analysis speed greatly. The automatic electrometric titration and the manual titrate compare, can obtain better picks out limits, the accuracy, the accuracy and the returns-ratio.