The determination of ph in estuarine waters .2. practical considerations
The determination of ph in estuarine waters .2. practical considerations
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河口水域pH值的测定 .2．
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
M. Whitfield
中科院分区：
文献类型：
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作者：
R. Butler;A. Covington;M. Whitfield
在实验室和现场的实验研究表明，使用池结合自由扩散液结最大限度地减少系统误差在河口沃茨的pH值测量，提高测量精度。采用流动池和采样通过注射器的程序进行了描述和代表性的现场结果。所描述的程序易于自动化，并适用于现场连续测量。使用流动池可在每个工作日开始和结束时通过电极校准获得± 0.01 pH的精密度和准确度结果。
Experimental studies in the laboratory and in the field indicate that the use of cells incorporating a free diffusion liquid junction minimises systematic errors in pH measurements in estuarine waters and enhances the measurement precision. A procedure employing a flow-cell and sampling via a syringe is described and representative field results are presented. The procedure described is readily automated and adapted for continuous measurement in the field. The use of the flow cell enables results with a precision and accuracy of ± 0.01 pH to be obtained on a routine basis with electrode calibration at the beginning and end of each working day.