精选优质文档-倾情为你奉上紫外分光光度法测定水质总氮的影响因素分析张正美（南京市江宁区环境监测站）摘要：通过实验数据比对，对实验用水、消解温度与时间、冷却时间等影响总氮测定的因素进行分析。实验结果表明,新鲜一次蒸馏水和新鲜去离子水可代替重蒸馏无氨水；在消解温度122，消解时间50min，冷却时间23h的条件下，测量结果最佳。关键词：碱性过硫酸钾氧化；总氮；紫外分光光度法；影响因素Analysis of the influence factors of the determination of total nitrogen in water and waste water by using UV spectrophotometryAbstract: In this paper, some factors that had great impact on the accuracy and precision of the determination of total nitrogen in water and waste water by usi
