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Related Concept Videos

Development of Analytical Methods01:21

Development of Analytical Methods

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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...
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Data Validation01:15

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Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
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In chemistry, titrimetric methods are broadly classified into three types: volumetric, gravimetric, and coulometric. Volumetric titrations involve measuring the volume of a titrant of known concentration that is required to react completely with an analyte. In gravimetric titrations, the standard solution reacts with the analyte to form an insoluble precipitate, which is filtered, dried, and weighed. In coulometric titrations, current is applied to an electrochemical reaction until the reaction...
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Greenness evaluation metric for analytical methods and software.

Tong Xin1, Luyao Yu1, Wenying Zhang1

  • 1School of Chemical Engineering, Ocean and Life Sciences, Dalian University of Technology, Panjin, Liaoning, 124221, China.

Journal of Pharmaceutical Analysis
|August 4, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a Greenness Evaluation Metric for Analytical Methods (GEMAM) to assess analytical procedures. GEMAM offers a simple, flexible, and comprehensive way to evaluate the environmental impact of chemical analyses.

Keywords:
Analytical methodsGreen analytical chemistryGreenness evaluationMetric

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Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Green Chemistry

Background:

  • Green analytical chemistry (GAC) aims to reduce the environmental and health impacts of analytical methods.
  • Evaluating the 'greenness' of analytical assays requires considering multiple factors like reagents, energy, and waste.
  • Existing evaluation methods may lack comprehensiveness or ease of use.

Purpose of the Study:

  • To propose a novel metric for evaluating the greenness of analytical methods.
  • To develop a simple, flexible, and comprehensive tool for assessing analytical procedures.
  • To provide a standardized method for quantifying the environmental impact of chemical analyses.

Main Methods:

  • Development of the Greenness Evaluation Metric for Analytical Methods (GEMAM).
  • Criteria based on the 12 principles of GAC and 10 sample preparation factors.
  • Results presented on a 0-10 scale with a qualitative and quantitative pictogram output.

Main Results:

  • GEMAM provides a straightforward calculation process.
  • The metric is easy to interpret, offering both numerical and visual (pictogram) results.
  • The pictogram combines qualitative and quantitative data for a holistic assessment.

Conclusions:

  • GEMAM offers a practical and effective tool for assessing the greenness of analytical methods.
  • The metric facilitates the adoption of more environmentally benign analytical practices.
  • GEMAM aids researchers and practitioners in understanding and improving the sustainability of their assays.