A Unified Analytical Method Greenness Score (uAMGS) Quantifies How Microscopic Imaging Is Greener Than Conventional...

Area of Science:

• Analytical Chemistry
• Green Chemistry

Background:

• Green chemistry principles aim for safer, efficient, and environmentally friendly methods.
• The Analytical Method Greenness Score (AMGS) evaluates traditional liquid chromatography (LC) based on energy and solvent impact.
• Current AMGS is limited to traditional methods and not suitable for advanced techniques like miniaturization.

Purpose of the Study:

• Introduce the unified Analytical Method Greenness Score (uAMGS) to broaden the scope of greenness assessment.
• Clarify and expand the mathematics of AMGS, incorporating dimensional and uncertainty analysis.
• Enable application of the metric to a wider range of analytical techniques.

Main Methods:

• Developed the unified Analytical Method Greenness Score (uAMGS).
• Applied uAMGS to compare single-molecule microscopy (SMM) and high-performance liquid chromatography (HPLC) for equivalent data collection.
• Incorporated dimensional and uncertainty analysis into the uAMGS framework.

Main Results:

• The uAMGS was used to compare the greenness of SMM and HPLC.
• SMM was found to be significantly greener than HPLC.
• Reduced solvent consumption was the primary factor contributing to SMM's higher greenness score.

Conclusions:

• The uAMGS provides a robust framework for assessing the greenness of diverse analytical separation techniques.
• The metric is applicable to cutting-edge methods beyond traditional chromatography.
• uAMGS facilitates greenness assessment for chemists across academic and industrial settings.