+++Anal. Chem.

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Помогите, пожалуйста, с двумя статьями

New procedure for calibrating glass electrodes
M. F. G. F. C. Camoes, Arthur K. Covington
Anal. Chem., 1974, 46 (11), pp 1547–1551

DOI:

http://dx.doi.org/10.1021/ac60347a003

Direct determination of sodium and potassium in the presence of ammonium with glass electrodes
Harold. Jacobson
Anal. Chem., 1966, 38 (13), pp 1951–1954

DOI:

http://dx.doi.org/10.1021/ac50155a078

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