Aeolian-dust-derived micaceous minerals control radiocesium retention in Andosols in Japan

Atsushi Nakao, Aya Nakao, Ryoji Tanaka, Sho Ogasawara, Junta Yanai

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Factors controlling the abilities of Allophanic Andosols (representative of Japanese volcanic ash soils) to retain radiocesium (RCs) were assessed. The hypothesis was that retention is largely controlled by traces of micaceous minerals deposited as components of aeolian dust. The radiocesium interception potentials (RIPs), mica K contents were determined in the 2- to 20- and 180) in the quartz isolated from each 2- to 20-μm particle fraction was determined to identify the origin of the quartz in each soil sample. The mean RIP for the 2- to 20- and -1, respectively, and the mica K contents were 3.2 ± 1.3 and 3.4 ± 1.7 g kg-1, respectively, corresponding to micaceous mineral contents of 0.01), indicating that the abilities of the soils to retain RCs were mainly controlled by the micaceous mineral contents. The mica K content was proportional to the quartz content in the 180 in the quartz was + 14.8%, similar to those in fine quartz in Chinese loess. These results strongly indicate that the abilities of Allophanic Andosols to retain RCs are largely controlled by micaceous minerals probably originating in aeolian dust.

Original languageEnglish
Pages (from-to)1590-1600
Number of pages11
JournalSoil Science Society of America Journal
Volume79
Issue number6
DOIs
Publication statusPublished - Nov 1 2015

Fingerprint

Andosol
eolian deposit
quartz
dust
mica
Japan
minerals
mineral
interception
mineral content
volcanic ash soils
soil
volcanic ash
loess
trace elements
soil sampling
Andosols

Keywords

  • Abbreviations: FES
  • Frayed edge site
  • Oxalate extractable
  • Radiocesium
  • Radiocesium interception potential
  • RCs
  • RIP
  • Vienna standard mean ocean water
  • VSMOW
  • X-ray diffraction
  • XRD
  • [subscript] ox
  • [subscript] py pyrophosphate extractable

ASJC Scopus subject areas

  • Soil Science

Cite this

Aeolian-dust-derived micaceous minerals control radiocesium retention in Andosols in Japan. / Nakao, Atsushi; Nakao, Aya; Tanaka, Ryoji; Ogasawara, Sho; Yanai, Junta.

In: Soil Science Society of America Journal, Vol. 79, No. 6, 01.11.2015, p. 1590-1600.

Research output: Contribution to journalArticle

Nakao, Atsushi ; Nakao, Aya ; Tanaka, Ryoji ; Ogasawara, Sho ; Yanai, Junta. / Aeolian-dust-derived micaceous minerals control radiocesium retention in Andosols in Japan. In: Soil Science Society of America Journal. 2015 ; Vol. 79, No. 6. pp. 1590-1600.
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abstract = "Factors controlling the abilities of Allophanic Andosols (representative of Japanese volcanic ash soils) to retain radiocesium (RCs) were assessed. The hypothesis was that retention is largely controlled by traces of micaceous minerals deposited as components of aeolian dust. The radiocesium interception potentials (RIPs), mica K contents were determined in the 2- to 20- and 180) in the quartz isolated from each 2- to 20-μm particle fraction was determined to identify the origin of the quartz in each soil sample. The mean RIP for the 2- to 20- and -1, respectively, and the mica K contents were 3.2 ± 1.3 and 3.4 ± 1.7 g kg-1, respectively, corresponding to micaceous mineral contents of 0.01), indicating that the abilities of the soils to retain RCs were mainly controlled by the micaceous mineral contents. The mica K content was proportional to the quartz content in the 180 in the quartz was + 14.8{\%}, similar to those in fine quartz in Chinese loess. These results strongly indicate that the abilities of Allophanic Andosols to retain RCs are largely controlled by micaceous minerals probably originating in aeolian dust.",
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