Document Detail

Buffer standards for the physiological pH of the zwitterionic compound of 3-(N-morpholino)propanesulfonic acid (MOPS) from T = (278.15 to 328.15) K.
MedLine Citation:
PMID:  22247568     Owner:  NLM     Status:  Publisher    
This paper reports the pH values of five NaCl-free buffer solutions and eleven buffer compositions containing NaCl at I = 0.16 mol·kg(-1). Conventional pa(H) values are reported for sixteen buffer solutions with and without NaCl salt. The operational pH values have been calculated for five buffer solutions and are recommended as pH standards at T = (298.15 and 310.15) K after correcting the liquid junction potentials. For buffer solutions with the composition m(1) = 0.04 mol·kg(-1), m(2) = 0.08 mol·kg(-1), m(3) = 0.08 mol·kg(-1) at I = 0.16 mol·kg(-1), the pH at 310.15 K is 7.269, which is close to 7.407, the pH of blood serum. It is recommended as a pH standard for biological specimens.
Lakshmi N Roy; Rabindra N Roy; Kathleen A Allen; Casey J Mehrhoff; Isaac B Henson; Jessica M Stegner
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Publication Detail:
Journal Detail:
Title:  The Journal of chemical thermodynamics     Volume:  47     ISSN:  0021-9614     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-1-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9890558     Medline TA:  J Chem Thermodyn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  21-27     Citation Subset:  -    
Hoffman Department of Chemistry, Drury University, 900 N. Benton Ave., Springfield, MO 65802, USA.
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Grant Support
R15 GM066866-03//NIGMS NIH HHS; R15 GM066866-03S1//NIGMS NIH HHS

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