World Health Organization water guidelines

World Health Organization (2006) Guidelines for the safe use of the wastewater, excreta and grey water vol. 2 Wastewater use in agriculture. WHO, Geneva, Switzerland... 

WHO (World Health Organization) (2003) Guidelines for safe recreational water environments, vol 1 Coastal and freshwaters. WHO, Geneva... 

World Health Organization (1984). Guidelines for Drinking Water Quality. Vol. 1. WHO, Geneva p. 130. 

Some refractory elements cannot be determined by ET-AAS at the levels usually present in waters. That is the case with M. El Himri et al. [28] developed a fast and accurate procedure, without any prior treatment, to analyze tap and mineral waters from Spain and Morocco for this highly toxic element. ICP-MS was employed. The analytical isotope selected was 238U, with Rh as internal standard. An LoD of 2ngl 1 was obtained. The estimated repeatability was 3 percent at the concentration level of 73 ng l-1. The method was validated by comparison with a radiochemical procedure devised for natural samples and by analysis of a Certified Reference Material (CRM). Multi-element capabilities of ICP-AES have also been employed for surveys of trace elements. Al-Saleh and Al-Doush [29] reported the concentrations of dissolved Be, Cd, Cr, Cu, Fe, Mg, Mn, Hg, Ni, Se, Sr, V, and Zn in 21 samples of retail bottled waters from Riyadh, Saudi Arabia. It was found that Cd, Fe, Hg, Ni, and Zn were present at concentrations higher than the limits recommended by the EU and World Health Organization (WHO) guidelines. 

World Health Organization. (2004). Guidelines for drinking water quality. (3rd ed.). Geneva, Switzerland IWA. 

WHO (World Health Organization, 2006), Guidelines for drinking-water quality incorporating first addendum. Vol. 1, Recommendations, 3rd Edn (Electronic version for the Web) [freely available at http //www.who.int/water sanitation health/dwq/gdwq3rev/en/index.html]. 

World Health Organization, 1993. Guidelines for Drinking Water QuaUty. 2nd Ed. Vol. 1 Recommendations. World Health Organization, Geneva, Switzerland. 

De Zuane, J. 1997. Handbook of Drinking Water Quality, 2nd ed. New York Van Nostrand Reinhold. Describes U.S. and WHO (World Health Organization) water quality guidelines. 

WHO (2004) Dialkyltins in drinking water. Background document for the development of WHO Guidelines for drinking-water quality. Geneva, World Health Organization (WHO/SDEA/VSH/ 03.04/109 http //vwvw.vvho.int/water sanitation health/dwq/ chemicals/dialkyltins.pdf). 

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