3. Application of PIXE in Environmental ScienceNo Access

APPLICATION OF MICRO-PIXE IN ATMOSPHERIC ENVIRONMENTAL SCIENCE RESEARCH: ELEMENTAL MAP OF LEAVES

KATSUMI SAITOH

Environmental Research & Information Center of Akita Prefecture (ERICA), 3-1-1 Sanno, Akita 010-8572, Japan

author for correspondence, fax: +81-18-863-1076.

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HITOSHI IMASEKI

National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku Chiba 263-8555, Japan

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MASAE YUKAWA

National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku Chiba 263-8555, Japan

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, and

OSAMU NAGAFUCHI

Fukuoka Institute of Health and Environmental Sciences, 39 Mukaizano, Dazaifu, Fukuoka 818-0135, Japan

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https://doi.org/10.1142/S0129083502000354Cited by:4 (Source: Crossref)

Abstract

Micro-beam scanning PIXE and scanning transmission ion microscopy (STIM) were applied to measurement of Siebold's beech (Fagus crenata Blume) leaves. The beech leaf samples were collected from selected beech trees at Tsugaru Pass near the Shirakami-Sanchi World Heritage Area, in the 1999 growing season. We focused our interest on the influence of the atmospheric environment (acidic deposition, aerosol and gaseous substances, etc.) on the forest ecosystem. Our approach to real images of the deposition of airborne particulate on leaves led to the elucidation of the process of elemental absorption from air and plant metabolism. As a result, it is suggested that 1) overlapping STIM images and elemental maps demonstrate the patterns of the elemental absorption into plants, 2) comparison of the elemental maps of leaves taken at the different growth stages may provide useful clues to the elemental accumulation mechanism in leaves, and 3) silicon distribution in leaves is indicative of airborne particulate deposition on them.

Keywords:

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