1) the quality of observation
PH值观测
2) apparent PHN
表观PH值
3) pH measurement
pH值测定
1.
From May to August in 2003, China Nation Accreditation Committee of Laboratory(CNAL) organized the proficiency testing program(CNAL/T0086) for the pH measurement of solution.
20 0 3年 5～ 8月期间 ,中国实验室国家认可委员会组织了CNAL/T0 0 86水溶液的pH值测定能力验证。
4) pH value determination
测量pH值
5) pH measurement
pH值测量
1.
Based on the principle of pH measurement, the effects of several factors on the pH measuring accuracy of high purity water in power plants were analyzed, including the static charge generated by high purity water on glass electrode, the liquid junction potential changing with solution and the temperature variation.
从pH值测量的原理着手,分析了高纯水pH值测量过程中产生的静电荷、液接电位随被测溶液的变化、温度变化等因素对电厂高纯水pH值测量准确度的影响,认为有些因素的影响很难完全消除。
6) pH value measurement
pH值测量
1.
The important significance of measuring pH value of pure water in power plants has been expounded, specific interference affecting pH value measurement of pure water being analysed, errors may be produced from temperature compensation and pH meter calibration being discussed, giving method for washing and renovating the electrode, suggesting the checking method for online pH meters.
论述了电厂纯水pH值测量的重要意义 ,并分析了纯水 pH值测量受到的特殊干扰 ,以及温度补偿、pH测量仪校正可能产生的误差 ,给出电极清洗、恢复的方法和在线pH测量仪的检验方法。
补充资料：pH值
分子式：
CAS号：
性质：H30+浓度的负对数称为pH值。即pH=-1g[H3O+]。如[H3O+]=1.0×10-7mol/dm3，pH=7.00。水溶液的pH的范围在0～14之间，pH为1～7呈酸性，pH为7～14呈碱性。pH=7呈中性。
CAS号：
性质：H30+浓度的负对数称为pH值。即pH=-1g[H3O+]。如[H3O+]=1.0×10-7mol/dm3，pH=7.00。水溶液的pH的范围在0～14之间，pH为1～7呈酸性，pH为7～14呈碱性。pH=7呈中性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条