Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Tauno Kuokkanen"'
Autor:
Raija Paukku, Seija Sinkkonen, Leena Welling, Keijo Mäntykoski, Paula Maatela, Jaana Koistinen, Jaakko Paasivirta, Tauno Kuokkanen, Tiina Rantio, Anna-Lea Rantalainen
Publikováno v:
Chemosphere. 27:447-454
Contents of total organic chlorine and polychlorinated phenols, guaiacols, catechols, benzenes, cymenes, cymenenes, naphthalenes, toxic dibenzodioxins, toxic dibenzofurans, toxic PCB congener 77, alkylated dibenzofurans, alkylated bibenzyls and alkyl
Autor:
Tauno Kuokkanen
Publikováno v:
Chemosphere. 22:881-885
2,3,6-Trichloro-p-cymene (1) was synthesized by chlorination of p-cymene. A reaction mixture was distilled in a Fischer-Spaltrohr distilling apparatus. One fraction contained small quantities of chlorinated cymenenes (two isomers) which were concentr
Autor:
Tauno Kuokkanen
Publikováno v:
Chemosphere. 19:1349-1356
Thirteen chlorinated cymenes were synthesized and their 1 H NMR, 13 C NMR, and mass spectra were recorded. The products were purified by preparative gas chromatography. The structures of chlorocymenes were verified by means of their coupled 13 C NMR
Food chain enrichment of organochlorine compounds and mercury in clean and polluted lakes of Finland
Autor:
Jukka Särkkä, Tauno Kuokkanen, Kari Surma-Aho, Tarmo Humppi, Markku Marttinen, Jaakko Passivirta
Publikováno v:
Chemosphere. 12:239-252
Lakes polluted by pulp mill and urban wastes including chlorobleaching of pulp, semipolluted lakes and reference lakes in nearly natural condition in Central Finland were studied for contents of mercury, methyl mercury and organochlorine compounds in
Publikováno v:
Journal of Magnetic Resonance (1969). 78:9-22
Accurate 1 H 1 H spin-spin couplings of 3,5-dichlorostyrene (DCS) and β,β-dibromo-2,6-dichlorostyrene (DBDCS) were determined in a few solvents and at various temperatures. Most of the variation of the couplings is accounted for by changes in th
Autor:
Tauno Kuokkanen, Pekka Autio
Publikováno v:
Chemosphere. 18:1921-1925
p-Cymene was chlorinated by chlorine in CCl4. The products of the chlorination were separated by distillation and purified by preparative gas chromatography. The structures of chlorocompounds were confirmed by means of their NMR and mass spectra. The
Autor:
Jaakko Paasivirta, Keijo Mäntykoski, Tauno Kuokkanen, Jaana Koistinen, Kari Rissanen, Erkki Mannila
Publikováno v:
Chemosphere. 19:149-154
Persistent planar or coplanar aromatic chlorocompounds (PLACs) with structures to fit in the dioxin receptor behave like PCDDs and PCDFs in their analytical clean up with carbon column - reversed elution. Structures of PLACs in emission and environme
Autor:
Tauno Kuokkanen
Publikováno v:
Chemosphere. 19:1243-1249
Seven chlorinated p-cymenes were synthesized by the chlorination of p-cymene and the alkylation of chlorinated toluenes. 2,6-Dichloro-p-cymene was made by the Sandmeyer reaction from 2-amino-6-chloro-p-cymene and 2,3,5-trichloro-p-cymene was synthesi
Autor:
Jaana Koistinen, Tauno Kuokkanen
Publikováno v:
Chemosphere. 19:727-730
Contents of aromatic chlorohydrocarbons, toxaphene, PCDDs, and PCDFs in spent bleach liquors after biological purification were screened with GC/MS. The structures of model compounds were confirmed by NMR spectroscopy and they were used in specificat