Browsing by Author "Pelpitiya, I.P.S.K."

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    Geochemical Influence on Sri Lankan Bottle water
    (Uva Wellassa University of Sri Lanka, 2012) Pelpitiya, I.P.S.K.
    The purpose of this study was to analyze the chemical composition of bottle water and compare it with the permissible limits given in SLS 894:2003 and identify the geochemical influence according to the bottle water composition. Therefore laboratory investigations were carried out to analyze the chemical composition of bottle water and ground water samples that are collected from various places of the country and compare it with the standards. From the Laboratory investigations of the 19 chemical components included in the bottle water samples and ground water samples; few chemical components such as pH, Nitrite, Residual Chlorine, Fluorine, Ammonia and Total Hardness of some samples are shown deviated values from the permissible level given by the SLS 894:2003 for mineral water. And compare to the bottle water samples, in ground water samples some chemical component such as Total Dissolved Solids, Conductivity, Iron, Chlorine, Ammonia, Calcium and Chlorine are exposed higher concentration values. According cation and anion analyze of the bottle water samples and ground water samples Mg-HCO3 water type is the generally abundant water and Mg-C1 water type is found lesser amount. And the water flows though the underground was contained different types of minerals and ions. These minerals were dissolved, precipitate or in equilibrium with the water. With the analysis of visual MINTEQ software it was identified nine minerals were at the over saturation state for all the water samples and K-Jarosite mineral was at the over saturation state for some ground water samples collected from Colombo and Badulla districts. Except that, all the other 60 minerals were in under saturation state in water samples that was analyzed. And there was no any mineral at the apparent equilibrium state with the collected bottle or ground water samples.
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    Geochemical Influences on Sri Lankan Bottled Water
    (Uva Wellassa University of Sri Lanka, 2012) Pelpitiya, I.P.S.K.; Udagedara, D.T.; Attanayake, A.N.B.
    Sri Lanka is one of the renowned countries to have abundant sources of clean natural water resources. There are numerous discovered or undiscovered natural water bodies that contain clean water which can be used as drinking water without any treatment. They can be categorized according to the origin as artesian water, spring water, well water, prepared water or surface water. However, currently Sri Lanka is experiencing an unprecedented development which does not assure clean natural water anymore. At this scenario, bottled water plays a major role as a source of clean drinking water. Bottled water, which is used for human consumption may contain minerals and carbon dioxide, naturally occurring or intentionally added; but shall not contain added sugars, sweeteners, flavorings or other foods that are packaged in plastic or glass bottles and sizes range from small PET bottles to large gallons. There are number of bottled water brands which contain treated or untreated spring water, well water, or river water which are bottled and distributed in various districts. This bottled water may contain different chemical components according to their natural source, different treatment methods or with the requirements. A research on investigating the chemical composition and its relationship with the bed rock geochemistry of the source area has not been conducted in Sri Lanka. Thus, this research aims at assessing the geochemical conditions of Sri Lanka's bottle water sources by analyzing samples collected from different areas of the country. Where the sources of bottled water are dug wells, springs or tube wells they can easily be used for the groundwater monitoring purposes. It is attempted to recognize the real quality of the bottled water and to evaluate the quality compliance with the standards. In Sri Lanka there are two specific standards given for the bottle water by the Sri Lankan Standards Institution. Those are SLS 1038:2003 and SLS 894:2003 which define the requirements for high quality bottled water product.