The accumulation of potentially-toxic metals by grazing ruminants

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The accumulation of potentially-toxic metals by grazing ruminants.

The main factors affecting the accumulation of potentially-toxic metals (PTM) by grazing animals are the presence of the metal, its concentration in herbage and at the soil surface, and the duration of exposure to the contaminated pasture and soil. In addition, the elapsed time between the contamination of the pasture and grazing, the quantity of soil ingested together with herbage, the mechani...

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Detection of potentially toxic metals by SERS using salen complexes.

Surfaced enhanced Raman scattering (SERS) can discriminate between metal complexes due to the characteristic "spectral fingerprints" obtained. As a result, SERS has the potential to develop relatively simple and sensitive methods of detecting and quantifying a range of metal ions in solution. This could be beneficial for the environmental monitoring of potentially toxic metals (PTMs). Here, sal...

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Predicting Forage Intake by Grazing Ruminants

Determination of the amount eaten and characteristics of the diet of grazing ruminants remains one of the most difficult tasks in research. While several lifetimes have been devoted to developing techniques to ‘measure’ intake and diet quality, they are laborious, expensive, and often lack both precision and accuracy. Hence, there has been little effort on the part of producers or consultants t...

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Toxic Effects of Heavy Metals on Plant Growth and Metal Accumulation in Maize (Zea maysL.)

Background: A pot experiment was conducted to determine the toxic effects of some heavy metals on the plant growth and seed yield of maize (Zea mays L.). Materials and Metheds: Heavy metals Mn, Pb, Cd, Cr and Co individually and in combinations were added as chloride salts in solutions to the pots before sowing. The test plants for were harvested after 80 days of germination and evaluated f...

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Evaluation of stream sediment contamination by potentially toxic elements around mining and farming areas (SE Nigeria)

In this work, the concentrations of the potentially toxic elements in stream sediments in SE Nigeria were assessed for pollution monitoring in mining, quarrying, and farming areas. The levels of iron, molybdenum, vanadium, copper, lead, zinc, nickel, cobalt, manganese, chromium, barium, and beryllium were determined. The concentrations of the elements were in the order of Fe > Ba > Mn > Cr > Zn...

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ژورنال

عنوان ژورنال: Proceedings of the Nutrition Society

سال: 2003

ISSN: 0029-6651,1475-2719

DOI: 10.1079/pns2003209