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Related Concept Videos

Development of Analytical Methods01:21

Development of Analytical Methods

An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
Qualitative Analysis01:10

Qualitative Analysis

Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
Quantitative Analysis01:12

Quantitative Analysis

Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, qualitative analysis is performed first to identify its components, which ensures that the correct substances are measured during the quantitative phase.
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the method...
Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...
Sample Preparation for Analysis: Advanced Techniques01:08

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...

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Applying Cheminformatics to Develop a Structure Searchable Database of Analytical Methods
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Green analytical chemistry--theory and practice.

Marek Tobiszewski1, Agata Mechlińska, Jacek Namieśnik

  • 1Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12 G., 80-233 Gdańsk, Poland. marektobiszewski@wp.pl

Chemical Society Reviews
|May 27, 2010
PubMed
Summary

Green analytical chemistry focuses on sustainable development and eco-friendly sample preparation. Key aspects include miniaturized devices and faster results using solventless or alternative solvent techniques.

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Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Sustainable Development

Background:

  • Green analytical chemistry aligns with sustainable development principles.
  • It emphasizes environmentally friendly approaches in chemical analysis.
  • The review traces the history and origins of green analytical chemistry.

Purpose of the Study:

  • To summarize the current status of green analytical chemistry.
  • To highlight environmentally friendly sample preparation techniques.
  • To discuss miniaturization and efficiency in analytical processes.

Main Methods:

  • Review of literature on green analytical chemistry principles.
  • Focus on solventless extraction methods.
  • Discussion of alternative solvents and assisted extraction techniques.

Main Results:

  • Identification of solventless extraction, alternative solvents, and assisted extractions as key green approaches.
  • Emphasis on miniaturization and reduced analysis time.
  • Green analytical chemistry contributes to sustainable development.

Conclusions:

  • Environmentally friendly sample preparation is central to green analytical chemistry.
  • Miniaturization and efficiency are crucial for sustainable analytical practices.
  • Adoption of green chemistry principles enhances the environmental compatibility of analytical methods.