X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Canadian Science Publishing  (6)
Type of Medium
Publisher
  • Canadian Science Publishing  (6)
Person/Organisation
Language
Years
FID
Subjects(RVK)
  • 1
    Online Resource
    Online Resource
    Apparent octanol/water partition coefficients of pentachlorophenol as a function of pH
    Canadian Science Publishing ; 1982
    In:  Canadian Journal of Chemistry Vol. 60, No. 16 ( 1982-08-15), p. 2104-2106
    Details
    In: Canadian Journal of Chemistry, Canadian Science Publishing, Vol. 60, No. 16 ( 1982-08-15), p. 2104-2106
    Abstract: The apparent 1-octanol/water partition coefficient (log P App ) of pentachlorophenol (PCP) varies in non-linear function with pH of the aqueous solution. In the range of pH 1.2 to 13.5 extreme values of log P App 4.84 at pH 1.2 and log P App 1.3 at pH 10.5 were observed. In the alkaline regime, log P App increases strongly with the ionic strength. The ion-corrected partition coefficient of PCP was found to be log P 5.05 in good agreement with literature values.
    Type of Medium: Online Resource
    ISSN: 0008-4042 , 1480-3291
    URL: Article
    DOI: 10.1139/v82-300
    RVK:
    VA 2870
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1982
    detail.hit.zdb_id: 1482256-8
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 2
    Online Resource
    Online Resource
    Historical versus recent levels of organochlorine contaminants in lamprey larvae of the St. Lawrence River basin, Québec
    Canadian Science Publishing ; 1995
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 52, No. 2 ( 1995-02-01), p. 268-275
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 52, No. 2 ( 1995-02-01), p. 268-275
    Abstract: This study shows that persistent organochlorine contaminants, including PCBs, reached higher concentrations in lamprey of the St. Lawrence River basin 40 years ago. A comparison was made of the concentrations of 22 organochlorine pesticides and 93 polychlorinated biphenyl (PCB) congeners in formalin-preserved lamprey ammocoetes collected between 1947–1950 and in 1990 in the St-François and Ste-Anne rivers, St. Lawrence River basin, Québec. Eight pesticides (β-BHC, α-Chlordane, γ-Chlordane, p,p′-DDD, o,p′-DDE, p,p′-DDE, p,p′-DDT, and Heptachlor) reached higher concentrations in the earlier period, with Mirex being the only pesticide found in higher concentrations in 1990. Seventeen PCB congeners (24(27), 28, 98(84), 101, 110(77), 128, 129, 141, 149, 151, 158, 174, 177, 180, 183, 187(182), and 198) had higher concentrations in the 1947–1950 period compared with 1990. A significant inverse relationship was found between the concentration of the various PCB congeners and sampling date. The concentrations of DDT have decreased significantly, while its metabolites, DDD and DDE, have increased significantly over the last 40 years.
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f95-027
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1995
    detail.hit.zdb_id: 7966-2
    detail.hit.zdb_id: 1473089-3
    SSG: 21,3
    SSG: 12
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 3
    Online Resource
    Online Resource
    Organic Contaminant Residues in Fishes from Nipigon Bay, Lake Superior
    Canadian Science Publishing ; 1977
    In:  Journal of the Fisheries Research Board of Canada Vol. 34, No. 6 ( 1977-06-01), p. 850-855
    Details
    In: Journal of the Fisheries Research Board of Canada, Canadian Science Publishing, Vol. 34, No. 6 ( 1977-06-01), p. 850-855
    Abstract: Three species of fish, caught at various distances from a kraft pulp and paper mill effluent discharge in Nipigon Bay, were analyzed for organic contaminants. Fishes from all sites contained residues of polychlorinated biphenyls and DDE. Most samples were also contaminated with hexachlorobenzene and several samples contained phthalic acid esters.From sampling sites close to the mill discharge, dehydroabietic acid was observed in one extract of each of the three fish species investigated. Two isomers of tetrachlorobenzene and one trichlorobenzene isomer were identified in a longnose sucker (Catostomus catostomus) extract from the vicinity of the mill outfall.
