中卫市黄河水质CODMn测定分析及解决方法

针对SERES2000 CODMn(高锰酸盐指数)仪器测试值出现随时间的推移,测量数值逐步下降,最终变为零的异常现象,对这种有一定规律的异常情况进行理论分析,在研究分析过程中始终坚持实验分析和理论指导相结合,将试验现象与推理判断相统一。通过一段时间的认真分析实验及多方探讨,最终找出了出现异常测量值的原因,并提出出现异常数据时新的解决方法和预防异常测量值出现的措施。     

退伍不退色 走红土地 创煤业辉煌之路——记广西右江矿务局党委书记、局长叶仿拥

右江矿务局坐落在广西百色市这块红土地上，这里到处蕴藏着丰富的煤炭资源，几十年来，建设者们在这里掘井建矿，将沉睡在地下的乌金源源不断地开采出来支援国家建设。然而，鲜为人知的是，一位退伍不退色，二十年如一日创煤业辉煌的领头人，现任右江矿务局党委书记、局长——叶仿拥。在这一块红土地上默默奉献青春，创出了一条辉煌之路。     

Decolorization of Blue CL-BR dye by AOPs using bleach wastewater as source of H2O2

This research was focused on the investigation of the efficacy of advanced oxidation processes (Fenton,ozonation and UV/H_2O_2) for decolorization of reactive azo dye (Blue CL-BR) using bleach wastewater as possible source of H_2O_2.All the experiments were performed on the laboratory scale set-up.The results showed that colour removal efficiencies by UV or bleach (H_2O_2) alone were not so efficient.Fenton process with bleach wastewater was found to be the most effective at process conditions such as pH of 3 and H_2O_2/Fe~(2 ) ratio of 24:1,resulting in 64% colour removal.Almost complete colour removal,i.e.,99% and 95% were achieved by UV/H_2O_2 and UVfoleach wastewater in 30 and 60 min,respectively.Ozonation proved an efficient method for decolorization of Blue CL-BR dye at alkaline pH.It was possible to achieve 98% colour removal with 30 min of ozonation at pH 9.The colour removal of dye was found to follow first order kinetics.     

硫脲紫外退色分光光度法测水中余氯

氯氧化硫脲使硫脲退色.一定条件下,硫脲紫外吸收的降低与水中余氯浓度成正比.依据这一特性建立了硫脲紫外退色分光光度法测定水中余氯的新方法.在pH值为1～6介质中,选择237 nm作为测定波长,则氯浓度在0～8.0 mg/L范围服从比尔定律.检测限为O.015 mg/L,水中常见的离子不干扰测定.该法用于自来水、游泳池水等样品中余氯浓度的测定,快速简便,加标回收率在98%～103%之间.     

挥发酚测定中异常问题的处理

对挥发酚测定中出现的蒸馏液变黄、接收液带色、试剂变质等异常问题，提出了解决办法。同时还提出，对挥发酚污染严重的水样，不能采用氯仿直接稀释萃取液法测定，应采用取水样稀释后重做的方法。