Some comments on the determination of fluvial sediment concentrations in the laboratory

Lai F. S., . Some comments on the determination of fluvial sediment concentrations in the laboratory. pp. 13-19. ISSN 0126-6128

The separation of suspended sediment in natural waters in the laboratories is usually determined by using the filtration method or gravimetric analysis. The type offilter used however differs from one user to another the type being largely determined by the quality of data needed cost or the effective filtering area required. In this experiment four commonly used and recommended filters by various researchers and agencies in the country were tested. They are the Whatman 542 Whatman GFC Whatman cellulose nitrate and Millipore type HA. The experiment involved drying the filters in the oven at 105C for over 24 h and ashing in the muffle furnace at 550C for 2h a normal procedure in determining the mineral sediment weight by eliminating any organic matter present. After ashing the Whatman GFC registered the highest mean weight loss of 0.0712g which is 3.63 of the original weight followed by Whatman cellulose nitrate membrane and the Whatman 542 (0.0014g) and the Millipore Type HA (0.0004g).

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Abstract

The separation of suspended sediment in natural waters in the laboratories is usually determined by using the filtration method or gravimetric analysis. The type offilter used however differs from one user to another the type being largely determined by the quality of data needed cost or the effective filtering area required. In this experiment four commonly used and recommended filters by various researchers and agencies in the country were tested. They are the Whatman 542 Whatman GFC Whatman cellulose nitrate and Millipore type HA. The experiment involved drying the filters in the oven at 105C for over 24 h and ashing in the muffle furnace at 550C for 2h a normal procedure in determining the mineral sediment weight by eliminating any organic matter present. After ashing the Whatman GFC registered the highest mean weight loss of 0.0712g which is 3.63 of the original weight followed by Whatman cellulose nitrate membrane and the Whatman 542 (0.0014g) and the Millipore Type HA (0.0004g).

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Item Type:	Article
AGROVOC Term:	Sediment
AGROVOC Term:	Cellulose nitrate
AGROVOC Term:	Membranes
AGROVOC Term:	Experiments
AGROVOC Term:	Filters
AGROVOC Term:	Drying
AGROVOC Term:	Organic matter
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22745

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