Sentence examples for many trace metals from inspiring English sources

For many trace metals, the ratio of the atmospheric flux to the riverine flux for coastal and remote oceanic areas may be greater than one, indicating the importance of atmospheric transport.

Recent workers [36 55] have shown that many trace metals can form strong complexes with natural organic ligands.

Both field and laboratory studies have demonstrated that many trace metals tend to be strongly associated with iron (hydr oxides [14] or manganese (hydro oxides [15].

In fact, Mn3+/Mn5+ oxides are strong oxidants that can oxidize and sequester many trace metals found in nature (García-Sánchez et al. 1999).

Concentrations of major, minor, and many trace metals and metalloids were determined on the nitric-acid preserved samples using inductively coupled plasma-atomic emission spectrometry (ICPAES) as described elsewhere.

More than 30 kinds of Mn oxide/hydroxide minerals ubiquitously distribute in natural environment [2], which are highly chemically active, and have been recognized as being important in controlling the availability and distribution of many trace metals [2 6].

As a result, vernadite acts as a sink for many trace metal elements.

In many organisms, trace metals have been shown to act as co-factors of several antioxidant enzymes such as superoxide dismutase (SOD), peroxidases (POD), ascorbate peroxidase (APX) and other enzymes of ascorbate – glutathione pathway [ 54].

Geothermal systems that exist in areas of recent volcanism are characterized by common geochemical parameters, e.g., high temperature, lack of oxygen, presence of sulphides and many rare and trace metals, etc.

Many elements, including the essential trace metals iron, cobalt, and copper, show surface depletions but in general exhibit behaviour more complex than that of phosphate, nitrate, and silicate.

This has resulted in toxic levels of trace metals in many soils and sediments [8, 9, 16], and a pressing need to develop accurate predictive models of Cu speciation in the environment.