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Related Concept Videos

Testing Water Quality01:14

Testing Water Quality

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When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
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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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Effects of EDTA on End-Point Detection Methods01:18

Effects of EDTA on End-Point Detection Methods

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Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
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Published on: September 19, 2025

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Selenium Detection Technology in Water: A Review.

Dan Wu1, Weifang Bao2, Fumin Xiong2

  • 1Zhejiang Key Laboratory of Agri-Food Resources and High-Value Utilization, National-Local Joint Engineering Research Center of Intelligent Food Technology and Equipment, College of Biosystems and Food Science, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China.

Molecules (Basel, Switzerland)
|February 27, 2026
PubMed
Summary
This summary is machine-generated.

Detecting selenium in drinking water is crucial due to its narrow beneficial-to-toxic range. Consistent low-level selenium exposure can lead to long-term health issues, necessitating reliable detection methods.

Keywords:
detectionhealthlimitseleniumwater

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Toxicology

Background:

  • Selenium (Se) is an essential trace element with a narrow window between beneficial and toxic levels.
  • Se accumulation in the body, even from low drinking water concentrations exceeding limits, poses health risks.
  • Accurate selenium detection is vital for public health and environmental monitoring.

Purpose of the Study:

  • To review the distribution, pollution, and health impacts of selenium in water.
  • To outline regulatory limits for selenium in drinking water.
  • To present an overview of selenium detection techniques and their applications.

Main Methods:

  • Review of existing literature on selenium's environmental and health effects.
  • Analysis of various analytical techniques for selenium detection, including atomic spectrometry, ICP-MS, and voltammetry.
  • Discussion on the applicability and characteristics of different detection methods.

Main Results:

  • Selenium's dual biological effects necessitate careful monitoring.
  • Various analytical methods exist for selenium detection, each with unique strengths.
  • A combination of laboratory analysis and rapid screening is recommended for effective monitoring.

Conclusions:

  • Establishing safety monitoring mechanisms for environmental selenium is essential.
  • Laboratory-based instrumental analysis, supported by on-site screening, provides robust technical support.
  • Effective selenium detection is key to preventing health hazards associated with contaminated drinking water.