scholarly journals Determination of environmental levels of /sup 239/ /sup 240/Pu, /sup 241/Am, /sup 137/Cs, and /sup 90/Sr in large volume sea water samples

1976 ◽  
Author(s):  
D. Sutton ◽  
G. Calderon ◽  
W. Rosa
Keyword(s):  
Large Volume ◽  
Water Samples ◽  
Sea Water

Development of an on-line solid phase extraction method based on new functionalized magnetic nanoparticles. Use in the determination of mercury in biological and sea-water samples

Talanta ◽  
2016 ◽  
Vol 153 ◽  
pp. 228-239 ◽  
Author(s):  
Elisa Vereda Alonso ◽  
M.M. López Guerrero ◽  
Pilar Colorado Cueto ◽  
José Barreno Benítez ◽  
José Manuel Cano Pavón ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Water Samples ◽  
Extraction Method ◽  
Sea Water ◽  
Solid Phase ◽  
Phase Extraction ◽  
Functionalized Magnetic Nanoparticles ◽  
On Line

Methods for Determination of Sum Parameters and Characterization of Organochlorine Compounds in Spent Bleach Liquors from Pulp Mills and Water, Sediment and Biological Samples from Receiving Waters

1988 ◽  
Vol 20 (2) ◽  
pp. 13-24 ◽  
Author(s):  
Kari Martinsen ◽  
Alfhild Kringstad ◽  
Georg E. Carlberg
Keyword(s):  
Water Samples ◽  
Sea Water ◽  
Gel Permeation Chromatography ◽  
Solvent Mixture ◽  
Pulp Mills ◽  
Adsorption Method ◽  
Extraction Solvent ◽  
Fish Samples ◽  
Organic Chlorine

Methods suitable for determination of extractable organic chlorine in water, sediment and fish have been optimized. Cyclohexane was found to be the best nonpolar extraction solvent. For sediment and fish samples a cyclohexane/isopropanol solvent mixture was used. The organic chlorine in the extracts was determined by neutron activation analysis. The precision of the methods varied between 1 and 11 percent over a large concentration interval. Two methods for determination of adsorbable organic halogen using carbon and XAD-4 as adsorbents were compared. The carbon adsorption method had a lower detection limit (3 µg/l) and gave higher concentrations for effluents,and fresh and brackish water samples. The XAD-4 method gave higher concentrations for sea water samples. Examples of treatment with sulphuric acid containing different amounts of water and the use of thin layer and gel permeation chromatography to separate and characterize extractable organic chlorine are shown.

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