重量法检测污水中悬浮物含量的不确定度评定  

Evaluation of the uncertainty of concentration of suspended solids in sewage samples by gravimetric method

作　　者：曹蕾[1] 秦孝敏[1] 张琼尹[1] 

机构地区：[1]深圳市水质检测中心,广东深圳518055

出　　处：《工业水处理》2014年第7期79-81,共3页Industrial Water Treatment

摘　　要：采用重量法对4个不同浓度的实际污水水样的悬浮物含量进行了检测,并根据检测结果进行了测量不确定度的评定。根据实验过程,建立了数学模型,对各个不确定度的来源进行了分析,并计算出各个不同浓度样品的不确定度分量、合成不确定度和扩展不确定度,找到了占支配地位的不确定度分量,从而使检测人员对该方法检测悬浮物含量进行不确定度评定的计算变得简单实用。Suspended solids of four sewage samples with different concentrations have been detected by gravimetric method,and the uncertainty of measurement value of each concentration has been evaluated,based on the detection results.A mathematical model is established according to the experimental procedure,and the sources of uncertainty are analyzed.The uncertainty division,synthesis uncertainty and extension uncertainty of the samples with different concentrations are calculated.The dominant uncertainty division has been found,so as to make the method for calculating the uncertainty evaluation become easier and more practical.

关 键 词：重量法 悬浮物 测量不确定度 

分 类 号：O655.1[理学—分析化学] O655.1[理学—化学]