4 Sampling of Organic Trace Contaminants

SPARK ◽  
2018 ◽  
Author(s):  
Reinhard Niessner ◽  
Andreas Schäffer
Keyword(s):  
Trace Contaminants ◽  
Organic Trace

Removal of Organic Trace Contaminants Using a Biological Air Filter (BAF)

2000 ◽  
Author(s):  
F. Eckhard ◽  
A. J. Van Der Werf ◽  
R. Veneri ◽  
C. Lobascio ◽  
Ch. Lasseur
Keyword(s):  
Air Filter ◽  
Trace Contaminants ◽  
Organic Trace

The Freshwater Clam (Elliptio Complanata), A Practical Tool for Monitoring Water Quality

1978 ◽  
Vol 13 (1) ◽  
pp. 45-52 ◽  
Author(s):  
C.A. Curry
Keyword(s):  
Exposure Period ◽  
Short Exposure ◽  
Southern Ontario ◽  
Elliptio Complanata ◽  
Trace Contaminants ◽  
Freshwater Clams ◽  
Bio Monitoring ◽  
Practical Tool ◽  
Humber River ◽  
Organic Trace

Abstract Freshwater clams (Elliptio complanata) from Balsam Lake were placed in cages in the Humber and Moira Rivers in southern Ontario. Clams were exposed from 4 to 6 weeks and analyzed for organic trace contaminants (pesticides and PCB's). Humber River clams accumulated significant levels of PCB's (polychlori-nated biphenyls), EDDT (total l,l,l-trichloro-2,2-bis (p-chlorophenyl) ethane), dieldrin, alpha- and gamma- chlordane after 8 days. Only PCBs and Zddt were accumulated in Moira River clams. Caged clams proved practical for detecting organic trace contaminants in water after a short exposure period. The advantages of using clams over fish and water samples for bio-monitoring are discussed as well as the practical considerations to further enhance the usefulness of this organism.

A new regenerative method for adsorption and oxidation of organic trace contaminants from flue gases

Chemosphere ◽  
1996 ◽  
Vol 32 (9) ◽  
pp. 1763-1770 ◽  
Author(s):  
S. Leichsenring ◽  
D. Lenoir ◽  
H.G. May ◽  
K.-. Schramm ◽  
A. Kettrup
Keyword(s):  
Flue Gases ◽  
Trace Contaminants ◽  
Organic Trace

Variability of Toxic Trace Contaminants in Municipal Sewage Treatment Plants

1988 ◽  
Vol 20 (4-5) ◽  
pp. 275-284 ◽  
Author(s):  
Henryk Melcer ◽  
Hugh Monteith ◽  
Stephen G. Nutt
Keyword(s):  
Organic Contaminants ◽  
Polyaromatic Hydrocarbons ◽  
Sewage Treatment ◽  
Municipal Sewage ◽  
Secondary Effluent ◽  
Sewage Treatment Plants ◽  
Trace Contaminants ◽  
Trace Contaminant ◽  
Organic Trace ◽  
Raw Wastewater

The variability of toxic trace contaminants in influents and effluents at three full-scale municipal sewage treatment plants was measured by collecting grab samples of degritted raw wastewater and non-chlorinated secondary effluent at two hour intervals over eight consecutive days. The samples were analyzed for metals, conventional contaminants and a range of organic trace contaminants. The metals and volatile organic compounds were the dominant contaminants found in the influents. In the effluents, organic concentrations were close to detectable levels and polyaromatic hydrocarbons were almost never detected. Some influent metal and organic contaminants varied diurnally while others appeared to fluctuate randomly with periodic spike inputs. The variability of most effluent trace contaminant concentrations was considerably attenuated in comparison to influent concentrations.

Removal of trace contaminants using molecularly imprinted polymers

2006 ◽  
Vol 53 (11) ◽  
pp. 205-212 ◽  
Author(s):  
M. Le Noir ◽  
B. Guieysse ◽  
B. Mattiasson
Keyword(s):  
Activated Carbon ◽  
Molecularly Imprinted Polymers ◽  
The Other ◽  
Molecular Imprinted Polymers ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Trace Contaminants ◽  
High Concentrations ◽  
Trace Concentrations ◽  
Granulated Activated Carbon

This work was conducted to study the potential of molecularly imprinted polymers (MIPs) for the removal of oestradiol at trace concentrations (1 ppm–1 ppb). An MIP synthesised with 17β-oestradiol as template was compared to non-imprinted polymers (NIP) synthesised under the same conditions but without template, a commercial C18 extraction phase and granulated activated carbon. At 1 ppb oestradiol was recovered by 98±2% when using the MIP, compared to 90±1, 79±1, and 84±2% when using the NIP, a C18 phase, or granulated activated carbon, respectively. According to these levels, the MIP was capable of producing an effluent with a quality 5–10 times higher than the other materials. The same levels of oestradiol recovery were achieved with the MIP when supplying 17β-oestradiol at 0.1 ppm. Phenolic compounds added as interferences bound less to the MIP than to the NIP, confirming the selectivity of the MIP. Oestradiol biodegradation was also demonstrated at high concentrations (50 ppm), showing the pollutants can be safely destructed after being enriched by molecular extraction. This study demonstrates the potential of molecular imprinted polymers as a highly efficient specific adsorbent for the removal of trace contaminants.

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