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Electrolyte and Nonelectrolyte Solutions02:21

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Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
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Elements have a set number of protons that determines their atomic number (Z). For example, all atoms with eight protons are oxygen; however, the number of neutrons can vary for atoms of the same element. The sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are called isotopes. Elements can have multiple isotopes, for example, carbon-12, carbon-13, and carbon-14.
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Colligative Properties of Electrolytes
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Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
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A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
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In humans, electrolytes play a vital role in various physiological processes. Balancing electrolyte levels is essential for normal body functions; their imbalance can be life-threatening. The major electrolytes include sodium, potassium, chloride, calcium, phosphate, and bicarbonate. They are primarily involved in physiological processes, such as nerve signal transmission, membrane trafficking, muscle contraction, buffering body fluids, and balancing water levels in the body.
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A simple and efficient method to recover isotopically enriched Ni-64 from electrolytic solutions.

M A Avila-Rodriguez1, E A Aguilar-Ortiz1, A R Jalilian2

  • 1Unidad Radiofarmacia-Ciclotrón, División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510 Cd. Mx., Mexico.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|December 25, 2018
PubMed
Summary

Recovering nickel-64 (⁶⁴Ni) for copper-64 (⁶⁴Cu) production is challenging due to salt buffers. This study presents a simple method to efficiently recover ⁶⁴Ni from reprocessing solutions.

Keywords:
Chelex-100Copper-64Nickel-64Recycling of enriched isotopes

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Area of Science:

  • Radiochemistry
  • Nuclear Chemistry
  • Materials Science

Background:

  • The primary method for producing copper-64 (⁶⁴Cu) involves proton irradiation of nickel-64 (⁶⁴Ni).
  • Electrodeposition of ⁶⁴Ni onto a substrate is crucial for this production method.
  • Difficulties in electrodeposition necessitate reprocessing of the electrolytic solution, complicated by the presence of salt buffers that hinder nickel recovery.

Purpose of the Study:

  • To develop a straightforward and effective technique for recovering nickel-64 (⁶⁴Ni) from reprocessing solutions.
  • To address the challenge of nickel recovery in the context of ⁶⁴Cu production.

Main Methods:

  • Investigated methods for separating nickel-64 from salt buffers in electrolytic solutions.
  • Focused on developing a simple and efficient recovery process.

Main Results:

  • A simple and efficient method for recovering nickel-64 was successfully developed.
  • The developed method facilitates the reprocessing of solutions when electrodeposition fails.

Conclusions:

  • The new recovery method simplifies the reprocessing of nickel-64 solutions.
  • This advancement supports the consistent production of copper-64 by enabling efficient nickel recovery.