Zobrazeno 1 - 10 of 58 pro vyhledávání: '"K.-R. Sperling"'
4
Vanadium in marine mussels and algae
Autor: K. R. Sperling, B. Bahr, J. Ott
Publikováno v: Fresenius' journal of analytical chemistry. 366(2)
A method is presented which is sensitive enough for the determination of vanadium (V) in marine organisms such as mussels and algae. It was sufficiently checked by a reference material and it was applied to V determination in blue mussels and brown a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a4a3295bdc931afb14c95bb45f1d40a
https://pubmed.ncbi.nlm.nih.gov/11225913
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6
On the dynamics of exploited populations ofTisbe holothuriae (Copepoda, Harpacticoidae)
Autor: M. Hoppenheit, K. -R. Sperling
Publikováno v: Helgoländer Wissenschaftliche Meeresuntersuchungen. 29:328-336
A total of 90, weekly exploited populations of the harpacticoid copepodTisbe holothuriae Humes were exposed to 148, 222, 333, 500, 750 or 1125µg Cd++ l−1, combined with exploitation rates of 10, 30, 50, 70 or 90% under conditions of surplus food s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d6bf42db56c10039dfd924dc194c34e
https://doi.org/10.1007/bf01614269
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7
Gas chromatographic-mass spectrometric investigations on lipophilic anthropogenic substances in marine organisms
Autor: K. R. Sperling, D. Janssen, T. Wulf
Publikováno v: Fresenius' Zeitschrift für analytische Chemie. 320:1-5
Methods are needed for the trace analytical identification of anthropogenic substances in marine matrices. Here we are mainly concerned with lipophilic compounds which may be enriched through food chains and, thus, represent a potential danger. Their
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d17f4c4d46270eeb1b560bdbebb2924
https://doi.org/10.1007/bf00481070
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8
Cadmium effects on growth and physiology ofUlva lactuca
Autor: K. R. Sperling, J. W. Markham, B. P. Kremer
Publikováno v: Helgoländer Meeresuntersuchungen. 33:103-110
The chlorophyceanUlva lactuca L. was grown in the laboratory in unialgal culture to sufficient size so that up to 70 discs, 24 mm in diameter, could be punched out of a single plant. Using such discs,U. lactuca was then tested with various concentrat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::030550a9eb191a465673ca13edc73447
https://doi.org/10.1007/bf02414739
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10
The tube-in-tube technique in electrothermal atomic absorption spectrometry—III
Autor: K.-R. Sperling
Publikováno v: Spectrochimica Acta Part B: Atomic Spectroscopy. 39:371-378
The tube-in-tube atomizer consists of a usual graphite tube into which a smaller graphite tube is inserted. The inner tube causes a thermal delay or the atomization compared to the heating of the outer tube. Several metals have, for comparison, been
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7bce7ff74a736246684f966fb92ff090
https://doi.org/10.1016/0584-8547(84)80044-0
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