Zur Frage biogener Anreicherungen von Vanadium und Nickel in Pflanzen des Karbonzeitalters / The Question of Biogenous Enrichments of Vanadium and Nickel in Plants of the Carbon Age

1978 ◽  
Vol 33 (9-10) ◽  
pp. 616-622 ◽  
Author(s):  
Hans-Ulrich Meisch ◽  
Wolfgang Reinle ◽  
Bernd-Arwed Richter
Keyword(s):  
Trace Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Carbonaceous Material ◽  
Coal Beds ◽  
Representative Samples

Abstract Original carbonaceous material of fossile carbon plants from the divisions of the Equisetophyta (Calamariaceae), Lycophyta (Lepidodendraceae, Sigillariaceae), Filicophyta (Filicatae), and Spermatophyta (Pteridospermatae, Cordaitidae) was analyzed by atomic absorption spectroscopy on its content of the trace metals vanadium and nickel. The average V-content was found to be 10 to 100 fold higher than that of the neighbouring coal beds or that of the embedding materials, while the Ni-concentrations were found to be almost in the same range. The highest contents of V and Ni were found in the Calamariaceae and in the Pteridospermatae. The V-and Ni-contents of the fossile carbon plants are compared to those of related recent plant genera (clubmosses, horse­ tails, ferns), which were analyzed by 46 representative samples. A possible biogenous enrichment of V and Ni in plants of the carbon age is discussed.

scholarly journals Analysis and Determination of Lead and Chromium in Commercially Purchased Vegetables (Carrots, Potatoes and Tomatoes)

2021 ◽  
pp. 54-59
Author(s):  
J. I. Bungudu ◽  
Christine Cheesley
Keyword(s):  
Trace Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Human Consumption ◽  
Analytical Technique ◽  
Health And Nutrition ◽  
Absorption Of Light ◽  
The Uk

Excess trace metal contamination in vegetables is a growing concern globally. Plants can be contaminated by trace metals, and it is important to understand the degree of contamination and the inherent risk. Vegetables are a staple in human diets, thus knowing the level of concentration of these metals within the diet is increasingly important. This project is designed to assess levels of trace metals in vegetables using Atomic Absorption Spectroscopy. Atomic absorption spectroscopy (AAS) is an analytical technique that determines unknown concentrations of elements using absorption of light from the desired elements with the aid of the working calibration curve obtained from the series of standards. Tests were done on three different commonly vegetable available in the UK to identify whether levels of trace metals fall within safe levels for human consumption. The vegetables selected were carrots, potatoes, and tomatoes. The concentration within organic vegetables did not significantly differ from the non-organic ones, though the results show, in some cases higher concentration of chromium in the potato and carrot peel. This is worthy of note from a health and nutrition perspective especially for those people that have a deficiency of these trace metals in their body or conversely wanted to manage their intake. The mean concentrations of these metals are in decreasing order of >Pb>Cr in most vegetables but in some Cr>Pb. The good thing is that the concentrations of these metals in vegetables purchased in the UK all fall below the maximum limits set by WHO/FAO and are thus considered safe for human consumption.

scholarly journals Trace nutrients

1979 ◽  
Vol 41 (2) ◽  
pp. 253-261 ◽  
Author(s):  
R. W. Wenlock ◽  
D. H. Buss ◽  
E. J. Dixon
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Animal Products ◽  
Brown Sugar ◽  
Nationally Representative ◽  
Representative Samples

1. The amount of manganese in nationally-representative samples of prepared and cooked goups of foods, and in a wide variety of individual foods, was determined by atomic absorption spectroscopy.2. The average British diet was calculated to provide 4.6 mg Mn/d of which half was derived from tea and other beverages, 30% from cereals, and 15% from vegetables and fruit. Animal products provided little Mn.3. Individual foods other than tea which were particularly rich in Mn in Britain were unrefined and partially-refined cereals, and some spices and herbs. Some vegetables and fruit, coffee, wine, chocolate and brown sugar also contained significant amounts of Mn.

scholarly journals Determination of Trace Metals with Newly Synthesized Coniine Dithiocarbamate by Atomic Absorption Spectroscopy

2004 ◽  
Vol 1 (2) ◽  
pp. 99-104 ◽  
Author(s):  
K. Suvardhan ◽  
K. Suresh Kumar ◽  
K. M. Reddy ◽  
M. V. Jyothi ◽  
P. Chiranjeevi
Keyword(s):  
Trace Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Water Samples

A procedure is developed for the determination of Cd, Cu, Mo, Pb, Te and Ni in natural and spiked water by Atomic Absorption Spectroscopy (AAS) after preconcentration on a coniine dithiocarbamate supported by polyurethane. The sorbed elements are subsequently eluted with 5 mol L-1HNO3and the acid eluates are analysed by AAS. A 20 mL syringe served as a chromatographic preconcentration column. The sorption recoveries of elements were higher in the order of 99%. The method is also applied successfully for the determination of Cu, Cd, Mo, Pb, Te and Ni in natural and spiked water samples.

Schwermetalle in höheren Pilzen, II / Heavy Metals in Higher Fungi, II

1977 ◽  
Vol 32 (9-10) ◽  
pp. 712-723 ◽  
Author(s):  
Johannes A. Schmitt ◽  
Hans-Ulrich Meisch ◽  
Wolfgang Reinle
Keyword(s):  
Heavy Metals ◽  
Trace Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Fe And Mn

Abstract In several series of 262 samples, Higher Fungi, especially from the Tremellales and Gastero-mycetes, were analyzed by atomic absorption spectroscopy on their content of the trace metals manganese and iron. Both elements were found to be present in higher concentrations in some species of the Tremellales and Phallales. In the case of wood-destroying fungi, the Fe-and Mn-contents of the substrates were compared to those of the corresponding fungi. Only the species with the highest level of these metals reached the same contents as their substrates or a poor enrichment. Among the remaining species of the Higher Fungi, only in the case of the epigean Phallales, a possible biochemical role of manganese has been discussed.

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