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Resultados 131-140 de 142
Determination of faecal coliforms in bivalves by multiple test tube method.
1983
Determination of linear alkylbenzenesulfonates by high-performance liquid chromatography
1983
Tsukioka, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Murakami, T.
An attempt was made to apply high-performance liquid chromatography (HPLC) to a high-accuracy determination of linear alkylbenzenesulfonates (LAS) contained in environmental samples highly contaminated with organic matters; LAS was converted into chlorides (LAS-Cl) or methyl esters (LAS-O-Me) before being subjected to HPLC. The present HPLC method employed Shimadzu PC8-10, Waters micro Bondapak C18, or Jascopack SC-01-125 as a separating column, 85-90% methanol as an eluent, and wavelengths 250 and 225 nm for the measurement of LAS-Cl and LAS-O-Me, respectively. An experiment on material recovery for river water, sediment, and living body samples has given a satisfactory result that recovery is over 90%, coefficient of variation is 2-3%, and detection limit is 0.05 micro g. Test analyses have proved the present HPLC method to give rise to few interfering peaks so as to be satisfactorily applicable on actual environmental samples.
Mostrar más [+] Menos [-]Determination of faecal streptococci in sea-water by the membrane filtration culture method.
1983
Interface of forest and agriculture in nonpoint pollution control
1983
Fowler, John M. | Heady, Earl O. (Earl Orel) | Christensen, Douglas A.
LAS in river sediments, algae and water plants
1983
Katsuno, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Tsukioka, T. | Kono, Y.
A review of the municipal pollution abatement programs in the Great Lakes Basin
1983
An assessment of agricultural nonpoint source pollution in selected high priority watersheds in Pennsylvania
1983
Schueller, John P.
Pollution, causes, effects and control
1983
Harrison, R. M. (Roy M)
Marine pollution and its control
1983
Bishop, Paul L.
Report. IMCO/FAO/UNESCO/WMO/WHO/IAEA/UN/UNEP Joint Group of Experts on the Scientific Aspects of Marine Pollution. Sess. 13.
1983
