Boron determination in a multi element national water monitoring program: the absence of legal limits |
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Authors: | Eleni Loizou Popi Nicolaidou Kanari Georgia Kyriacou and Maria Aletrari |
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Affiliation: | (1) State General Laboratory, Ministry of Health, General Water Analysis Lab, 44 Kimonos Str., 1451 Nicosia, Cyprus; |
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Abstract: | Directive 98/83/EC concerning the drinking water quality and Directive 80/777/EC for Natural Mineral Water demand strict control
and monitoring for the presence of metals. The State General Laboratory as the official control laboratory (Accredited by
ISO 17025:2005) implements a national monitoring program in order to ensure that the drinking and natural mineral water quality
satisfy the requirements of the respective Directives. The National Monitoring program covers mainly metals such as Pb, Cd,
Cr, Ni, As, Se, Sb, Hg, Mn, Cu, Fe, Al and B in water supplied for human consumption either by distribution networks, vending
machines, mobile water containers, ground water intended for human consumption as well as bottled water. The determination
of metals in water by Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS) is a technique that successfully meets the requirements
of the above Directives as it is a very powerful tool for the measurement of metals at very low concentrations with high accuracy
and precision. The results obtained indicate that metal concentrations in drinking and bottled water examined were by far,
below the acceptable legal limits and even below the relevant detection limits. However, in samples of bottled natural mineral
water, high boron concentration were determined and risk assessment was performed due to the absence of relevant legal limits.
The present paper demonstrates the steps undertaken by the General Water Analysis Laboratory of the SGL for the validated
method used by ICP-MS in the determination of trace metals including boron in drinking and bottled water. |
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