scholarly journals Development of Alternative Green Sample Preparation Techniques

Separations ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 31
Author(s):  
Emanuela Gionfriddo
Keyword(s):  
Green Chemistry ◽  
Sample Preparation ◽  
Pollution Prevention ◽  
Environmentally Friendly ◽  
Chemical Processes ◽  
The Public ◽  
Laboratory Waste ◽  
Preparation Techniques ◽  
Green Sample

Although chemistry disciplines are often regarded by the public as polluting sciences, in the last three decades, the concept of “Green Chemistry” has fueled the development of more sustainable and environmentally friendly chemical processes that are mainly aimed at minimizing the production of toxic laboratory waste, to maximize pollution prevention [...]

Green chemistry in China

2011 ◽  
Vol 83 (7) ◽  
pp. 1379-1390 ◽  
Author(s):  
Zheng Cui ◽  
Evan S. Beach ◽  
Paul T. Anastas
Keyword(s):  
Green Chemistry ◽  
Rational Design ◽  
Environmentally Friendly ◽  
Research Field ◽  
Academic Community ◽  
Chemical Processes ◽  
Plastics Additives

The principles of green chemistry provide a framework for rational design of environmentally friendly chemicals and chemical processes having reduced intrinsic hazard. In China, the academic community has made advances in key areas, developing new catalysts, solvents, polymers, plastics additives, and biomass transformations that add to the “toolbox” of alternative, more benign, and transformative technologies. Educational and outreach activities have also flourished in recent years. This perspective highlights examples of green chemistry breakthroughs in China, focusing on literature reports from 2008 to 2010. While we cannot hope to be comprehensive, we aim to provide examples that demonstrate the scope of the current research field.

Evaluation of Green Sample Preparation Techniques for Organic Compounds

2018 ◽  
Vol 5 (3) ◽  
pp. 168-176 ◽  
Author(s):  
Magdalena Fabjanowicz ◽  
Kaja Kalinowska ◽  
Jacek Namieśnik ◽  
Justyna Płotka-Wasylka
Keyword(s):  
Sample Preparation ◽  
Organic Compounds ◽  
Preparation Techniques ◽  
Green Sample

The penetration of green sample-preparation techniques in comprehensive two-dimensional gas chromatography

2015 ◽  
Vol 71 ◽  
pp. 74-84 ◽  
Author(s):  
Peter Q. Tranchida ◽  
Mariarosa Maimone ◽  
Giorgia Purcaro ◽  
Paola Dugo ◽  
Luigi Mondello
Keyword(s):  
Gas Chromatography ◽  
Sample Preparation ◽  
Two Dimensional ◽  
Preparation Techniques ◽  
Green Sample

Early Industrial Roots of Green Chemistry

2021 ◽  
Vol 43 (1) ◽  
pp. 21-25
Author(s):  
Mark A. Murphy
Keyword(s):  
Green Chemistry ◽  
Environmental Protection ◽  
Real World ◽  
Environmental Protection Agency ◽  
Industrial Pollution ◽  
Pollution Prevention ◽  
Chemical Processes ◽  
Oil Refining ◽  
Protection Agency ◽  
The Us

Abstract Many literature articles, conventional histories, and narratives about the origins of “Green Chemistry” describe it as being a result of concepts and actions at the US Environmental Protection Agency (EPA) and/or research in Academia during the 1990s and later. But many examples of increasingly environmentally friendly real-world chemical processes were invented, developed, and commercialized in the oil refining, commodity chemical, and consumer product industries in many countries decades before the 1990s. The earliest efforts evolved and accelerated into many environmentally-oriented and commercialized industrial examples of “Pollution Prevention” during the 1970s and 1980s. The “Green Chemistry” terminology and “Principles” adopted by the EPA and Academia in the 1990s evolved from and re-named the mostly industrial “Pollution Prevention” approaches and inventions.

A Freeze Shadow Technique for the Preparation of Soft Paint Latexes for Electron Microscopy

1977 ◽  
Vol 35 ◽  
pp. 314-315
Author(s):  
Earl R. Walter ◽  
Glen H. Bryant
Keyword(s):  
Sample Preparation ◽  
High Vacuum ◽  
Vacuum System ◽  
Latex Particles ◽  
New Methods ◽  
Diffusion Pump ◽  
Film Forming ◽  
Routine Basis ◽  
Distribution Studies ◽  
Preparation Techniques

With the development of soft, film forming latexes for use in paints and other coatings applications, it became desirable to develop new methods of sample preparation for latex particle size distribution studies with the electron microscope. Conventional latex sample preparation techniques were inadequate due to the pronounced tendency of these new soft latex particles to distort, flatten and fuse on the substrate when they dried. In order to avoid these complications and obtain electron micrographs of undistorted latex particles of soft resins, a freeze-dry, cold shadowing technique was developed. The method has now been used in our laboratory on a routine basis for several years.The cold shadowing is done in a specially constructed vacuum system, having a conventional mechanical fore pump and oil diffusion pump supplying vacuum. The system incorporates bellows type high vacuum valves to permit a prepump cycle and opening of the shadowing chamber without shutting down the oil diffusion pump. A baffeled sorption trap isolates the shadowing chamber from the pumps.

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