Validacion del método voltamperométrico de redisolución anódica para determinar arsénico en aguas de procesos hidrometalúrgicos en el Cantón Portovelo

Abstract

The oldest mining area in Ecuador is located in the cantons of Zaruma and Portovelo, so the study population of this research is Zona Industrial El Pache - Portovelo, because there are 27 profit plants that are located on the bank of the Calera River, this industrialization is generating a negative impact on the environment and its water sources , due to the reagents used for the refining of the material in order to obtain gold and silver, the wastewater produced in these processes generates large amounts of heavy metals, including arsenic, lead and cadmium, with arsenic being the most relevant in this research due to the large amount found in the medium and called a mortal enemy by the World Health Organization where it is estimated that 1 of every 100 people consume this type of water in a range greater than 0.05 ppm, causing serious diseases such as melanosis, keratosis, skin cancer, bladder, among others, this poisoning occurs over a period of 5 to 20 years. The OMS also emphasizes that a limitation is to find a simple, economical test, that is In Situ and that has a wide detection limit, so the authors have as their main objective to validate the Voltamperometric method of Adodic Resolution by Square Wave to detect and quantify arsenic in waters of Hydrometalurgical processes, electroanalytic techniques shows to have a wide limit of detection, high sensitivity, precision, simple methodology and more than anything low cost.