ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
  • Spektralphotometrie, Atomabsorption  (9)
  • Coleoptera
  • Springer  (11)
  • PANGAEA
  • 1975-1979  (11)
Collection
Keywords
Publisher
  • Springer  (11)
  • PANGAEA
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Trapping the western pine beetle at and near a source of synthetic attractive pheromone Effects of trap size and position (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 519-531 
    Details
    ISSN: 1573-1561
    Keywords: Pinus ponderosa ; Dendroctonus brevicomis ; western pine beetle ; attractant ; pheromone ; behavior ; traps ; Coleoptera ; Scolytidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Western pine beetles were caught on unbaited sticky traps placed near a source ofexo-brevicomin, frontalin, and myrcene. Size of trap, distance and direction from the source of attractant, and height from the ground were varied. Significant differences in trap catch were observed in relation to each of the variables. Traps close to the source of attractant caught more beetles than traps farther from the source. Traps downwind of the source of attractant caught more beetles than did upwind traps. More males than females were trapped close to the source of attractant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987837
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Determination of organosilicon compounds in water by atomic absorption spectroscopy (1978)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 292 (1978), S. 362-364 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Siliciumorganoverbindungen in Wasser ; Spektralphotometrie, Atomabsorption ; Extraktionsverfahren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary An extraction technique is described for the determination of ppm concentrations of both hydrophobic and hydrophilic methylsiloxane compounds in water, based on a single extraction with a mixed solvent of (1∶1) l-pentanol and methyl isobutyl ketone followed by the determination of the silicone compounds extracted into the mixed solvent by atomic absorption spectroscopy. The method is applicable over the concentration range 0.3–30 ppm Si. Standard deviation in the case of 10 ppm Si is 0.313.
    Notes: Zusammenfassung Zur Bestimmung von ppm-Konzentrationen an hydrophoben und hydrophilen Methylsiloxanverbindungen im Wasser wird ein Extraktionsverfahren beschrieben. Hierbei wird nach einfacher Extraktion mit l-Pentanol/Methylisobutylketon (1∶1) das Silicium im Extrakt mit Hilfe der AAS bestimmt. Der erfaßbare Konzentrationsbereich liegt bei 0,3–30 ppm Si. Die Standardabweichung beträgt bei 10 ppm Si 0,313.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00481552
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A simple tantalum strip atomizer for the flameless atomic absorption determination of trace metals in water (1975)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 277 (1975), S. 19-24 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Silber, Cadmium, Blei, Zink in Wasser ; Spektralphotometrie, Atomabsorption ; flammenlos, Ta-Streifen ; Best. von Zink neben Albumin in Serum ; Spektralphotometrie, Atomabsorption ; flammenlos, Ta-Streifen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A simple and efficient tantalum strip atomizer is described suitable for use in the atomic absorption determination of trace elements in water. The cell operates with an inexpensive Powerstat-transformer unit to provide the necessary electrothermal heat for atomization. It can be easily fitted in the place of the burner in atomic absorption instruments. The atomizer has been used to determine Ag, Cd, Pb, and Zn in tap water samples and Zn in the presence of albumin.
    Notes: Zusammenfassung Die elektrische Erhitzung des Tantalstreifens wird mit Hilfe einer preisgünstigen Energiequelle (Powerstat/Transformator) vorgenommen, die leicht anstelle des Brenners in den üblichen Geräten untergebracht werden kann. Das Verfahren wurde zur Bestimmung von Ag, Cd, Pb und Zn in Leitungswasser sowie von Zink neben Albumin angewendet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00591871
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    AAS-Bestimmung gelöster Spurenelemen im Bodenseewasser des Überlinger Sees (1979)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 296 (1979), S. 114-124 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Spurenelementen, Schwermetallen in Wasser ; Spektralphotometrie, Atomabsorption ; Bodensee
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Monatliche AAS-Messungen im Jahre 1977 auf die Elemente As, Pb, Cd, Cr, Hg, Se, Zn, Fe, Mn, Ni, Co, Al und B im Rohwasser und im Trinkwasser des Zweckverbandes Bodenseewasserversorgung sowie an ausgewählten Tiefenprofilen im Überlinger See werden diskutiert. Die angewandten Untersuchungsmethoden werden eingehend erläutert. Die Ergebnisse zeigen, daß der Gehalt der toxischen Metalle im Bodenseewasser unter 1% der laut Trinkwasserverordnung zulässigen Grenzkonzentrationen liegt. Die höchsten Konzentrationen mit maximal 7% des Grenzwertes wurden beim Element Arsen gefunden — eine für die Bodenseetrinkwasserwerke jedoch immer noch beruhigende Zahl. Dennoch soll speziell diesem Element in weitergehenden Untersuchungen erhöhte Aufmerksamkeit gewidmet werden.
