Radioactivity concentrations in soils of the Xiazhuang granite area, China

Yang, Yuanheng; Wu, Xiaoyan; 江, 鐘偉; Wang, Weixing; Lu, Ji-gen; Lin, Jun; Wang, Lei‐Ming; Hsia, Yuanfu

doi:10.1016/j.apradiso.2005.02.011

Cited by 185 publications

(63 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the mean and the range of concentration of all the three radionuclides in the soils of the Bangalore region compares well with that observed in Spain (Baeza et al 1992). The mean values of 232 Th and 40 K concentrations observed in the present study also compare well with those of China (Yang et al 2005), but they are very Th, and much less than that reported for Turkey (Merdanoglu and Altinsoy 2006). The 226 Ra concentration reported for these two regions is almost four times higher than that observed in the present study.…”

supporting

confidence: 76%

CONCENTRATIONS OF 226Ra, 232Th, AND 40K IN THE SOILS OF BANGALORE REGION, INDIA

Prasad¹,

Nagaiah²,

Ashok³

et al. 2008

Health Physics

View full text Add to dashboard Cite

show abstract

supporting

confidence: 76%

CONCENTRATIONS OF 226Ra, 232Th, AND 40K IN THE SOILS OF BANGALORE REGION, INDIA

Prasad¹,

Nagaiah²,

Ashok³

et al. 2008

Health Physics

View full text Add to dashboard Cite

show abstract

“…In areas with normal background radiation, the average annual external effective dose rate from the terrestrial radionuclides is (0.46 mSv y -1 ) (UNSCEAR 1993) (Yang 2005). The main contributions to radium equivalent activity and external hazard index are 232 Th and 226 Ra for fly ash and bottom ash, and hence when these are used as additives in building materials, the concentration of natural radionuclides should be monitored.…”

Section: Effective Dose Rate (Msv Ymentioning

confidence: 99%

Natural radionuclides from coal fired thermal power plants – estimation of atmospheric release and inhalation risk

2011

View full text Add to dashboard Cite

Abstract. Coal, bottom ash and fly ash samples were collected from three different coal-fired thermal power plants in India and subjected to gamma spectrometry analysis for natural radioactivity contents. The results of present study show that fly ash and bottom ash contains two to five times more natural radionuclides than feed coal. None of the fly-ash and bottom ash samples had radium equivalent activities and external hazard index values more than 370 Bq kg -1 and unity respectively. However the absorbed dose rate at 1 m above the ash pond was 79.19n Gy h -1 (average of 3 plants) higher than the global average value of 55 nGy h -1 . The corresponding annual external effective dose is estimated to be 0.68 mSv y -1 , which is also more than that (0.46 mSv y -1 ) in areas of natural background radiation. The 5th percentile, 95th percentile and mean values for total inhalation risk arising from radionuclides (Ra 226 , Th 228 , Pb 210 and Nat-U) were found to be 3.83 × 10 −9 , 6.50 × 10 −8 and 2.08 × 10 −8 respectively.

show abstract

“…The average AEDE value was calculated as 69.8 μSv/y in Istanbul (Turkey) [9], 152 μSv/y in the Xiazhuang Granite Area China) [21], 314.1 μSv/y in the Southeast part of Eskisehir (Turkey) [15], and). These average values are generally higher than the present value.…”

Section: Annual Effective Dose Equivalent (Aede)mentioning

confidence: 99%