    Type of Medium: Online Resource
    ISSN: 0015-296X
    URL: Article
    DOI: 10.1139/f77-135
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1977
    detail.hit.zdb_id: 3036-3
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 4
    Online Resource
    Online Resource
    Correlation and Prediction of Metal Toxicity to Aquatic Biota
    Canadian Science Publishing ; 1980
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 37, No. 2 ( 1980-02-01), p. 211-218
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 37, No. 2 ( 1980-02-01), p. 211-218
    Abstract: Published data on the toxicity of metal ions to aquatic biota, in particular Daphnia magna, were analyzed for their correlation with ion specific physico-chemical parameters. Significant correlations were obtained for three groups of ions with similar electron configurations in the outer orbitals. Group I ions include Na (I), Be (II), Ba (II), Al (III), and Cr (VI) with inert gas-like electron configurations; group II ions include Cr (III), Mn (II), Fe (III), Co (II), Ni (II), Cu (II), Zn (II), As (V), Cd (II), Pt (IV), Au (III), and Hg (II) with partially or completely filled d electron orbitals; group III ions include Sn (II), As (III), Se (IV), and Pb (II), with filled d and s, but unfilled p electron orbitals. The toxicity of an ion within a group can be calculated from the general equation[Formula: see text]where pT is the negative logarithm of a metal ion concentration with a certain toxicity in mol∙L −1 ; AN is the metal's atomic number; ΔIP is the difference between the ion's ionization potential with the oxidation number (OX) and the ionization potential of the next lower oxidation number (OX − 1) in electron volts (eV); and ΔE 0 is the absolute value of the electrochemical potential between the ion and the first stable reduced state. The values for the constants a 0 , a 1 , and a 2 depend on the group of ions, the biota, and the particular toxic effect determined. The equation is applied to predict the toxicities of other ions under similar test conditions.Key words: toxicity, metals, ions, correlations, Daphnia magna, aquatic tests
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f80-027
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1980
    detail.hit.zdb_id: 7966-2
    detail.hit.zdb_id: 1473089-3
    SSG: 21,3
    SSG: 12
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 5
    Online Resource
    Online Resource
    Early Trend Determination of Organochlorine Contamination from Residue Ratios in the Sea Lamprey ( Petromyzon marinus ) and its Lake Whitefish ( Coregonus clupeaformis ) Host
    Canadian Science Publishing ; 1982
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 39, No. 4 ( 1982-04-01), p. 571-579
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 39, No. 4 ( 1982-04-01), p. 571-579
    Abstract: A detailed statistical evaluation of the levels of organochlorine contaminants in sea lamprey (Petromyzon marinus) and simultaneously caught lake whitefish (Coregonus clupeaformis) from the northern parts of Lakes Huron and Michigan is described. The analysis of residue ratios, both within each species and between, allows an immediate recognition of rising and falling trends of contamination with a high degree of confidence. This improvement over the conventional method of monitoring one species over several years is accomplished with comparatively little effort in sampling and chemical contaminant analysis. The described technique exploits the unique biological relationship of the lamprey and its host and is also based on the significantly shorter lifespan of the (adult) lamprey compared to that of the host. Rising trends in PCB and DDE contamination and declining trends for the levels of DDT, dieldrin, endrin, chlordane, hexachlorobenzene, heptachlorepoxide, and α-hexachlorocyclohexane were observed in 1978, the year of collection.Key words: organochlorine, contamination, trend, ratio, Petromyzon marinus, Coregonus clupeaformis
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f82-081
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1982
    detail.hit.zdb_id: 7966-2
    detail.hit.zdb_id: 1473089-3
    SSG: 21,3
    SSG: 12
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 6
    Online Resource
    Online Resource
    Comparison between lamprey ammocoetes and bivalve molluscs as biomonitors of organochlorine contaminants
    Canadian Science Publishing ; 1995
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 52, No. 2 ( 1995-02-01), p. 276-282
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 52, No. 2 ( 1995-02-01), p. 276-282
    Abstract: Lamprey ammocoetes were determined to be as suitable as adult bivalve molluscs for monitoring persistent organochlorine contaminants in the freshwater environment. Ammocoetes of four lamprey species and adults of three bivalve mollusc species, collected from the same seven rivers of the St. Lawrence River basin in Québec, were assayed for 21 organochlorine pesticides and for polychlorinated biphenyl (PCB) congeners. All organochlorine compounds assayed were detected in one or more of the 15 lamprey samples whereas Aldrin, β-BHC, and PCB congeners 1, 3, 12(13), 29, 54, 189, 191, and 199 were not detected in any of the nine bivalve samples. Nine pesticides (Aldrin, Dieldrin, γ-BHC, α-Chlordane, γ-Chlordane, o,p′-DDD, p,p′-DDD, p,p′-DDT, and a-Endosulfan) had higher concentrations in the lampreys. PCB congeners 167(185) and 209 had higher concentrations in bivalves. PCBs accounted for 96.6–99.4% of the organochlorine lipid burden in bivalves, but only 33.4–76.8% in lampreys. On average, ammocoetes had 44 times more lipids per body dry weight than did bivalves. The differences observed in concentrations and types of organochlorine compounds found in the two taxa may be due to differences in the amounts (observed) and types (postulated) of body lipids they each possess.
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f95-028
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1995
    detail.hit.zdb_id: 7966-2
    detail.hit.zdb_id: 1473089-3
    SSG: 21,3
    SSG: 12
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
Nothing or not found what you are looking for? Please check your search query or use the Interlibrary Loan Search.
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages