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Separation and preconcentration of malathion and azamethiphos by Unloaded polyurethane foams
(
Qatar University
, 1994 , Article)
The feasibility of using unloaded polyether type polyurethahe foams for the extraction and separation of malathion and azamethiphos in batch and column operations has been examined. The effects of pH, ionic strength, shaking ...
Iodometric microdetermination of phosphorus in organic compounds by use of An amplification reaction
(
Qatar University
, 1994 , Article)
A high chemical amplification method is described for the iodometric microdetermination of phosphorus in organic compounds. This method depends on combustion by the oxygen flask, absorption of the combustion products in ...