The phrase "and the highest concentrations" is correct and usable in written English.
It can be used when discussing levels or amounts of a substance, typically in scientific or analytical contexts.
Example: "The study found that the chemical was present in the water samples, with the highest concentrations detected near the industrial site."
Alternatives: "and the greatest amounts" or "and the most significant levels".
Apart from a dip in 2010, during the long economic slump, the rise has been inexorable.Many farmers work at home, and the highest concentrations of home workers are still in deeply rural regions.
Zn concentration in soil solutions exhibited significant scattering over the active (unfrozen) period with lowest concentrations in the beginning of summer and the highest concentrations in the end of summer or in the autumn (Figure 3).
EIS measurements of the steel electrode in 1.0 M HCl and 0.5 M H2SO4 solutions without and with the lowest and the highest concentrations of RL were obtained after 30 min at its open-circuit potential.
At the concentration of 6.25 mg/L, the absorbance value of yeast treated with AgNO3 sinks to 0.85 and continued to sink when yeast cells were exposed to higher and the highest concentrations.
This plot presented the lowest Al concentrations in the solid phase (corresponding to total non-crystalline Al, Al bound to organic matter, and inorganic non-crystalline Al), and the highest concentrations of total Al in solution.
To check the homogeneity of variances, the standard deviations (s1) and (s2) of the lowest and the highest concentrations from calibration curves and the PG ratios (s12/s22 or s22/s12) were calculated and compared with the critical value F9 9 0.99 = 5.35.
Plants give it off during photosynthesis, and so the highest concentrations researchers normally measure it are in the Amazon rainforest.
Fluoroquinolones were the most prevalent drugs and showed the highest concentrations (Table 1).
The Rhine - The undoubted king of European waterways is the Rhine, and its course through Switzerland, Germany, and the Netherlands is marked by majestic valleys, scenic vineyards, and the highest concentration of medieval castles in the world.
It is subjected to the most congested predator traffic (and the highest concentration of microbes, fungi, and possible bacterial attack) on the planet.
