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Related Concept Videos

Gas Chromatography: Sample Injection Systems01:08

Gas Chromatography: Sample Injection Systems

In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...

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Related Experiment Video

Updated: Jun 21, 2026

A Simple Method for Automated Solid Phase Extraction of Water Samples for Immunological Analysis of Small Pollutants
07:26

A Simple Method for Automated Solid Phase Extraction of Water Samples for Immunological Analysis of Small Pollutants

Published on: January 1, 2016

A review on sequential injection methods for water analysis.

Raquel B R Mesquita1, António O S S Rangel

  • 1CBQF/Escola Superior de Biotecnologia, Universidade Católica Portuguesa, 4200-072 Porto, Portugal.

Analytica Chimica Acta
|July 21, 2009
PubMed
Summary
This summary is machine-generated.

Sequential injection analysis (SIA) offers a faster, automated, and cost-effective approach for water analysis, significantly reducing reagent consumption and sample volume compared to traditional methods.

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Characterization and Application of Passive Samplers for Monitoring of Pesticides in Water
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Characterization and Application of Passive Samplers for Monitoring of Pesticides in Water

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Characterization and Application of Passive Samplers for Monitoring of Pesticides in Water
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Characterization and Application of Passive Samplers for Monitoring of Pesticides in Water

Published on: August 3, 2016

Area of Science:

  • Analytical Chemistry
  • Environmental Science

Background:

  • Flow methodologies aim for fast, automatic, and cost-effective analysis.
  • Analytical methods face increasing demands for lower reagent/sample consumption and portability.
  • Water analysis requires specialized flow methodologies to meet new challenges.

Purpose of the Study:

  • To critically review the application of sequential injection analysis (SIA) in water analysis.
  • To highlight SIA's advantages over reference procedures for water quality testing.
  • To explore SIA's potential for analyte speciation and multiparametric determinations.

Main Methods:

  • Review of existing literature on sequential injection analysis for water analysis.
  • Comparison of SIA performance with traditional reference methods.
  • Analysis of SIA's suitability for various water quality parameters.

Main Results:

  • SIA enables faster and more efficient water analysis.
  • SIA significantly reduces reagent consumption and sample volume.
  • SIA is effective for routine determinations, analyte speciation, and multiparametric analysis in water.

Conclusions:

  • Sequential injection analysis is a highly suitable technique for modern water analysis.
  • SIA offers a practical and advantageous alternative to conventional methods.
  • Further development of SIA holds promise for advanced water quality monitoring.