Green Sample Preparation Techniques

Green Chemistry originated in the 1990s as a strategy for using chemists' knowledge and skills to improve chemical processes without endangering the environment or human health. Green analytical chemistry quickly emerged as a significant driver in laboratories and industry to promote sustainability through the development of analytical methods that meet analytical performance criteria. The fundamental principles of green analytical chemistry encourage reducing or even eliminating the use and generation of harmful solvents and reagents, minimizing samples, saving money, time, and energy, and emphasizing miniaturization and automation. As a result, the development of innovative technologically and methodologically greener approaches that overcome the main limitations of traditional methods has gained significant attention in recent years.

Sample preparation techniques have drawn the greatest attention in relation to the green analytical chemistry philosophy since they are often the most resource-intensive stage in terms of solvents, reagents, samples, and time consumption, resulting in hazardous laboratory waste. In fact, sample preparation is the main source of the overall adverse effect of analytical methods on the environment. Consequently, to achieve green analytical goals, the recent trends focus on miniaturized solid and liquid-based techniques, the development of solventless or solvent-minimized procedures and the use of less toxic solvents and reagents.

The aim of this Research Topic is to cover significant developments in green sample preparation techniques and its applications in the environmental, food, and biological fields. We welcome original research, mini-reviews, reviews and perspectives on themes including, but not limited to:

• Liquid-phase microextraction

• Solid-phase microextraction

• Supercritical fluid extraction

• Ultrasound-assisted extraction

• Pressurized liquid extraction

• Microwave-assisted extraction

• QuEChERS

Keywords: Green Analytical Chemistry, Green extraction, Microextraction techniques, Miniaturization, QuEChERS

Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.