Bottom sediment as a source of organic contaminants in Lake Mead, Nevada, USA

Chemosphere ◽  
2012 ◽  
Vol 88 (5) ◽  
pp. 605-611 ◽  
Author(s):  
David A. Alvarez ◽  
Michael R. Rosen ◽  
Stephanie D. Perkins ◽  
Walter L. Cranor ◽  
Vickie L. Schroeder ◽  
...  
Keyword(s):  
Bottom Sediment ◽  
Organic Contaminants ◽  
Lake Mead

Chlorinated Organic Contaminants on suspended Sediments in Lake St. Clair

1986 ◽  
Vol 21 (3) ◽  
pp. 380-389 ◽  
Author(s):  
Murray N. Charlton ◽  
Barry G. Oliver
Keyword(s):  
Bottom Sediment ◽  
Organic Contaminants ◽  
Lake Erie ◽  
Suspended Sediments ◽  
Sediment Traps ◽  
Transboundary Pollution ◽  
Suspended Material ◽  
Chlorinated Organic ◽  
Lateral Mixing ◽  
Thames River

Abstract Sediment traps were used to study the presence and fate of chlorinated organics on suspended material in Lake St. Clair. The bulk of the material caught by the traps was resuspended bottom sediment. The highest concentrations of organics were usually found in the center of the lake while the lowest concentrations were found in the southeast area near the Thames River outlet. Organic contaminants were distributed throughout the lake on suspended material. Some results suggest that lateral mixing of contaminants in the St. Clair River results in transboundary pollution. Evidence of sporadic loadings of PCB was found. Inter-contaminant ratios were fairly consistent throughout the St. Clair-Detroit system indicating eventual transport of industrial contaminants from the St. Clair River to Lake Erie.

ANALYSIS OF ACCUMULATION AND DISTRIBUTION OF LEAD IN THE SYSTEM WATER-BOTTOM SEDIMENTS IN THE BACH DANG ESTUARY (VIETNAM)

2017 ◽  
pp. 62-66
Author(s):  
Truong Van Tuan ◽  
Irina Vladimirovna Volkova
Keyword(s):  
Bottom Sediment ◽  
Bottom Sediments ◽  
Water Samples ◽  
Suspended Solids ◽  
Natural Habitat ◽  
Bottom Layer ◽  
Sediment Samples ◽  
Natural Breeding ◽  
System Water ◽  
Water Bottom

Research was held in the estuary of the river Bach Dang (Dongbay community, Rakhtay district, Hai Phong, Vietnam) in June, 2012 - May, 2013. Concentration of lead was studied in water, suspended solids and bottom sediment. Clam beach (natural breeding environment of Meretrix lyrata ) was inspected regularly, every month. Water samples were taken 6 times from the bottom layer 10 cm down the bottom, once per 3 hours in each of 12 investigated zones. Bottom sediment samples were taken at the depth 2 cm. The findings show that lead accumulates mainly in suspended solids (23.3 mg/kg) and in bottom sediment (14.31 mg/kg), in water it is in small quantities (0.003 mg/kg). Analysis of bottom sediment samples taken in different places showed that they have even leadcontent, lead is distributed uniformly, localization of contaminations is not found. The results obtained can be assumed as the basis for investigating lead accumulation and its excretion by clam Meretrix lyrata organisms in the natural habitat.

Distribution and effects of organic contaminants on optical surfaces - Modeling

1998 ◽  
Author(s):  
Robert Long, Jr. ◽  
Fred Rigby ◽  
Lawrence Grimes
Keyword(s):  
Organic Contaminants ◽  
Optical Surfaces

Lake Mead--clear and vital

2013 ◽  
Author(s):  
Stephen M. Wessells ◽  
Michael Rosen
Keyword(s):  
Lake Mead
Sign in / Sign up

Export Citation Format

Share Document