| Popis: |
Mechanization of a simple laboratory test for foam generation capacity has resulted in a sensitive research tool and a valuable method for investigating biodegradation of surfactants. By standardizing energy input, temperature and other parameters, very acceptably reproducible foam generation capacity and foam decay measurements are obtained. The method is suitable for organic materials capable of producing foams in aqueous solutions at very low concentrations such as 0.2–30 mg/liter. It is particularly suitable for individual or mixed surfactants and detergent formulations but has broader scope. It is fully adaptable to River Dieaway and Shake Flask Culture biodegradation test procedures and probably to others. The working range of concentrations is substantially that of interest in studies of water pollution by surfactants, and extends well below that for which most physical and chemical methods are suited. The method is broader in application and in information gained than an analytical method alone can be. The two may but do not necessarily yield parallel results. Both examinations are desirable. |
Full text from SpringerLink