Electrochemical Analysis of Some Toxic Metals by Ion Selective Electrode (CAT#: STEM-ACT-0109-WXH)

Name: Electrochemical Analysis of Some Toxic Metals by Ion Selective Electrode
SKU: STEM-ACT-0109-WXH
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Introduction

Besides the fact that some heavy metal ions are essential to many organisms in small doses, high doses affect the ecosystem and human health, and in the case of very toxic metals even small doses can be hazardous to human health. Heavy metals, by definition, are metals with a density. Heavy metals are prevalent in municipal and industrial effluents; they modify the structure and productivity of ecosystems. Several analytical methods are in use to determine heavy metal levels in various matrices. Of those, potentiometric sensors have attracted substantial interest and are especially advantageous for field, in situ, and remote applications.

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Principle Applications Procedure Materials

Principle

An ideal ion-selective electrode (I.S.E.) consists of a thin membrane across which only the intended ion can be transported. The transport of ions from a high conc. to a low one through a selective binding with some sites within the membrane creates a potential difference.

Applications

• Used for the potentiometric determination of several anions (fluoride, chloride, bromide, iodide ion) and cations (sodium, potassium, calcium ion).
• Used for endpoint detection in potentiometric titration.
• In biochemistry, ion selective electrodes are used for the determination of enzymes and substances which interact with enzymes.