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Proceedings of the National Academy of Sciences of the United States of America, Vol. 73, No. 7 (Jul., 1976), pp. 2211-2215 (5 pages) The variable fluorescence yield of photosystem II is dependent on ...

In this paper, we determine the effective purity of potassium iodate as a redox standard with a certified value linked to the international system of units (SI units). Concentration measurement of ...