Bong Yeon-Sik, Ryu Jong-Sik, Lee Kwang-Sik
Division of Earth & Environmental Sciences, Korea Basic Science Institute, 113 Gwahangno, Yusung-gu, Daejeon 305-333, Republic of Korea.
Anal Chim Acta. 2009 Jan 12;631(2):189-95. doi: 10.1016/j.aca.2008.10.032. Epub 2008 Nov 1.
We analyzed the major elements and stable isotopes of oxygen, hydrogen, and carbon (dissolved inorganic carbon: DIC) in various types of bottled water (domestic and foreign) commercially available in South Korea to classify the water types and to identify their origins. Only marine waters and some sparkling waters could be discriminated by their physicochemical compositions. Oxygen and hydrogen isotopes made marine waters more distinguishable from other water types. The determination of the carbon isotope composition of DIC was clearly useful for distinguishing between naturally and artificially sparkling waters. In addition, statistical analysis also appeared to aid in the discrimination of bottled water types. Our results indicate that a method that combines chemical and stable isotope composition analysis with statistical analysis is the most useful for discriminating water types and characterizing the origins of bottled water.
我们分析了韩国市场上各类市售瓶装水（国内外）中氧、氢和碳的主要元素以及稳定同位素（溶解无机碳：DIC），以对水的类型进行分类并确定其来源。只有海水和一些气泡水能够通过其物理化学组成加以区分。氧和氢同位素使海水与其他水类型更易于区分。DIC碳同位素组成的测定对于区分天然气泡水和人工气泡水显然很有用。此外，统计分析似乎也有助于区分瓶装水的类型。我们的结果表明，将化学和稳定同位素组成分析与统计分析相结合的方法对于区分水的类型和确定瓶装水的来源最为有用。
