scholarly journals Occurrence of priority trace metals in tomatoes (Solanum lycopersicum L.) from some areas of Uasin Gishu County, Kenya

2020 ◽  
Vol 8 (2) ◽  
pp. 83-92
Author(s):  
Decrah Moraa Nyangena ◽  
James Oagare Arasa ◽  
Timothy Omara
Keyword(s):  
Trace Metals ◽  
Atomic Absorption ◽  
Atomic Absorption Spectroscopy ◽  
Who Guidelines ◽  
Cancer Risks ◽  
Daily Consumption ◽  
Lead And Cadmium ◽  
Solanum Lycopersicum L ◽  
Zinc Concentrations ◽  
Daily Intakes

This study determined the concentration of zinc, lead and cadmium in tomatoes consumed in some areas of Uasin Gishu, Kenya. Samples were taken in quintuplicate from Huruma and Bahati estates (Eldoret) and Chebaiywo (Kesses) and their metalliferous content were determined by atomic absorption spectroscopy. All samples had detectable levels of trace metals, with lead recording the highest concentration of 43.20 ± 0.31 mg/kg. Zinc concentrations were below WHO guidelines. Daily intakes ranged from 8.25 × to 2.59 × mg/kg/day. Though there are no probable cancer risks, hazard quotients indicated that deleterious health effects could arise from daily consumption of tomatoes.

Elemental Analysis of Medicinal Plant Moringa stenopetela leaves by Atomic Absorption Spectroscopy

2020 ◽  
Vol 11 (7) ◽  
pp. 1277-1291
Author(s):  
Tsegaye Bojago
Keyword(s):  
Trace Metals ◽  
Medicinal Plant ◽  
Atomic Absorption ◽  
Elemental Analysis ◽  
Atomic Absorption Spectroscopy ◽  
Moringa Stenopetala ◽  
Digestion Procedure ◽  
Wet Digestion ◽  
Gamo Gofa ◽  
Concentration Levels

The purpose of the current study is to analyze the concentration levels of selected trace metals: Ca, Cu, Fe, K and Zn in medicinal plant Moringa stenopetala grown in SNNPR, Ethiopia. A wet digestion procedure is used. Thus, the result showed that the concentrations of Ca, Cu, Fe, K and Zn in Moringa stenopetala grown in Gamo Gofa (Arbaminch) were;2.80±0.36, 0.866±0.134, 7.98±1.23, 3.02±0.63 and 84±0.92 mg/Kg, in Wolaita 3.28±0.28, 0.94±0.16, 7.13±1.32, 7.13±1.32 and 0.61±0.11mg/Kg and in Konso were; 2.97±0.67, 0.77±0.098, 6.79±0.73, 2.39±0.23 and 0.37±0.006mg/Kg respectively.

scholarly journals Lead behavior in soil treated with contaminated sewage sludge and cultivated with maize

2003 ◽  
Vol 46 (4) ◽  
pp. 499-505 ◽  
Author(s):  
Marcilene Ferrari Barriquelo ◽  
Marinês Aparecida Juliatti ◽  
Margarete Soares da Silva ◽  
Ervim Lenzi
Keyword(s):  
Sewage Sludge ◽  
Atomic Absorption ◽  
Metal Concentration ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Soil Samples ◽  
Treated Soil ◽  
Lead And Cadmium ◽  
No Absorption

Lead (Pb) behavior was studied in soil treated twice with sewage sludge contaminated with lead at interval of 18 months. Soil samples received five different treatments: three with lead [0 (reference); 2,500; 5,000 mug g-1] and two with a mixture of lead and cadmium (interferer) (2,500 + 2,500 and 5,000 + 5,000 mug g-1, respectively). Vases containing treated soil were cultivated with maize in a greenhouse for 75 days. Pb was extracted using nitric perchloric digestion and analyzed by atomic absorption spectroscopy. The soil, containing sewage sludge contaminated by lead presented a higher concentration of Pb. The metal concentration remained constant in all treatments at 20-60 cm depth. No absorption of Pb by the plants was detected.

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.

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 Mercury, Lead, and Cadmium in the Muscles of Five Fish Species from the Mechraâ-Hammadi Dam in Morocco and Health Risks for Their Consumers

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Mohammed Mahjoub ◽  
Soufiane Fadlaoui ◽  
Mohammed El Maadoudi ◽  
Youssef Smiri
Keyword(s):  
Trace Metals ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Health Risks ◽  
Fish Species ◽  
Graphite Furnace ◽  
Micropterus Salmoides ◽  
Lepomis Macrochirus ◽  
Absorption Spectrometry ◽  
Lead And Cadmium

This study aims to assess the degree of metal contamination (mercury (Hg), cadmium (Cd), and lead (Pb)) in the muscles of five species of fish Esox lucius, Sander lucioperca, Micropterus salmoides, Lepomis macrochirus, and Scardinius erythrophthalmus, from the Mechraâ-Hammadi Dam between July 2017 and May 2018, and to conduct a risk assessment for human consumers. Trace metals were determined by Graphite Furnace Atomic Absorption Spectrometry for the Pb and the Cd and by Cold Vapor Atomic Absorption Spectrometry for the Hg. The results gotten from the study of the muscles of the different fish species show that the higher mean amounts of Cd and Hg were determined in E. lucius, and the maximum mean levels of Pb were detected in S. erythrophthalmus. Results suggested that demersal fishes inhabiting near the sediments and piscivorous fishes with higher trophic level were likely to accumulate higher trace metal concentrations. The general order of bioaccumulation of the trace metals measured in the muscles of the fish species is as follows: Hg > Pb > Cd. Therefore, the bioaccumulation of Hg in fish studied is more important than that of Cd and Pb. Furthermore, these concentrations are higher in summer than in winter for all trace metals. All the values of the trace metals in the muscle tissues are below the maximum limits recommended by the European Community (EC) N° 1881/2006. However, estimation of noncarcinogenic health risks by the target hazard quotient indicated no obvious noncarcinogenic risks to humans that consume those fishes (THQ < 1). Results of THQ and maximum safe consumption indicated that Hg may cause more harm to human by fish consumption especially for E. lucius and S. lucioperca. Therefore, reduced intake of carnivorous fishes should be promoted as part of a healthier diet.

Schwermetalle in höheren Pilzen Cadmium, Zink und Kupfer Heavy Metals in Higher Fungi Cadmium, Zinc, and Copper

1977 ◽  
Vol 32 (3-4) ◽  
pp. 172-181 ◽  
Author(s):  
Hans-Ulrich Meisch ◽  
Johannes A. Schmitt ◽  
Wolfgang Reinle
Keyword(s):  
Heavy Metals ◽  
Trace Metals ◽  
Atomic Absorption ◽  
Atomic Absorption Spectroscopy ◽  
The Other ◽  
Special Value ◽  
Taxonomic Criterion ◽  
High Concentrations ◽  
Taxonomic Groups ◽  
Cadmium Zinc

Abstract In a series of 190 samples, higher fungi, especially from the genus Agaricus, were analyzed by atomic absorption spectroscopy on their content of the trace metals cadmium, zinc, and copper. Cd was found to be present in high concentrations in some Agaricus species belonging to special taxonomic groups. In relation to soil concentrations, Cd is highly enriched in some Agaricus spec., the enrichment being a taxonomic criterion of special value. Among the remaining genera of higher fungi, only Leucoagaricus and Amanita showed similiar enrichment properties for cadmium. The chemically related metals Zn and Cu were found to be relative uniformely distributed in all analyzed fungi. No synergistic or antagonistic relationship between Cd and the other two metals could be detected in the mushrooms.

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