毛皮pH值测定的不确定度评估  

Evaluation of the Uncertainty for Determination of pH Value of Fur

作　　者：张海英[1] 李慧玲[1] 吴建中[1] 

机构地区：[1]嘉兴市产品质量监督检验所,嘉兴314000

出　　处：《价值工程》2015年第1期282-283,共2页Value Engineering

摘　　要：依据QB/T 1277《毛皮化学试验p H的测定》,对毛皮p H值测定过程的不确定度进行了分析和评估。结果表明,影响结果的最主要影响因素是缓冲溶液,其次分别为样品萃取液体积、测量的重复性和样品称量,p H计对结果影响最小。当毛皮p H测定结果为4.30时,扩展不确定度为0.10。According to QB/T 1277, the uncertainty for the determination of pH value of fur was evaluated. The results showed that： the main factor affecting on result was the uncertainty produced from buffer solution, followed by aqueous extraction volume, measuring repeatability and sample weighing, the pH meter with minimal affecting on the results. When the pH value of fur is 4.30, the expanded uncertainty is 0.10.

关 键 词：毛皮 不确定度 PH值 

分 类 号：O657.91[理学—分析化学]