Table 1 Radioactivity of four CsMPs described in the present study.

From: Isotopic signature and nano-texture of cesium-rich micro-particles: Release of uranium and fission products from the Fukushima Daiichi Nuclear Power Plant

Sample

Particle size (μm)

Radioactivity of 134Cs (Bq)

Radioactivity of 137Cs (Bq)

Ratio of 134Cs/137Cs radioactivity

OTZ3

<17.3

401(±3.7)

379(±1.5)

1.06

OTZ10

2.2

1.85(±0.080)

1.94(±0.031)

0.955

OMR1

<5.2

21.5(±0.50)

20.3(±0.19)

1.06

KOI2

<4.4

18.2(±0.16)

16.8(±0.05)

1.08

  1. The radioactivity was decay-corrected to March 12, 2011, 15:36 JST. The uncertainties in the radioactivity analyses are given in the parenthesis. The particle size was measured using the SEM image.
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