Incidencia del pH en el intercambio aniónico (SO4–2, NO3–, NO2–, PO4–3) y catiónico+2) del estrato palustre atillo (NA+, K+, MG+2 y CA+2) del estrato palustre atillo.

Abstract

The objective of this study was to evaluate the incidence of pH in the anionic and cationic exchange of the stratum of marsh vegetation of the Atillo lagoon in its hydrographic basin. Interstitial water samples were obtained using the photometry and spectrophotometry method of atomic absorption of flame. Different anions and cations were analysed to determine the concentrations and how the pH influences them. The determination of anions was carried out with a HACH® Spectrophotometer model DR2800, PhosVer® 3 phosphate reagent for 10 mL of sample, NitriVer® Nitrite Reagent for 10 mL of sample, NitraVer® Nitrate Reagent for 10 mL of sample, Vario Sulfa 4 for 10 mL of sample. With these spectrophotometric characteristics of analysis, quantification parameters were determined: Phosphates (P043-), Nitrites (N02-), Nitrates (N03-), and Sulfates (S042-). The determination of cations in flame atomic absorption spectrophotometry aspirates to have a sample in a flame and is atomized. For the statistical analysis, the ANOVA analysis of variance was used, resulting in the existence of a statistically significant difference between the average pH between one level of points and another; Of the 7 points analyzed, the most outstanding pH values in the sampling site were 7.14 for the highest value and 6.34 for the lowest value. s concluded that the incidence of pH in the anion exchange (S04-2, N03-, N02- P04-3) has a more significant correlation since their concentrations can vary depending on the pH range. In the cationic case (Na+, K+, Mg+2 and Ca+2), the pH correlation is weak, so the variation of the pH range has little influence. Therefore, it is recommended to update the information since there are few references to the investigation.