| Popis: |
Bottled water is becoming increasingly popular around the world. Several potentially harmful trace metals may be present in bottled water. In this study, the use of inductive coupled plasma-mass spectrometry (ICP-MS) allows to determine the contents of 8 parameters (Al, As, Cd, Cr, Ni, Pb, Sb and U) in 17 brands of bottled water in Morocco. The results clearly show that there is a legitimate reason for concern regarding certain trace elements in some of the bottled water marks. To assess the quality of water types by comparison with national and international drinking water standards (MS, WHO). Naturally gaseous mineral waters (WMG, WMGL) are the richest in trace elements. The concentration of the respective arsenic in two samples (WMGand WMGF) exceeds the WHO acceptable limit standards. The human health risk assessment was carried out by the determination of average daily dose (ADD), the As Hazard Quotient (HQ) by human oral consumption for adults and children. Arsenic HQ in WMG and WMGL waters were all superior to the unit and therefore pose a potential health risk especially to children. Trace metal concentrations in most bottled waters are below the currently recommended levels considered harmful to human health. The few exceptions that exist, however, clearly show that health problems are likely to manifest through the prolonged use of these waters. |
