The Info List - S. P. L. Sørensen

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Søren Peder Lauritz Sørensen (9 January 1868 – 12 February 1939) was a Danish chemist, famous for the introduction of the concept of pH, a scale for measuring acidity and alkalinity. He was born in Havrebjerg, Denmark. From 1901 to 1938 he was head of the prestigious Carlsberg Laboratory, Copenhagen.[1] While working at the Carlsberg Laboratory
Carlsberg Laboratory
he studied the effect of ion concentration on proteins,[2] and because the concentration of hydrogen ions was particularly important, he introduced the pH-scale as a simple way of expressing it in 1909.[3] The article in which he introduced the scale (using the notation pH[4]), described two new methods for measuring acidity.[5] The first method was based on electrodes, while the second involved comparing the colors of samples and a preselected set of indicators. References[edit]

^ "Sørensen, Søren Peter Lauritz (1868-1939)". 100 Distinguished European Chemists. European Association for Chemical and Molecular Sciences. Archived from the original on 2012-04-25. Retrieved 2011-10-14.  ^ "Søren Sørenson". Science History Institute. Retrieved 20 March 2018.  ^ Alberty, Robert; Silbey, Robert (1996). Physical Chemistry
(second ed.). John Wiley & Sons, Inc. p. 244. ISBN 0-471-10428-0.  ^ Sørensen, S. P. L. (1909). "Enzymstudien. II: Mitteilung. Über die Messung und die Bedeutung der Wasserstoffionenkoncentration bei enzymatischen Prozessen". Biochemische Zeitschrift (in German). 21: 131–304.  ^ Nielsen, Anita Kildebæk (2001). "S.P.L. Sørensen" (in Danish). Biokemisk forening. Retrieved 2007-01-09. 

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WorldCat Identities VIAF: 38418568 LCCN: n86864471 GND: 127678484 SUDOC: 160774