Assertion: phosphate's concentration | /r/HasProperty | low
Facets:
value: very
type: DEGREE
value: usually
type: DEGREE
value: at the surface
type: LOCATION
value: in the oceans
type: LOCATION
Source sentences:
text: In particular, concentrations of atoms with high neutron capture cross-sections must be very low (for example, gadolinium concentrations must be lower than one part per million by weight).
text: In the oceans, the concentration of phosphates is very low, particularly at the surface.
text: The concentration of soluble phosphate in the soil solution is very low, and phosphorus is relatively immobile in the soil.
text: Although concentrations of NORM are usually quite low and the risk is minimal, safe handling of the material is important since higher concentrations of NORM can result when the material is processed.
text: The results revealed that the concentration of leaching samples for heavy metals such as Zn, Cd and Cu are very low and approach to zero.
text: Therefore, as discussed above, the required feedwater purity is very high and the permitted concentration of impurities introduced with the feedwater is very low.