A sedimentation method for the determination of the effective particle size distribution of DDT dispersible powders | Zendy

Thomas W. D. E. | Zendy

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A sedimentation method for the determination of the effective particle size distribution of DDT dispersible powders

Author(s) -

Thomas W. D. E.

Publication year - 1956

Publication title -

journal of the science of food and agriculture

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.782

H-Index - 142

eISSN - 1097-0010

pISSN - 0022-5142

DOI - 10.1002/jsfa.2740070410

Subject(s) - sedimentation , settling , suspension (topology) , aqueous suspension , pipette , particle size , particle size distribution , materials science , range (aeronautics) , chromatography , particle (ecology) , mineralogy , aqueous solution , chemical engineering , chemistry , composite material , environmental science , sediment , mathematics , geology , environmental engineering , organic chemistry , paleontology , oceanography , homotopy , pure mathematics , engineering

A modified Andreasen sedimentation method is described for the analysis of the DDT and carrier constituents of DDT dispersible powders. As an illustration of the use of the method, a 1% (w/v) aqueous suspension of the powder is sampled with a pipette at four different times from the commencement of settling. Variation of concentration of dispersible powder in the suspension within the range 0.2–2.0% (w/v) is without effect on the results. The method is shown to be suitable for use at any temperature (±0.05°) within the range 10–30°.

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