What is a liquid membrane electrode?
An electrode in which the sensing membrane is made up of a hydrophobic ion-exchange neutral carrier (ionophore) dissolved in a viscous, water-insoluble solvent. The liquid membrane is physically supported by an inert porous matrix such as cellulose acetate.
How do liquid membrane electrodes work?
One example of a liquid-based ion-selective electrode is that for Ca2+, which uses a porous plastic membrane saturated with the cation exchanger di-(n-decyl) phosphate. As shown here, the membrane is placed at the end of a non-conducting cylindrical tube, and is in contact with two reservoirs.
How does an ISE work?
The ion-selective electrode works based on the principle of a galvanic cell. The transport of ions from an area of high concentration to low concentration, through the selective binding of ions with the specific sites of the membrane, creates a potential difference.
What is ISE in chemistry?
Ion-selective electrodes (ISEs) are electrochemical ion sensors that convert the activity of a target ion into an electrical potential as the measurable signal. From: TrAC Trends in Analytical Chemistry, 2016.
What is liquid membrane waterproofing?
A liquid waterproofing membrane is essential for protecting many building structures. These flexible membranes are hand or spray applied onto surfaces such as balconies, podium decks and green roofs. They are even used to line municipal water tanks to prevent leaks.
What are liquid membranes made of?
Liquid membranes generally consist of a thin film separating two phases, which may be aqueous solutions or gas mixtures. The material used for the liquid membrane should be immiscible with water and should have a low vapor pressure to guarantee long-term stability of the membrane.
What is ISE machine?
An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a transducer (or sensor) that converts the activity of a specific ion dissolved in a solution into an electrical potential.
Which of the following is used in potassium electrode in liquid membrane electrodes?
Valinomycin
Which of the following is used in potassium electrode in liquid membrane electrodes? Explanation: Valinomycin is used in potassium electrode in liquid membrane electrodes. It is a doughnut shaped electron rich pocket.
Where is liquid waterproofing membrane used?
LAM can be used for new projects or refurbishments, Liquid Waterproofing Membrane Systems can be used in all areas of roofing, planters, sunken areas, landscapes, pedestrian areas, car parks and structural waterproofing.
How do you use liquid waterproofing membranes?
Liquid waterproofing membrane is available in the form of liquid and is sprayed or applied by brush or roller to the concrete surface which forms a thick joint free membrane in contact with air.
What is supported liquid membrane?
A supported liquid membrane (SLM) is one of the three-phase liquid membrane systems in which the membrane phase (liquid) is held by capillary forces in the pores of microporous polymeric or inorganic film. The immobilized liquid is a membrane phase and a microporous film serves as a support for the membrane.