MAE of phenolic compounds was reported by LopezAvila et al., Llompart et al. Chee et al. and Egizabal et al. Acetone-hexane seems to be the preferred solvent for 16 phenolic compounds and dichloro-methane, acetone-petroleum ether (1:1) were reported to work well for extraction of nonylphenol. The only compounds found to degrade during MAE are 2,4-dinitrophenol and 4,6-dinitro-2-methyl-phenol. MAE recoveries for phenolic compounds are usually higher than the classical extraction method recoveries, and the method precision is significantly better for MAE (e.g. coefficient of variation of 3% for MAE as compared to 15% for Soxhlet and 20% for sonication).

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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