Publication date: January 2018
Source:Journal of Environmental Radioactivity, Volume 181
Author(s): Antonio Ferreira, Zornitza Daraktchieva, David Beamish, Charles Kirkwood, T. Robert Lister, Mark Cave, Joanna Wragg, Kathryn Lee
Predictive mapping of indoor radon potential often requires the use of additional datasets. A range of geological, geochemical and geophysical data may be considered, either individually or in combination.The present work is an evaluation of how much of the indoor radon variation in south west England can be explained by four different datasets: a) the geology (G), b) the airborne gamma-ray spectroscopy (AGR), c) the geochemistry of topsoil (TSG) and d) the geochemistry of stream sediments (SSG). The study area was chosen since it provides a large (197,464) indoor radon dataset in association with the above information.Geology provides information on the distribution of the materials that may contribute to radon release while the latter three items provide more direct observations on the distributions of the radionuclide elements uranium (U), thorium (Th) and potassium (K). In addition, (c) and (d) provide multi-element assessments of geochemistry which are also included in this study.The effectiveness of datasets for predicting the existing indoor radon data is assessed through the level (the higher the better) of explained variation (% of variance or ANOVA) obtained from the tested models. A multiple linear regression using a compositional data (CODA) approach is carried out to obtain the required measure of determination for each analysis.Results show that, amongst the four tested datasets, the soil geochemistry (TSG, i.e. including all the available 41 elements, 10 major – Al, Ca, Fe, K, Mg, Mn, Na, P, Si, Ti - plus 31 trace) provides the highest explained variation of indoor radon (about 40%); more than double the value provided by U alone (ca. 15%), or the sub composition U, Th, K (ca. 16%) from the same TSG data. The remaining three datasets provide values ranging from about 27% to 32.5%. The enhanced prediction of the AGR model relative to the U, Th, K in soils suggests that the AGR signal captures more than just the U, Th and K content in the soil.The best result is obtained by including the soil geochemistry with geology and AGR (TSG + G + AGR, ca. 47%). However, adding G and AGR to the TSG model only slightly improves the prediction (ca. +7%), suggesting that the geochemistry of soils already contain most of the information given by geology and airborne datasets together, at least with regard to the explanation of indoor radon.From the present analysis performed in the SW of England, it may be concluded that each one of the four datasets is likely to be useful for radon mapping purposes, whether alone or in combination with others. The present work also suggest that the complete soil geochemistry dataset (TSG) is more effective for indoor radon modelling than using just the U (+Th, K) concentration in soil.
from #MedicinebyAlexandrosSfakianakis via xlomafota13 on Inoreader http://ift.tt/2zJUBrJ
via IFTTT
Αρχειοθήκη ιστολογίου
-
►
2020
(289)
- ► Φεβρουαρίου (28)
-
►
2019
(9071)
- ► Δεκεμβρίου (19)
- ► Σεπτεμβρίου (54)
- ► Φεβρουαρίου (3642)
- ► Ιανουαρίου (3200)
-
►
2018
(39872)
- ► Δεκεμβρίου (3318)
- ► Σεπτεμβρίου (3683)
- ► Φεβρουαρίου (2693)
- ► Ιανουαρίου (3198)
-
▼
2017
(41099)
- ► Δεκεμβρίου (3127)
-
▼
Νοεμβρίου
(6729)
-
▼
Νοε 27
(377)
- Impact of Helicobacter pylori on Alzheimer's disea...
- Detection of Helicobacter pylori in stool samples ...
- Pharmacokinetic/pharmacodynamic analysis of adjunc...
- Prognosis of status epilepticus in elderly patients
- Seizures, CSF neurofilament light and tau in patie...
- Serial electrophysiology in Guillain-Barré syndrom...
- Real-life clinical use of natalizumab and fingolim...
- IJMS, Vol. 18, Pages 2547: Nodule-Enriched GRETCHE...
- Termination of reentrant atrial tachycardia via op...
- Functions of the multi-interacting protein KIDINS2...
- Serial lipase for pancreatitis: not enough evidence
- Correction to: Heavy metal and nutrient uptake in ...
- Phantom validation of quantitative Y-90 PET/CT-bas...
- Management of hereditary breast and ovarian cancer
- A Ra dial Pi llar D evice (RAPID) for continuous a...
- First practical synthesis of novel 1-phosphonylate...
- A new cyclic telluride. Synthesis and reactions of...
- A DFT study of O2 and Cl2 adsorption onto Al12N12 ...
- C-O and C-S coupling reaction of 1,2-di(pyrimidin-...
- Alkylation of 9-substituted guanine derivatives wi...
- Effect of Xylan Sulfates on Coagulation of Human B...
- Pirfenidone-induced hyponatraemia: insight in mech...
- Puff laddy: a 5-year-old-boy with forehead swelling
- Dying art of a history and physical: pulsatile tin...
- Rare and unusual case of perforated appendicitis i...
- Fish hook injury: an easy removal using the string...