    Notes: Summary A survey is given based on monthly measurements over a one-year period (1977) to determine the trace metals in the raw and drinking water and in two vertical profiles of the Lake of Constance (Überlinger See) by means of atomic absorption spectrometry. The methods used are discussed in detail. The results showed that the content of the toxic metals Hg, Se, Pb, Cr and Cd amounts to less than 1% of the concentration limits due to German law. The highest concentrations were found for the element As, which reached about 7% of the limiting concentration. Further investigations are therefore concerned with this element.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00495173
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Production of cardiac glycosides by chrysomelid beetles and larvae (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 63-77 
    Details
    ISSN: 1573-1561
    Keywords: Chemical defense ; exocrine secretion ; cardenolides ; Chrysochloa ; Chrysolina ; Coleoptera ; Chrysomelidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Cardenolides were looked for in 17 chrysomelid beetles belonging to 11 genera from three subfamilies, and they were found only inChrysolina andChrysochloa species (Chrysomelinae, Chrysolinini). The food plants of these insects are not known to produce cardenolides. TheChrysochloa and mostChrysolina species secrete a complex mixture of cardenolides, butChrysolina didymata secretes a single compound, andChrysolina carnifex, none. Several quantitative and perhaps qualitative differences were observed in the patterns of cardenolides produced by far distant populations of bothChrysolina polita andC. herbacea, collected in either France and Belgium, or Greece. These differences remain constant from one generation to the other, whatever the food plant is, and appear to be genetic. InC. polita from Greece, the pattern is unchanged after four generations bred in the laboratory onMentha ×villosa, which is known to be without cardenolides. In adults, the cardenolides are released with the secretion of the pronotal and elytral defensive glands, but in the larvae which lack the defensive glands, cardenolides are also produced. The total amount of cardenolides and the complexity of their mixture increases through the life cycle of the insects. The six main cardenolides secreted byC. coerulans were identified as: sarmentogenin, periplogenin, bipindogenin, and their corresponding xylosides.C. didymata secretes only sarmentogenin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987688
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Atomabsorptions-Spektrometrie ohne Wägung an Bord eines Forschungsschiffes (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 347-349 
    Details
    ISSN: 1618-2650
    Keywords: Spektralphotometrie, Atomabsorption ; ohne Wägung, auf See
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Um das auf See problematische Einwiegen von Erzproben zur Analyse durch Atomabsorptions-Spektrometrie zu umgehen, wird eine indirekte Ermittlung der eingesetzten Probemenge durch die Bestimmung eines „Leitelementes“ mittels Isotopfluorescenzanalyse erprobt. Am Beispiel von Manganknollen des Pazifischen Ozeans, die 15–30% Mn, 0,5–1,5% Ni und Cu enthalten, wird gezeigt, daß sich die beiden zuletzt genannten Elemente auf diese Weise mit einer Genauigkeit von besser als 10% rel. bestimmen lassen.
