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EC number: 235-122-5
CAS number: 12070-10-9
Background and ambient concentrations of vanadium in the environment
(air, aquatic, terrestrial and sediment compartment) based on monitoring
data were evaluated to determine the typical background and reasonable
worst case ambient concentration of vanadium in freshwater, sediment,
soil and air for the EU-27 and Norway (see attached report "Exposure
assessment of vanadium - Measured V-levels in EU surface water, soil,
sediment and air"). Specifically, large data sets that originate from
National, federal and Academic Environmental Agencies and Institutes, or
measurements from national/international monitoring programs (e.g.
EIONET, FOREGS, GEMAS) were taken into account. The natural background
concentration is the natural concentration of an element in the
environment that reflects the situation before any human activity
affected the natural equilibrium. Because of historical and current
anthropogenic input from diffuse sources, the accurate measurement of
natural background concentrations is not feasible in the European
environment anymore. As an alternative, baseline background
concentrations are measured. This is the concentration of an element in
the present or past corresponding to very low anthropogenic pressure
(i.e., assumed to be close to the natural background). Ambient
concentrations are defined as the sum of the natural background of an
element with diffuse anthropogenic input in the past or present (i.e.,
influence of point sources not included). Reasonable worst-case (RWC)
ambient concentration levels are used for the regional risk assessment
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