Determination of Heavy toxic metals (Pb, Cr, Co, Cu, Zn, Fe and Cd) and Total Dissolved Solids in Bottled Drinking Water

Abstract

This study was achieved to verify the quality of drinking water which was packed in bottles from different companies and used as basic source of drinking water in Tobruk city, Libya. The studied water samples were randomly collected from different shops and supermarkets. The contaminated toxic elements and heavy metals in water were assessed and analyzed using Flame Atomic Absorption Spectroscopy (Flame AAS) instrument, in same time, the total dissolved solids (TDS) were also detected by. The obtained results showed the appearance and contaminated of the most tested samples by toxic heavy elements vis: Pb, Cr, Co, Cu, Zn, Fe and Cd. Additionally, the results were showed that most of samples suffer from losing total dissolved solids which are important to human health. According to the above results, the study concluded that the most samples of water had greater levels of toxic heavy metals and lower content of total dissolved solids than the standard values mentioned by World Health Organization (WHO) and Libyan Health Organization (LHO). Therefore, study recommended that the decision makers in Tobruk city should be taken more care about bottled drinking water concerning with monitoring, checking and comparing with the standard level of Libyan Health Organization.