Validación de amoniaco y sólidos suspendidos en aguas potables, residuales y naturales

Abstract

Abstract: The main objective of this research work was the validation of analytical methods for the determination of ammonia and suspended solids in drinking, residual and natural waters. The development was based on methods 2540. B of the Standard Methods for the Examination of Water and Wastewater and 973.49 of the AOAC, respectively, complying with the NTE INEN ISO/IEC 17025: 2018 Standard. The scope for each method was established by defining the corresponding working range. We work with different types of water (natural, residual and consumption). Each of them was taken at two different sampling points. For the validation, fifteen repetitions of each were carried out, as well as of the different fortifications carried out that considered different concentration levels. The results obtained from the tests allowed the statistical analysis to establish values for the validation parameters such as detection limit and quantification limit, working range, repeatability, and reproducibility, uncertainty.