Stable isotopic analysis and groundwater flow simulation as potential tools for estimating groundwater sources used for food materials
2010
Tomiyama, S., Wakayama Univ. (Japan) | Ii, H. | Uehara, T. | Wakita, T.
Understanding the source and chemical characteristics of groundwater provides important strategies for quality management of mineral water and food materials. To identify the source of groundwater used for food materials, water quality and stable isotopes of hydrogen and oxygen were examined in well water from Mizuho City, Japan. The well water samples had similar chemical characteristics to river water around the study area. The hydrogen and oxygen isotopic ratios of the well water samples indicated that their origin was solely meteoric and that the groundwater mainly originated from upstream of the Neo River (and other rivers) around the study area. The subsequent groundwater simulation produced down streamlines from the upper stream areas of the Neo River and around the study area, which corresponded well with the groundwater flow estimated from deltaD and deltasup(18)O values of the samples. Thus, the stable isotope analysis and groundwater flow simulation appear to be useful tools for tracing the origin of groundwater used for food materials.
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