Membrane potential: inside and outside membrane measured ion activity and generate an electrical potential difference.
9
3 Principle
Reference electrode
Key: membrane electrode is a known as the sensitive element of membrane choice.
Sensitive components: single crystal, mixed crystal, liquid membrane, membrane function and biological membrane, etc.
2 Denifition
Electrolyte analyzer
using ion selective electrode (ISE) measuring instrument for the ion concentration in the body fluids.
Measuring indicators of the sample: K+，Na+，Cl-， Ca+，pH, etc.
电解质分 析 仪
Electrolyte analyzers
作者xxx
1 Electrolyte chemical analyzers
2
1 Electrolyte chemical analyzers
What is the electrochemical analysis?
Energized the electrochemical properties of the solution: the electrolyte solution, its potential, current and conductance and power electrochemical properties with the nature of the chemical composition and concentration. Electrochemical analysis: based on the electrochemical properties of solution of analysis method.
5
3 Principle
The basic principle
Electrolyte analyzer is based on the ion selective electrode and reference electrode potential measurement and developed.In an electrolyte, most salt ionization into ions, inserted in the electrolyte ion selective electrode (indicating electrode) as the positive pole of the battery, reference electrode as the cathode of batteries, form a galvanic cell.Such in the relevant between ion selective electrode and reference electrode electrode potential difference, namely the battery electromotive force.By measuring the battery electromotive force measured corresponding ion concentration.
CONTENTS
1 Electrolyte chemical analyzers
2 Denifition
5 Wet electrolyte analyzers
3 Principle
6 Dry electrolyte analyzers
4 Classification
7 Clinical significance
E=E0-R.T/F.lg[cl-]
10
3 Principle
Referenckinds of commonly used, one is the calomel electrode, the other is a Ag-AgCl electrode.
Ag-AgCl electrode: Agcl+e
Ag+cl-
the nernst equation
Electrochemical clinical analysis instrument is designed using electrochemical analysis technology and clinical analysis instrument.
Divided into: Blood gas analyzer Electrolyte analyzer
enzyme electrode
...
7
3 Principle
8
3 Principle
Ion selective electrode
Ion selective electrode is also called membrane electrode
Features: only the specific ion selective response in the solution.
6
3 Principle
Ion selective electrode
different material
solid ion exchange membrane electrode
liquid ion-exchange membrane electrode
gas sensitive electrode