S.P.L. Sørensen

S. P. L. Sørensen
S. P. L. Sørensen
Lahir9 January 1868
Havrebjerg, Denmark
Meninggal12 Februari 1939(1939-02-12) (umur 71)
Kopenhagen, Denmark
KebangsaanDenmark
Dikenal atasKonsep pH
Karier ilmiah
BidangKimia
InstitusiLaboratorium Carlsberg

Søren Peder Lauritz Sørensen (9 Januari 1868 – 12 Februari 1939) adalah seorang kimiawan asal Denmark. Ia dikenal sebagai penemu konsep pH atau derajat keasaman untuk menentukan asam atau basanya suatu unsur atau senyawa kimia.

Dari tahun 1901 hingga 1938 Sørensen menjadi Kepala Laboratorium Carlsberg, sebuah laboratorium terkenal di Kopenhagen.[1] Ketika bekerja di Laboratorium Carlsberg, S.P.L. Sørensen yang merupakan lulusan Universitas Kopenhagen ini mempelajari pengaruh konsentrasi ion pada protein.[2] Karena konsentrasi ion hidrogen sangat penting, Sørensen memperkenalkan skala pH (menggunakan notasi pH[3]) sebagai cara sederhana untuk mengekspresikannya pada tahun 1909.[4] Pertama kali S.P.L. Sørensen memperkenalkan skala notasi pH dengan menggunakan dua metode untuk mengukur keasaman.[5] Metode pertama didasarkan pada elektrode, sedangkan metode kedua melibatkan perbandingan warna sampel dan serangkaian indikator yang sudah dipilih sebelumnya.

Referensi

  1. ^ "Sørensen, Søren Peter Lauritz (1868-1939)". 100 Distinguished European Chemists. European Association for Chemical and Molecular Sciences. Diarsipkan dari versi asli tanggal 2012-04-25. Diakses tanggal 2011-10-14. 
  2. ^ "Søren Sørenson". Science History Institute. Diarsipkan dari versi asli tanggal 2018-03-22. Diakses tanggal 20 March 2018. 
  3. ^ Sørensen, S. P. L. (1909). "Enzymstudien. II: Mitteilung. Über die Messung und die Bedeutung der Wasserstoffionenkoncentration bei enzymatischen Prozessen". Biochemische Zeitschrift (dalam bahasa German). 21: 131–304. 
  4. ^ Alberty, Robert; Silbey, Robert (1996). Physical Chemistry (edisi ke-second). John Wiley & Sons, Inc. hlm. 244. ISBN 0-471-10428-0. 
  5. ^ Nielsen, Anita Kildebæk (2001). "S.P.L. Sørensen" (dalam bahasa Danish). Biokemisk forening. Diarsipkan dari versi asli tanggal 2008-12-01. Diakses tanggal 2007-01-09. 

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