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Результаты 121-130 из 140
Indoor air pollution
1983
Wadden, Richard A. | Scheff, Peter A.
Effects of fluorine pollution on the distribution of mineral elements in the leaves and swollen roots of radish, Raphanus sativus L
1983
Charlot, C. | Kisman, S. (Faculte de Pharmacie, 34060 Montpellier Cedex (France))
Blood lead levels of dutch city children and their relationship to lead in the environment
1983
Brunekreef, B. | Noy, D. | Biersteker, K. | Boleij, J.S.M.
Nonpoint source pollution abatement in the Great Lakes Basin | Pollution abatement in the Great Lakes Basin
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.
Показать больше [+] Меньше [-]Determination of faecal coliforms in bivalves by multiple test tube method.
1983
Interface of forest and agriculture in nonpoint pollution control
1983
Fowler, John M. | Heady, Earl O. (Earl Orel) | Christensen, Douglas A.
Vertical concentration profile of photochemical oxidant along a mountain slope
1983
Sasaki, K. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Kurita, H. | Uchida, H.
LAS in river sediments, algae and water plants
1983
Katsuno, T. (Nagano-ken. Research Inst. for Health and Pollution (Japan)) | Tsukioka, T. | Kono, Y.
