The phrase "affected the concentrations of" is correct and usable in written English.
It can be used when discussing how a particular factor or variable has influenced the levels or amounts of certain substances or elements in a given context.
Example: "The new fertilizer significantly affected the concentrations of nitrogen in the soil."
Alternatives: "influenced the levels of" or "altered the amounts of".
These parameters also affected the concentrations of oxidized chlorine species during treatment.
The calcite concentration distribution, in turn, affected the concentrations of aqueous carbonate and calcium, and pH through dissolution, as river waters intruded and receded from the site at different velocities in response to stage changes.
Quantitatively, addition of NaCl affected the concentrations of DAMP4var-pexiganan protein (Fig. 1b) and DNA (Fig. 1c) in the solutions.
Emission transport from North American and Siberian boreal wild fires has substantially affected the concentrations of trace gases at PMO (Helmig et al. 2008; Honrath et al. 2004; Lapina et al. 2008; Pfister et al. 2006; Val Martín et al. 2006; Val Martin et al. 2008a, b).
Agricultural activates usually lead to higher salinity and affected the concentrations of a large number of inorganic chemicals in groundwater, for example: NO3 −, Cl−, SO4 2−, H+, PO4 3−, HCO3 −, K+, Mg2+, Ca2+, Sr2+, Ba2+ (Ma et al. 2005; Böhlke 2002).
In the present study, a two-way ANOVA showed that shading significantly affected concentrations of total and selected flavonoids in C. paliurus leaves, and meanwhile provenance and the interaction between shading and provenance also significantly affected the concentrations of quercetin and isoquercitrin.
Cultivars and malt modification affected the concentration of several proteins in beer.
Waste material state, density of packing and lengths of column all significantly (P < 0.05) affected the concentration of ions in the leachate.
Irrigation treatments affected the concentration of four nutrients (P, Fe, Zn and Na) and uptake of seven nutrients (P, K, Ca, Mg, Na, Fe and B) significantly.
Defoliation only slightly affected the concentration of myricetin at harvest.
Pollination treatment significantly affected the concentration of calcium, magnesium and zinc in experimental apples (Table 2).
