In addition, owing to the hydrophobic nature of PC, H2O can separate from Bu4NClO4/PC when its content exceeds 6.8 wt %.
This result is similar to the previous reports on ZnO·g-C3N4 composites [32], i.e., the g-C3N4 particles with low crystallinity were dispersed uniformly on the ZnO surface when the g-C3N4 content was low, but crystalline g-C3N4 particles appeared when its content exceeded a threshold value (40%%).
Then, in Co-rich NiCo CNW networks the hcp phase begins to appear when its Co content exceeds 65%%.
According to a November 2013 NRC report, foods dominate human arsenic exposures when the levels in drinking water drop below 50 ppb (drinking water drives the exposures when its arsenic content exceeds that amount).
An overall dependence of the hardness and the elastic modulus on the estimated content of amorphous phase was found for amorphous phase contents exceeding about 20%.
In all samples, the proportion of well-rounded/rounded gravel contents exceeds 10%%, while the angular/very angular gravel content is below 40%%.
No study reported lanthanum contents exceeding the limit of quantification, a condition that would be harmful to the body.
However, the presence of maghemite (γ-Fe2O3) or magnetite (Fe3O4) impurity phases become apparent when Al contents exceeding 8 mol % are used in the synthesis solutions.
The moduli of samples with very low CNT content exceed the predictions by the rule of mixtures, whilst at higher concentrations fall slightly below the theoretical values.
High concentrations of pollutants exist in many places near the creek area (Haque et al. 2012) and its content has exceeded the prescribed limits.
Water sampled several miles downstream from the spill was safe to drink, but its iron and manganese content exceeded the secondary drinking water standards set by the Environmental Protection Agency, which govern taste and odor but not potential health effects, Mr. Moulton said.
