封闭回流消解/ICP-AES测量活性污泥金属元素  

Measurement of Metallic Elements of Activated Sludge with Sealed Digestion/ICP-AES

作　　者：卢升 龙向宇[2] 唐然[2] 周从直[2] 

机构地区：[1]73882部队 [2]后勤工程学院国防建筑规划与环境工程系

出　　处：《后勤工程学院学报》2015年第5期60-65,共6页Journal of Logistical Engineering University

基　　金：重庆市前沿与应用基础研究计划项目(CSTC 2014jcyj A20004)

摘　　要：为测量活性污泥中K，Ca，Mg，Fe，Al 5种金属元素的含量，以超声波分散污泥絮体为基础，提出了封闭回流消解/ICP？AES测量活性污泥金属元素的较优方法和程序。封闭回流消解过程中，先在1 mL超声波处理后的污泥样品中加入3.5 mL HNO3，于125℃消解35 min，然后加入0.5 mL H2O2，进一步消解10 min，保证ICP？AES测量污泥中K，Ca，Mg，Fe，Al含量时具有良好的准确度和精密度，其加标回收率为96.8%~104.6%，相对标准偏差≤4.3%。封闭回流消解/ICP？AES测量活性污泥金属元素具有操作简单、用酸量省、稳定性好、适用性强、结果准确可靠的优点。In order to simultaneously measure the contents of K, Ca, Mg, Fe and Al of activated sludge, the appropriate pro-cess of measuring metallic elements with sealed digestion/ICP-AES was put forward, based on ultrasonic fragmentizing sludge flocs. In the course of sealed digestion, 3.5 mL HNO3 was added to 1 mL sludge sample treated with ultrasonic, and digested at 125℃for 35 min;and then the 0.5 mL H2O2 was added, and further digested at 125℃for 10 min. The sealed digestion could ensure the favor-able precision and accuracy of ICP-AES measuring the contents of K, Ca, Mg, Fe and Al of activated sludge, of which the recovery rate of standard addition was between 96.8%and 104.6%, and the relative deviation was lower than 4.3%. The method of measuring metallic elements of activated sludge with sealed digestion/ICP-AES was of such characteristics as being easy to operate, agent-sav-ing, stable, applicable and accurate.

关 键 词：封闭回流消解 ICP—AES 活性污泥 金属元素 

分 类 号：X703[环境科学与工程—环境工程]