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Related Concept Videos

Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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Electrogravimetric Analysis: Overview01:30

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Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
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Qualitative Analysis03:46

Qualitative Analysis

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For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
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Updated: Jun 27, 2025

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
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Analytical methods for quantitating sulfate in plasma and serum.

Prasidhee Vijayakumar1, Paul A Dawson1

  • 1Mater Research Institute, The University of Queensland, Woolloongabba QLD, Australia.

Essays in Biochemistry
|May 3, 2024
PubMed
Summary
This summary is machine-generated.

Maintaining adequate circulating sulfate levels is crucial for health. This review covers analytical methods for measuring serum and plasma sulfate, vital for clinical diagnostics and understanding sulfate

Keywords:
AssayBiochemical pathologyMethodSulfataemiaSulfate

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Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Clinical Diagnostics

Background:

  • Circulating sulfate is essential for skeletal, neurological, and reproductive health.
  • Low circulating sulfate levels (hyposulfatemia) have adverse physiological consequences.
  • Sulfate is not routinely measured clinically despite its importance.

Purpose of the Study:

  • To provide an overview of analytical methods for measuring serum and plasma sulfate.
  • To highlight the strengths and limitations of various sulfate measurement techniques.

Main Methods:

  • Review of established barium sulfate precipitation techniques.
  • Evaluation of ion chromatography for human sulfate analysis.
  • Discussion of liquid chromatography-tandem mass spectrometry applications.

Main Results:

  • Various methods exist for sulfate quantification in biological samples.
  • Ion chromatography and LC-MS/MS offer advanced capabilities for sulfate measurement.
  • Hyposulfatemia has been identified in specific human conditions using advanced techniques.

Conclusions:

  • Accurate measurement of serum and plasma sulfate is important for clinical assessment.
  • Understanding the analytical methods is key to reliable sulfate diagnostics.
  • Further research into sulfate's clinical role and measurement is warranted.