Radioactivity, Geochemistry, and Health

Siegel, Morris; Bryan, Charles R.

doi:10.1016/b978-0-08-095975-7.00906-2

Cited by 8 publications

(4 citation statements)

References 450 publications

(558 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The water-soluble fraction of Sr was higher than that of other trace metals except Mn in all soils. Although Sr can be released from the weathering of sulfate minerals and ion-exchange reactions with clay minerals (Siegel and Bryan 2014 ), aeolian dust input can be a major Sr source in arid regions (Coble et al 2015 ). The Mo content in the control soil was less than the EILs (40 mg/kg) but nearly 10 times higher than the EILs in the PHC-contaminated soils.…”

Section: Resultsmentioning

confidence: 99%

Residual hydrocarbons in long-term contaminated soils: implications to risk-based management

Bahar,

Samarasinghe,

Bekele

et al. 2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

Petroleum hydrocarbon (PHC) contamination is a widespread and severe environmental issue affecting many countries’ resource sectors. PHCs are mixtures of hydrocarbon compounds with varying molar masses that naturally attenuate at different rates. Lighter fractions attenuate first, followed by medium-molar-mass constituents, while larger molecules remain for longer periods. This results in significant regulatory challenges concerning residual hydrocarbons in long-term contaminated soils. This study examined the potential risks associated with residual PHC and its implications for risk-based management of heavily contaminated soils (23,000–26,000 mg PHC/kg). Ecotoxicological properties, such as seedling emergence and growth of two native plant species—small Flinders grass (Iseilema membranaceum) and ruby saltbush (Enchylaena tomentosa)—and earthworm survival tests in PHC-contaminated soils, were assessed. Additionally, the effects of aging on the attenuation of PHC in contaminated soils were evaluated. Toxicity responses of plant growth parameters were determined as no-observed-effect concentrations: 75%–100% for seedling emergence, < 25%–75% for plant shoot height, and 75%–100% for earthworm survival. After 42 weeks of aging, the total PHC levels in weathered soils decreased by 14% to 30% and by 67% in diesel-spiked soil due to natural attenuation. Dehydrogenase enzyme activity in soils increased during the initial aging period. Furthermore, a clear shift of bacterial communities was observed in the soils following aging, including enrichment of PHC-resistant and -utilizing bacteria—for example, Nocardia sp. This study underscores the potential of natural attenuation for eco-friendly and cost-effective soil management, underlining that its success depends on site-specific factors like water content and nutrient availability. Therefore, we recommend detailed soil assessments to evaluate these conditions prior to adopting a risk-based management approach.

show abstract

Section: Resultsmentioning

confidence: 99%

Residual hydrocarbons in long-term contaminated soils: implications to risk-based management

Bahar,

Samarasinghe,

Bekele

et al. 2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

“…Going on, the content of 226 Ra in aquifers is not only related to the abundance of its parent radionuclides [ 22 ], but also it is controlled by sorption, desorption, and ion exchange processes [ 23 ]. In particular, factors related to geology and climate that affect the acidity, redox potential, degree of mineralization, and composition of groundwater, as well as their potential residence time, can also affect sorption and, thereby, the distribution pattern of Ra-isotopes [ 23 ]. Moreover, it is worth noting is that the investigated area falls within the Aspromonte Massifs, a geological segment of the Calabrian Arc, which consists of a series of Palaeozoic plutonic–metamorphic nappes, locally overlain by a Mesozoic–Cenozoic sedimentary cover.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the Radiological Health Risk Due to the 226Ra Content in Drinking Water from the Calabria Region, Southern Italy

Caridi

Paladini

Spoto

et al. 2022

IJERPH

View full text Add to dashboard Cite

In this article, the authors report experimental results obtained for the assessment of the 226Ra content in 80 drinking water samples from the Calabria region, Southern Italy. The activity concentration, measured with the Perkin Elmer Tricarb 4910 TR Liquid Scintillation Counter (LSC) setup, was compared with the reference values reported in the Italian Legislative Decree 28/2016 in order to evaluate any possible radiological health hazards for the population in terms of 226Ra content due to the ingestion of the investigated drinking water. The obtained results put in evidence that the average 226Ra specific activity is lower than the LSC minimum detectable activity (MDA) in all cases, thus, excluding any radiological risk. They also represent the main reference for the investigated area and can be used as a baseline to extend this investigation to the whole region.

show abstract

“…Inherently, coals, coal combustion residuals (CCRs), and soils commonly possess naturally occurring radioactive materials (NORMs) including Th and U actinide series and their progenies, along with other radionuclide, e.g., 40 K (Habib et al 2019a, b;Chen et al 2011Chen et al , 2017aOrem and Finkelman 2014;Arbuzov et al 2011) (Table 24.14). The degree of gamma radiation is directly related to the radioactivity concentrations of NORMs (Siegel and Bryan 2014). Considering the abundances of NORMs ( 226 Ra, 232 Th, 238 U, and 40 K), the evaluation of radiological risks owing to the environmental radioactivity is more important compared to merely studying the hazardous radioactive wastes (Dragović et al 2008(Dragović et al , 2013Vuković et al 1996).…”

Section: Radionuclidesmentioning

confidence: 99%

Environmental Impacts of Coal-Mining and Coal-Fired Power-Plant Activities in a Developing Country with Global Context

Habib¹,

Khan

2021

Environmental Challenges and Solutions

View full text Add to dashboard Cite

To represent a comprehensive scenario regarding the coal mining and coal-fired power plant activities in a developing country (Bangladesh) and to understand the total environmental impacts, potential coal resources of Bangladesh, environmental geochemistry and dispersion of pollutants, eco-toxicological impacts, human health risks as well as socioeconomic impacts are evaluated in this chapter. Potential coal reserves along with the future plants are estimated. Technogenic sources of environmental pollutants including environmentally toxic heavy metals, health hazardous radionuclides, persistent organic pollutants, suspended particulate maters, etc. are assessed. In doing so, scarce associated data from coal mine (Barapukuria, Bangladesh) and Barapukuria coal-fired power plant (BTPP) of Bangladesh have been reconciled by using and arguing the previous works around the globe. Immense and proper literature reviews as well as the existing data on Barapukuria coal mine and BTPP are tabulated to compare and understand the condition along with the potential prevention and remediation approaches.

show abstract

Radioactivity, Geochemistry, and Health

Cited by 8 publications

References 450 publications

Residual hydrocarbons in long-term contaminated soils: implications to risk-based management

Residual hydrocarbons in long-term contaminated soils: implications to risk-based management

Assessment of the Radiological Health Risk Due to the 226Ra Content in Drinking Water from the Calabria Region, Southern Italy

Environmental Impacts of Coal-Mining and Coal-Fired Power-Plant Activities in a Developing Country with Global Context

Contact Info

Product

Resources

About