Thermomineral waters are traditionally used by the Peruvian population for various diseases. Objective: To determine and compare the chemical components of the thermal water of San Antonio de Putina-Puno during the seasons of 2017. Materials and methods: non-experimental design, carried out according to the recommendations included in section 1060B of Standard Methods for the Examination of Water and Wastewater in its 21 edition, Official Methods of Analysis of the Association of Official Analytical Chemists (AOAC) and US Standard (EPA). Metal concentrations were determined by Inductively Coupled Mass Spectrometry (ICP-MS) and nonmetals by ion chromatography (EPA 300.1993 rev.2.1) ANOVA was applied considering p <0.05 for significance. Results: 52 chemical components were analyzed in each season, and the most important are the average sodium 1604 mg / L, chloride 1,829.83 mg / L sulfa...

In this research study, the concentration of arsenic and lead was determined in eight different brands of lipsticks that are marketed in Metropolitan Lima. Materials and methods Non-experimental cross-sectional design the analytical method used was atomic absorption spectroscopy with a graphite furnace, the analysis of variance was applied to compare multiple means (ANOVA) considering p <0.05 for significance and the Student t-test . Samples were collected randomly in shopping centers and analyzed at the Chemical Analysis Services Unit (USAQ). results, lead values range from 0 ppm to 71.96 ppm, the average concentration being 6.60 ppm, 12.5% of the samples exceed the maximum permissible limits (LMP) of 10 ppm recommended by the Food and Drug Administration (FDA), Values for arsenic range from 0 ppm to 16.59 ppm, the average concentration is 3.34ppm, and 40.6% of the total samples exce...

Thermomineral waters are traditionally used by the Peruvian population for various diseases. Objective: To determine and compare the chemical components of the thermal water of San Antonio de Putina-Puno during the seasons of 2017. Materials and methods: non-experimental design, carried out according to the recommendations included in section 1060B of Standard Methods for the Examination of Water and Wastewater in its 21 edition, Official Methods of Analysis of the Association of Official Analytical Chemists (AOAC) and US Standard (EPA). Metal concentrations were determined by Inductively Coupled Mass Spectrometry (ICP-MS) and nonmetals by ion chromatography (EPA 300.1993 rev.2.1) ANOVA was applied considering p <0.05 for significance. Results: 52 chemical components were analyzed in each season, and the most important are the average sodium 1604 mg / L, chloride 1,829.83 mg / L sulfa...

In this research study, the concentration of arsenic and lead was determined in eight different brands of lipsticks that are marketed in Metropolitan Lima. Materials and methods Non-experimental cross-sectional design the analytical method used was atomic absorption spectroscopy with a graphite furnace, the analysis of variance was applied to compare multiple means (ANOVA) considering p <0.05 for significance and the Student t-test . Samples were collected randomly in shopping centers and analyzed at the Chemical Analysis Services Unit (USAQ). results, lead values range from 0 ppm to 71.96 ppm, the average concentration being 6.60 ppm, 12.5% of the samples exceed the maximum permissible limits (LMP) of 10 ppm recommended by the Food and Drug Administration (FDA), Values for arsenic range from 0 ppm to 16.59 ppm, the average concentration is 3.34ppm, and 40.6% of the total samples exce...