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The Government of Canada’s terminology and linguistic data bank.
PH ISOIONIQUE [1 record]
Record 1 - internal organization data 1989-12-28
Record 1, English
Record 1, Subject field(s)
- Biological Sciences
Record 1, Main entry term, English
- isoionic point
1, record 1, English, isoionic%20point
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- isoionic pH 2, record 1, English, isoionic%20pH
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Hydrogen-ion concentration expressed usually as the pH value at which the ionization of an amphoteric substance as an acid equals the ionization as a base and becomes identical which the isoelectric point in the absence of foreign inorganic ions. 1, record 1, English, - isoionic%20point
Record number: 1, Textual support number: 1 CONT
For any given protein the isoelectric pH will vary somewhat, depending on the ionic composition of the medium, since proteins can bind certain anions and/or cations. When a protein solution is thoroughly dialyzed against distilled H2O to remove all small ions other than -H[superscript+] and OH-, the pH of the resulting solution is known as the isoionic pH. The isoionic pH is a constant for any given protein. 3, record 1, English, - isoionic%20point
Record 1, French
Record 1, Domaine(s)
- Sciences biologiques
Record 1, Main entry term, French
- pH isoionique
1, record 1, French, pH%20isoionique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- point isoionique 2, record 1, French, point%20isoionique
correct, masculine noun
- point iso-ionique 2, record 1, French, point%20iso%2Dionique
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
pH pour lequel le nombre de protons dissociés des groupes donateurs est égal à celui des protons combinés aux groupes accepteurs (-COO- = -NH3[exposant+]). On ne l’observe que lorsque les protons sont les seuls ions mis en jeu, donc en solution aqueuse pure. 1, record 1, French, - pH%20isoionique
Record number: 1, Textual support number: 1 OBS
En général le terme de "point isoionique" désigne le pH auquel la charge nette est nulle lorsque la substance est dissoute dans l'eau pure et n’ a la possibilité de fixer que des protons. Mais le plus souvent il y a d’autres ions en solution, lesquels peuvent également être fixés par la substance, de sorte que la molécule peut encore être chargée au pH correspondant au point isoionique, et on utilise le terme de "point isoélectrique" pour désigner le pH auquel est nulle la charge d’une molécule ayant fixé des ions étrangers. 3, record 1, French, - pH%20isoionique
Record number: 1, Textual support number: 2 OBS
pHI est une abréviation de pH isoionique. 2, record 1, French, - pH%20isoionique
Record 1, Spanish
Record 1, Textual support, Spanish
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