Spatial distributions of 137Cs in surface soil in Jing-Jin-Ji Region, North China

Zhao, Ye; Yan, Dong; Zhang, Qing; Zhan, Jinyan; Hu, Hongxia

doi:10.1016/j.jenvrad.2012.04.005

Cited by 17 publications

(6 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentrations of 137 Cs in the Qatari soil samples vary from 0.030 to 1.210 fg/g (0.098e3.993 Bq/kg) with a mean value of 0.619 fg/g (2.038 Bq/kg) and a median value of 0.620 fg/g (2.051 Bq/kg). These concentrations of 137 Cs in Qatari topsoil are comparable to the values of 3.89 (0.17e9.79) Bq/kg, 4.6 (1.4e6.9) Bq/kg, and <0.12e1.4 Bq/kg measured for the 137 Cs levels in soil and marine sediments collected from Saudi Arabia (AlKheliewi et al, 2008;Al-Kheliewi and Shabana, 2007), China (Lu et al, 2006;Zhao et al, 2012), and Continent Antarctica (Desideri et al, 2003), respectively, as shown in Table 7. On the other hand, these values are rather lower than the values of 4933 (500e8011) Bq/kg, 7.5e576 Bq/kg, 0.81e17.9 Bq/kg, and 59.7 (15e119) Bq/kg measured for the 137 Cs levels in soil and marine sediments collected from Syria (Al-Rayyes and Mamish, 1999), Jordan (Al-Hamarneh et al, 2003), Japan (Maxwell et al, 2013), and Lebanon (El Samad et al, 2007), respectively.…”

Section: Measurements Of 137 Cs By Crc-icp-ms/ms (Msems Mode)supporting

confidence: 79%

Ultra-trace determination of 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu by triple quadruple collision/reaction cell-ICP-MS/MS: Establishing a baseline for global fallout in Qatar soil and sediments

Amr

Helal

Al-Kinani

et al. 2016

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

Section: Measurements Of 137 Cs By Crc-icp-ms/ms (Msems Mode)supporting

confidence: 79%

Ultra-trace determination of 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu by triple quadruple collision/reaction cell-ICP-MS/MS: Establishing a baseline for global fallout in Qatar soil and sediments

Amr

Helal

Al-Kinani

et al. 2016

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

“…Numerous studies following the Chernobyl accident have shown that soil is the main reservoir for radiocesium [1][2][3] and its spatial distribution in soil has been widely investigated. [4][5][6] It has been recognized that 137 Cs was mostly deposited in the surface soil layer (0-15 cm) [7][8][9] and that its concentration decreases slightly with depth. [10][11][12][13] The physicochemical characteristics of soil and other environmental conditions inuence the migratory behavior of cesium in soil.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution and vertical migration of 137Cs in soils of Belgrade (Serbia) 25 years after the Chernobyl accident

Petrović

Ćujić

Đorđević

et al. 2013

Environ. Sci.: Processes Impacts

View full text Add to dashboard Cite

In this study, the specific activity of (137)Cs was determined by gamma-ray spectrometry in 72 surface soil samples and 11 soil profiles collected from the territory of Belgrade 25 years after the Chernobyl accident. Based on the data obtained the external effective gamma dose rates due to (137)Cs were assessed and geographically mapped. The influence of pedogenic factors (pH, specific electrical conductivity, cation exchange capacity, organic matter content, soil particle size and carbonate content) on the spatial and vertical distribution of (137)Cs in soil was estimated through Pearson correlations. The specific activity of (137)Cs in surface soil samples ranged from 1.00 to 180 Bq kg(-1), with a mean value of 29.9 Bq kg(-1), while in soil profiles they ranged from 0.90 to 58.0 Bq kg(-1), with a mean value of 15.3 Bq kg(-1). The mean external effective gamma dose at 1 m above the ground due to (137)Cs in the soil was calculated to be 1.96 nSv h(-1). Geographic mapping of the external effective gamma dose rates originating from (137)Cs revealed much higher dose rates in southern parts of Belgrade city and around the confluence of the Sava and Danube. Negative Pearson correlation coefficients were found between pH, cation exchange capacity and (137)Cs specific activity in surface soil. There were positive correlations between organic matter and (137)Cs specific activity in surface soil; and between specific electrical conductivity, organic matter, silt content and (137)Cs specific activity in soil profiles.

show abstract

“…In a broader perspective, colloid transport has also been found to facilitate the transport of heavy metals and polycyclic aromatic hydrocarbons (Paradelo et al, 2013; Bergendahl, 2005), and the greatest and most recent challenge to soil and groundwater environmental quality is the high dose of radioactive fallout of cesium ( 137 Cs) from the Fukushima Daiichi nuclear power plant in March 2011. Cesium is strongly and rapidly adsorbed to soil mineral particles (Tsukada et al, 2008; Tsushima et al, 2013; Zhao et al, 2012; Cremers et al, 1988), and Cheng and Saiers (2010) have demonstrated that the effect of colloids on 137 Cs mobility can be substantial when high concentrations of colloids are mobilized during transient flow in the vadose zone. Thus, colloid‐facilitated transport of chemicals can have an adverse impact on the environment.…”

mentioning

confidence: 99%

Field-scale Variation in Colloid Dispersibility and Transport: Multiple Linear Regressions to Soil Physico-Chemical and Structural Properties

et al. 2014

View full text Add to dashboard Cite

Water-dispersible soil colloids (WDC) act as carriers for sorbing chemicals in macroporous soils and hence constitute a significant risk for the aquatic environment. The prediction of WDC readily available for facilitated chemical transport is an unsolved challenge. This study identifies key parameters and predictive indicators for assessing field-scale variation of WDC. Samples representing three measurement scales (1- to 2-mm aggregates, intact 100-cm rings, and intact 6283 cm columns) were retrieved from the topsoil of a 1.69-ha agricultural field in a 15-m by 15-m grid to determine colloid dispersibility, mobilization, and transport. The amount of WDC was determined using (i) a laser diffraction method on 1- to 2-mm aggregates and (ii) an end-over-end shaking method on 100-cm intact rings. The accumulated amount of colloids leached from 20-cm by 20-cm intact columns was determined as a measure of the integrated colloid mobilization and transport. The WDC and the accumulated colloid transport were higher in samples from the northern part of the field. Using multiple linear regression (MLR) analyses, WDC or amount of colloids transported were predicted at the three measurement scales from 24 measured, geo-referenced parameters to identify parameters that could serve as indicator parameters for screening for colloid dispersibility, mobilization, and transport. The MLR analyses were performed at each sample scale using all, only northern, and only southern field locations. Generally, the predictive power of the regression models was best on the smallest 1- to 2-mm aggregate scale. Overall, our results suggest that different drivers controlled colloid dispersibility and transport at the three measurement scales and in the two subareas of the field.

show abstract

Spatial distributions of 137Cs in surface soil in Jing-Jin-Ji Region, North China

Cited by 17 publications

References 41 publications

Ultra-trace determination of 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu by triple quadruple collision/reaction cell-ICP-MS/MS: Establishing a baseline for global fallout in Qatar soil and sediments

Ultra-trace determination of 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu by triple quadruple collision/reaction cell-ICP-MS/MS: Establishing a baseline for global fallout in Qatar soil and sediments

Spatial distribution and vertical migration of 137Cs in soils of Belgrade (Serbia) 25 years after the Chernobyl accident

Field-scale Variation in Colloid Dispersibility and Transport: Multiple Linear Regressions to Soil Physico-Chemical and Structural Properties

Contact Info

Product

Resources

About