    Notes: Abstract The weighing of ore samples to be analyzed by atomic absorption spectrometry is somewhat problematical at sea. To evade the weighing, tests have been made to try out an indirect determination of the mass of the sample by determining a “reference element” by means of isotope fluorescence analysis. The analysis of manganese nodules from the Pacific Ocean, containing 15–30% of Mn and 0.5–1.5% of Ni and Cu, is quoted as an illustration. It has been shown that the two latter elements can be determined in this way with an accuracy of at least 10% rel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429510
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Spurenanalyse mit der flammenlosen AAS unter Verwendung fester Proben (1979)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 298 (1979), S. 123-127 
    Details
    ISSN: 1618-2650
    Keywords: Spektralphotometrie, Atomabsorption ; flammenlos, Spurenanalyse, direkte Probenzuführung in Graphitofen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die direkte Bestimmung von Spurenelementen in metallischen und oxidischen Proben im Gehaltsbereich 0,1–10 μg/g (entsprechend 10−5-10−3 Massen-%) wird beschrieben. Hierzu bietet sich die Verwendung einer speziellen Graphitofen-Boottechnik an, mit deren Hilfe die Proben direkt in fester Form eingebracht werden können. Zwei unterschiedliche Verfahren sind erforderlich: die mehrfache Aufschmelzung für metallische Proben und die zweifache Verdampfung von oxidischen Stoffen. Die Resultate beider Verfahren werden diskutiert.
    Notes: Summary The direct determination of trace elements of metallic and oxidic samples in the range of 0.1–10 μg/g (or 10−3–10−5 mass-%) is described by using a special graphite furnace boat-technique with direct sample input. Two different procedures are necessary: a multiple heating technique in case of metallic samples and a double vapourization technique in case of oxides. The results using both techniques are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00521651
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Einsatz der flammenlosen Atom-Absorption (Graphitrohrküvette) zur Bestimmung von Kupferspuren in Stahl und anderen Metall-Legierungen nach Extraktion (1977)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 283 (1977), S. 1-8 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Kupfer in Legierungen, Stahl ; Spektralphotometrie, Atomabsorption ; Graphitrohrküvette, Spuren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Bestimmung kleiner und kleinster Kupfergehalte in Stahl und anderen Metallegierungen durch Atomabsorptions-Spektralphotometrie wurde untersucht. Dabei konnte festgestellt werden, daß die bei Untersuchungen an wäßrigen Lösungen mit der Flamme auftretenden merklichen Interferenzen durch Begleitelemente völlig ausgeschaltet werden können, wenn das Kupfer mit Pb-DDTC in Chloroform extrahiert und der Extrakt mit der Graphitrohrküvette untersucht wird. Ferner wurde festgestellt, daß die Graphitrohrküvette der Flamme bei den Arbeiten mit organischen Lösungsmitteln erheblich überlegen ist, da von der Art der Lösungsmittel keine Einschränkung des Einsatzbereiches erfolgt. — Die Methoden der kontinuierlichen Veränderungen nach Job und des molaren Verhältnisses nach Yoe u. Jones zur Bestimmung der Komplexzusammensetzung konnten für das System Cu-DDTC auf das Arbeiten mit der Graphitrohrküvette übertragen werden.
    Notes: Abstract The determination of small and smallest amounts of copper in steel and other metal alloys by atomic absorption spectroscopy was investigated. It has been found, that the interferences caused by accompanying elements in the determination in aqueous solution with the flame can be completely removed by extracting the copper with Pb-DDTC in chloroform and determining this extract with the heated graphite atomizer. Moreover, it was recognised, that working with the heated graphite atomizer in organic solutions shows great advantages compared with the flame, because any solvent may be used. The methods of continuous variation by Job and the molar ratio by Yoe and Jones for the determination of the complex stoichiometry were transferred to the system Cu-DDTC by working with the heated graphite atomizer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00439758
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Determination of traces of copper, nickel and cobalt by solvent extraction and atomic absorption spectrophotometry (1977)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 284 (1977), S. 41-41 
    Details
    ISSN: 1618-2650
    Keywords: Best, von Kupfer, Nickel, Kobalt in Geolog. Material ; Spektralphotometrie, Atomabsorption ; Extraktion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00464033
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Routinemäßige Bestimmung von Eisen im extremen Spurenbereich (1977)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 287 (1977), S. 317-319 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Eisen in Biolog. Material ; Spektralphotometrie, Atomabsorption ; Druckaufschluß
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00634513
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...