Document Detail

Trace metal and total suspended solids concentrations in freshwater: the importance of small-scale temporal variation.
MedLine Citation:
PMID:  11354741     Owner:  NLM     Status:  MEDLINE    
The temporal variation in the concentrations of particulate trace metals (Cu, Pb and Zn) and total suspended solids (TSS) was examined in three rivers that drain into the Port Jackson estuary, Australia, using a nested, hierarchical sampling design. Sampling was conducted between March and June 1999, under low flow conditions. The sampling design incorporated four temporal scales (hours, days, weeks and months). It was considered that hours, days, weeks and months were representative of such time scales and could be analyzed as random, nested sources of variation in an analysis of variance (ANOVA). Significant variation was found at temporal scales ranging from hours, within the same day, to months. The amount and scales of variation differed between particulate trace metals and TSS concentrations and between rivers. In many cases, differences between small-scale were as important as differences between months. The results suggest that higher anthropogenic influences cause higher variability at small temporal scale. Results indicate the need for nested sampling designs to be incorporated into studies of temporal variation in order to unconfound small-scale temporal variation. The conclusions of this study are likely to be applicable to other water quality variables and pollutants.
V Hatje; K Rae; G F Birch
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental monitoring : JEM     Volume:  3     ISSN:  1464-0325     ISO Abbreviation:  J Environ Monit     Publication Date:  2001 Feb 
Date Detail:
Created Date:  2001-05-16     Completed Date:  2001-09-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100968688     Medline TA:  J Environ Monit     Country:  England    
Other Details:
Languages:  eng     Pagination:  251-6     Citation Subset:  IM    
Environmental Geology Group, School of Geosciences, University of Sydney, NSW 2006, Australia.
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MeSH Terms
Environmental Monitoring / methods
Metals, Heavy / analysis*,  chemistry
Particle Size
Specimen Handling
Time Factors
Trace Elements / analysis*,  chemistry
Water Pollutants / analysis*
Reg. No./Substance:
0/Metals, Heavy; 0/Trace Elements; 0/Water Pollutants

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