CAJ | 학술논문

化学需氧量是评价水体受还原性物质污染程度的一项重要的综合指标,是监测环境的一个必要项目,同时也是为各种因素影响较大的项目之一。通过对环境标准样品的分析对比实验,对空白值、氯离子含量、反应温度和时间、冷却时间、试剂纯度、滴定终点判断等对化学需氧量测定的影响因素提出建议及控制。
화학수양량시평개수체수환원성물질오염정도적일항중요적종합지표,시감측배경적일개필요항목,동시야시위각충인소영향교대적항목지일。통과대배경표준양품적분석대비실험,대공백치、록리자함량、반응온도화시간、냉각시간、시제순도、적정종점판단등대화학수양량측정적영향인소제출건의급공제。
Chemical oxygen demand(COD) is an important composite indicator of evaluation of water pollution levels by reducing substances,is a necessary project for monitoring the environment,and is also one of the larger projects for a variety of factors.We put forward the recommendations and the influencing factors of COD,from comparative experiments on the analysis of the standard samples,blank value,a chlorine ion content,and the reaction temperature and time,cooling time,and the purity of the reagent,the titration end point judgment,etc.