Environmental radioactivity of water samples collected in Higashi-Hiroshima campus, Hiroshima University, Japan.
The relation between concentration of elements and microbial activity in the water samples of Higashi-Hiroshima Campus, Hiroshima University was investigated. Energy dispersive X-ray spectroscopy revealed that microbial mat contains iron, aluminium, silicon and phosphorus. Model experiment revealed that the potassium was adsorbed by living microorganism in the microbial mats, while it was not adsorbed by dead microbial mat. Iron was adsorbed by both living and dead microbial mats. The present results explain the increase in the total β-radioactivity of water sample in summer and the decrease in winter.
Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima, Japan snaka@hiroshima-u.ac.jp.
S
S
Nakashima
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan.
A
A
Sasai
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan.
K
K
Koga
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan.
H
H
Yasuhara
Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima, Japan.
A
A
Matsushima
Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima, Japan.
K
K
Inada
D006801:Humans; D007564:Japan; D061005:Ponds / Q000737:chemistry*; D011829:Radiation Dosage; D000069079:Radiation Exposure / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods*; D011868:Radioisotopes / Q000032:analysis*; D045483:Rivers / Q000737:chemistry*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
D011868:Radioisotopes; D014875:Water Pollutants, Radioactive