- Paediatric Salter-Harris type IV injury of distal ...
- Lesion in the external auditory canal: an unusual ...
- Cancer-related microangiopathic haemolytic anaemia
- Clinical consequences of upfront pathology review ...
- Pirfenidone-induced hyponatraemia: insight in mech...
- Puff laddy: a 5-year-old-boy with forehead swelling
- Dying art of a history and physical: pulsatile tin...
- Rare and unusual case of perforated appendicitis i...
- Fish hook injury: an easy removal using the string...
- Paediatric Salter-Harris type IV injury of distal ...
- Cancer-related microangiopathic haemolytic anaemia
- Delayed presentation of iatrogenic bladder perfora...
- Tuberculosis in Pap Samples with Emphasis on LBC: ...
- Cysticercosis and cytodiagnosis
- A comparison of results of empirical studies of su...
- Rhabdomyolysis, lactic acidosis, and multiple orga...
- Rhabdomyolysis, lactic acidosis, and multiple orga...
- Mycotic pseudoaneurysm of a pulmonary artery branc...
- Analysis of the characteristics of cracked teeth a...
- The costs and benefits of water fluoridation in NZ
- Nickle(II) ions exacerbate bleomycin-induced pulmo...
- Heterogeneous activation of peroxymonosulfate by h...
- Scutellarin alleviates lipopolysaccharide-induced ...
- Characteristics of the trace elements and arsenic,...
- Variations of radon concentration in the atmospher...
- Efficacy and safety of the “Xingnao Kaiqiao” acupu...
- An integrated digital/clinical approach to smoking...
- Sustained inflations versus UK standard inflations...
- Editorial Board/Aims and Scope
- Dengue vaccine supplies under endemic and epidemic...
- Effect of dendritic cell-cytokine-induced killer c...
- A guide to virtual reality da Vinci simulators
- 2017 TERMIS - Americas; Conference & Exhibition; C...
- Abstract Author Index; by abstract number
- Development of a high-resolution infrared thermogr...
- Life course evolution of body size and breast canc...
- Examining tRNA 3-ends in Escherichia coli: A teamw...
- Safety and Pharmacokinetics of the Aminomethylcycl...
- The ABC of biofilm drug tolerance: The MerR-like r...
- Azithromycin Pharmacodynamics against 'Persistent ...
- Increasing antimicrobial resistance in non-typhoid...
- A simple in vitro assay to evaluate the incorporat...
- Efficacy of novel anti-staphylococcal ectolysin P1...
- On the antibacterial and sterilizing effect of ben...
- Preconditioned Augmented Lagrangian formulation fo...
- Cell-Autonomous Metabolic Reprogramming in Hypoxia
- Postnatal myocardium remodelling generates inhomog...
- Hepatitis B reactivation and outcomes in persons t...
- Sofosbuvir and velpatasvir with or without voxilap...
- The Walking Dead: sequential nuclear and organelle...
- miR-221/222 cluster expression improves clinical s...
- Selective N-mono-alkylation of 6-aminouracils with...
- Perioperative, spatiotemporally coordinated activa...
- miR-139-5p modulates radiotherapy resistance in br...
- A potent, metabolically stable tubulin inhibitor t...
- Distinct TP63 isoform-driven transcriptional signa...
- New mechanisms of resistance to MEK inhibitors in ...
- Vitamin C sensitizes melanoma to BET inhibitors
- Utility of single cell genomics in diagnostic eval...
- SHMT2 desuccinylation by SIRT5 drives cancer cell ...
- MYC targeted long non-coding RNA DANCR promotes ca...
- ER alpha binding by transcription factors NFIB and...
- Small molecule inhibition of Axl targets tumor imm...
- YAP1 and COX2 coordinately regulate urothelial can...
- Synthetic lethality of PARP inhibitors in combinat...
- Small cell carcinomas of the bladder and lung are ...
- Classifying colorectal cancer by tumor location ra...
- Honokiol Radiosensitizes Squamous Cell Carcinoma o...
- Cell-Free DNA and Circulating Tumor Cells: Compreh...
- t-Darpp activates IGF-1R signaling to regulate glu...
- Novel BAFF-receptor antibody to natively folded re...
- Breast MRI as a Problem-solving Study in the Evalu...
- Model-based Iterative Reconstruction in Low-radiat...
- CT Features of Hepatic Veno-occlusive Disease
-
▼
Νοε 27
(377)
- ► Σεπτεμβρίου (2173)
-
►
2016
(13807)
- ► Δεκεμβρίου (700)
- ► Σεπτεμβρίου (600)
- ► Φεβρουαρίου (1350)
- ► Ιανουαρίου (1400)
-
►
2015
(1500)
- ► Δεκεμβρίου (1450)
Ετικέτες
Δευτέρα 27 Νοεμβρίου 2017
Indoor radon measurements in south west England explained by topsoil and stream sediment geochemistry, airborne gamma-ray spectroscopy and geology
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου