Water sub-critical

This technique seems to have been introduced in late 1998, and consists of extracting organic contaminants from the soil with a solvent, generally sub-critical water, and then passing the extract through a small disc of solid sorbent. The solid sorbents discussed to date include graphitised carbon black [123], styrene-divinyl benzene [124],Carbograph-4 [122] and polyisobutylene [193]. 

Schutta, B.D., Serrano, B., Cerro, R.L. and Abraham, M.A. 2002. Production of Chemicals from Cellulose and Biomass-Derived Compounds Through Catalytic Sub-Critical Water Oxidation in a Monolith Reactor. Biom. Bioen., 22, 365-375. 

Marin TW, Jonah CD, Bartels DM. (2003) Reaction of OH radicals with Hj in sub-critical water. Chem Phys Lett Z7 144-149. 

Chlorogenic acid Tannic acid Gallic acid Hesperiden Rutin Catechol Glucose Naphthalene Exp Xi = Experimental value in water 20 C Cal c X2= Calculated value in sub-critical water 120 C... 

Extrapolation of sub-critical water results from processing to analytical studies, and vice versa, should be done with caution since they can be experimental or equipment dependent... 

Cheng, L., Ye, X. P, He, R., Liu, S. Investigation of rapid conversion of switch grass in sub-critical water. Fuel Process Technol 2009, 90, 301-311. 

Pourali, O., Asghari, F. S., Yoshida, H. Sub-critical water treatment of rice bran to produce valuable materials. Food Chem 2009,115,1-7. 

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