Can I read Applicability of Photon Correlation Spectroscopy for Measurement of Concentration and Size Distribution of Colloids in Natural Waters on EtoBox?

Applicability of Photon Correlation Spectroscopy for Measurement of Concentration and Size Distribution of Colloids in Natural Waters by Anna Ledin; Stefan Karlsson; Anders Dükers; Bert Allard is a Chemistry article available to read on EtoBox.

What is Applicability of Photon Correlation Spectroscopy for Measurement of Concentration and Size Distribution of Colloids in Natural Waters about?

The suitability of photon correlation spectroscopy (PCS) for the determination of concentration and size distribution of colloidal matter was tested in a surface water and.in a deep groundwater. Well-defined colloids (sizes predominately in the range 50-500 nm) of a-FezO,, y-AI(O SiOz, kaolinite, illite and a humic acid in aqueous solutions were used as references for calibration of the PCS-instrument (signal vs. concentration). The intensity of the scattered light was dependent on the composition of the colloid. The concentration ranges, where a quantitative determination of the colloid could be achieved, were 0.03-2 mg/l, 0.1-2 mg/l, 0.1-7 mg/l, OS-10 mg/l, OS-50 mg/l and 0.5-75 mg/l for a-FezO,, y-Al(OH),, SiOz, kaolinite, illite and humic acid, respectively (in homogeneous systems). The colloidal populations in the surface waters (inlet and outlet of a lake) had a size distribution in the range 100-500 nm. The measured count rates were around 330 kcps and 30 kcps at the inlet and outlet, respectively, which correspond to totally 2.8 mg/l and 0.9 mg/l of colloidal matter according to gravimetric determinations (collected on clogged 0.015 pm filters). Comparisons of concentration

Who reads Applicability of Photon Correlation Spectroscopy for Measurement of Concentration and Size Distribution of Colloids in Natural Waters?

Author

Anna Ledin; Stefan Karlsson; Anders Dükers; Bert Allard

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0003-2670)

Published

1993

Language

EN

Field

Chemistry (Physical Sciences)