公开(公告)号：EP2145174A1

公开(公告)日：2010-01-20

申请号：EP08745843.6

申请日：2008-04-15

申请人： General Electric Company

发明人： XAIO, Caibin ,  CHEN, Bingzhi ,  CUI, Weiyi ,  ZHANG, Li

IPC分类号： G01N21/27 ,  G01N21/80

CPC分类号： G01N21/80 ,  G01N21/274 ,  Y10T436/10

摘要： Systems and methods are described for measuring pH of low alkalinity samples. The present invention provides a sensor array comprising a plurality of pH indicators, each indicator having a different indicator concentration. A calibration function is generated by applying the sensor array to a sample solution having a known pH such that pH responses from each indicator are simultaneously recorded versus indicator concentration for each indicator. Once calibrated, the sensor array is applied to low alkalinity samples having unknown pH. Results from each pH indicator are then compared to the calibration function, and fitting functions are extrapolated to obtain the actual pH of the low alkalinity sample.

摘要翻译： 系统和方法被描述用于测量低碱度样品的pH值。 本发明提供了一种传感器阵列，其包括的pH指示剂复数，每个指示器具有不同的指示剂浓度。 通过将传感器阵列具有pH已知的搜索的确从每个指标的pH响应被同时记录与指示剂浓度为每个指标的试样溶液产生的校准功能。 一旦完成校准，传感器阵列被应用到具有未知的pH低碱度的样品。 从每个pH指示剂结果进行比较，以校准功能，并拟合函数外推，以获得低碱度样品的实际pH值。