Occurrence of pharmaceutically active compounds in groundwater and their effects to the human health
Abstract
Groundwater contamination by pharmaceutically active compounds (PhACs) has been considered a public health concern worldwide. Alongside the potential toxicological risk of these organic substances, many countries still rely on groundwater for drinking water supply. Thus, this study identified a priority list of seven licit PhACs, comprising acetaminophen (ACT), tramadol (TRA), carbamazepine (CBZ), erythromycin (ERY), sulfamethoxazole (SMX), metformin (MET), and oxazepam (OXZ). Consumption, concentration, and human toxicity in silico results were collected from open access databases. These three indicators were analyzed separately and grouped through a general risk index. The consumption index (data from the USA and Brazil) indicated that ACT, TRA, and MET are the most consumed. Monitoring samples from the USA and Europe (n = 816) indicated that OXZ and ERY stand out as the higher occurrence index considering both regions, but the ranking for each region showed considerable differences. When assessing toxicological risk, an index ≥ 0.5 was attributed to CBZ, MET, OXZ, SMX, and TRA. The general risk indicated the need to be attentive to MET, OXZ, and TRA as they presented ≥ 0.5 index values for at least two indicators.
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