potassium radioisotopes

Summary

Summary: Unstable isotopes of potassium that decay or disintegrate emitting radiation. K atoms with atomic weights 37, 38, 40, and 42-45 are radioactive potassium isotopes.

Top Publications

  1. Freitas A, Alencar A. Gamma dose rates and distribution of natural radionuclides in sand beaches--Ilha Grande, Southeastern Brazil. J Environ Radioact. 2004;75:211-23 pubmed
    ..The annual effective dose equivalent corresponding to Preta beach is 0.15 mSv a(-1) and to Dois Rios 0.08 mSv a(-1)...
  2. Coskun D, Britto D, Kronzucker H. Regulation and mechanism of potassium release from barley roots: an in planta 42K+ analysis. New Phytol. 2010;188:1028-38 pubmed publisher
  3. Britto D, Szczerba M, Kronzucker H. A new, non-perturbing, sampling procedure in tracer exchange measurements. J Exp Bot. 2006;57:1309-14 pubmed
  4. Kronzucker H, Szczerba M, Britto D. Cytosolic potassium homeostasis revisited: 42K-tracer analysis in Hordeum vulgare L. reveals set-point variations in [K+]. Planta. 2003;217:540-6 pubmed
  5. Jibiri N, Okeyode I. Activity concentrations of natural radionuclides in the sediments of Ogun River, Southwestern Nigeria. Radiat Prot Dosimetry. 2011;147:555-64 pubmed publisher
    ..395±4.516 (at Sokori) and 5.037±2.244 (at Mile 12-Maidan) to 23.096±4.806 (at Sokori). The values obtained were compared with internationally accepted values. No man-made radionuclides were detected at any of the locations...
  6. El Bahi S. Radioactivity levels of salt for natural sediments in the northwestern desert and local markets in Egypt. Appl Radiat Isot. 2003;58:143-8 pubmed
    ..The absorbed dose rate of gamma radiation was estimated to be 1.46-16.13 nGy/h. The thorium-to-uranium concentration ratios were also estimated for the samples...
  7. Odumo O, Mustapha A, Patel J, Angeyo H. Radiological survey and assessment of associated activity concentration of the naturally occurring radioactive materials (NORM) in the Migori artisanal gold mining belt of southern Nyanza, Kenya. Appl Radiat Isot. 2011;69:912-6 pubmed publisher
    ..The results obtained show that the artisanal miners are exposed to various levels of radionuclides and dust and necessary precautions need to be taken...
  8. Szczerba M, Britto D, Kronzucker H. The face value of ion fluxes: the challenge of determining influx in the low-affinity transport range. J Exp Bot. 2006;57:3293-300 pubmed
    ..The findings warrant a re-evaluation of a large body of literature reporting influx in the LATS range, and are of fundamental importance to ion flux experimentation in plant physiology...
  9. Wang Z, He J, Du Y, He Y, Li Z, Chen Z, et al. Natural and artificial radionuclide measurements and radioactivity assessment of soil samples in eastern Sichuan province (China). Radiat Prot Dosimetry. 2012;150:391-7 pubmed publisher
    ..This is the first time the absorbed dose rate in the east region of Sichuan has been mapped. Overall, the environmental radiation background is greater in the southern part of the area studied than in the northern...

More Information

Publications62

  1. Camilleri J, Sammut M, Montesin F. Utilization of pulverized fuel ash in Malta. Waste Manag. 2006;26:853-60 pubmed
    ..In conclusion, utilization of PFA in the construction industry would be a better way of disposing of the ashes rather than controlling the leachate and any radioactivity emitted by the landfilled ashes...
  2. Korobova E, Brown J, Ukraintseva N, Surkov V. 137Cs and 40K in the terrestrial vegetation of the Yenisey Estuary: landscape, soil and plant relationships. J Environ Radioact. 2007;96:144-56 pubmed
    ..Horsetail and willow leaves were noted for higher (40)K content and lower (137)Cs Tag compared to mosses and alder, respectively. This makes the latter plant types more appropriate indicators of (137)Cs contamination...
  3. Zare M, Mostajaboddavati M, Kamali M, Abdi M, Mortazavi M. 235U, 238U, 232Th, 40K and 137Cs activity concentrations in marine sediments along the northern coast of Oman Sea using high-resolution gamma-ray spectrometry. Mar Pollut Bull. 2012;64:1956-61 pubmed publisher
    ..02 Bq/kg, 222.89 and 535.07 Bq/kg and 0.14 and 2.8 Bq/kg, respectively. The radium equivalent activity was well below the defined limit of 370 Bq/kg. The external hazard indices were found to be less than 1, indicating a low dose...
  4. Rahman S, Rafique M, Jabbar A, Matiullah -. Radiological hazards due to naturally occurring radionuclides in the selected building materials used for the construction of dwellings in four districts of the Punjab Province, Pakistan. Radiat Prot Dosimetry. 2013;153:352-60 pubmed publisher
    ..The samples considered were safe for use in construction of dwellings in the study area and do not pose any significant source of radiation hazard...
  5. Sam A, Sirelkhatim D, Hassona R, Hassan R, Hag Musa E, Ahmed M. Assessment of gamma dose rate over a suspected uranium mineralisation area of Jebel Mun, Western Sudan. Radiat Prot Dosimetry. 2002;102:169-74 pubmed
    ..59). The 232Th series is the major producer of the surface radioactivity followed by 40K as they contribute 48% and 32% of the total absorbed dose, respectively...
  6. Ligero R, Vidal J, Meléndez M, Hamani M, Casas Ruiz M. Sedimentology models from activity concentration measurements: application to the "Bay of Cadiz" Natural Park (SW Spain). J Environ Radioact. 2009;100:203-8 pubmed publisher
  7. Mitrovic B, Vitorovic G, Vitorovic D, Pantelic G, Adamovic I. Natural and anthropogenic radioactivity in the environment of mountain region of Serbia. J Environ Monit. 2009;11:383-8 pubmed publisher
    ..An average annual dose arising from (137)Cs was 7.4 microSv due to ingestion of cow milk and 6.3 microSv due to ingestion of mushrooms at the Maljen mountain...
  8. Saleh M, Ramli A, Alajerami Y, Aliyu A. Assessment of environmental (226)Ra, (232)Th and (40)K concentrations in the region of elevated radiation background in Segamat District, Johor, Malaysia. J Environ Radioact. 2013;124:130-40 pubmed publisher
    ..These results were used in the plotting of digital maps (using ARCGIS 9.3) for isodose. The results are compared with values giving in UNSCEAR 2000. ..
  9. Narayana Y, Rajashekara K. The importance of physico-chemical parameters on the speciation of natural radionuclides in riverine ecosystems. J Environ Radioact. 2010;101:958-64 pubmed publisher
    ..However, the activity of (210)Po and (210)Pb in sediment showed a moderate positive correlation with organic matter content and a good correlation with clay content of sediment...
  10. Damla N, Cevik U, Kobya A, Ataksor B, Isik U. Assessment of environmental radioactivity for Batman, Turkey. Environ Monit Assess. 2010;160:401-12 pubmed publisher
    ..The data generated in this study can be used to determine whether the Batman province is in a normal or high background radiation area and provides a valuable database for future estimations of the impact of radioactive pollution...
  11. Ajayi O. Measurement of activity concentrations of 40K, 226Ra and 232Th for assessment of radiation hazards from soils of the southwestern region of Nigeria. Radiat Environ Biophys. 2009;48:323-32 pubmed publisher
    ..95 +/- 5.04 to 963.15 +/- 41.87 Bq kg(-1). Only the mean value of the representative level index exceeds the limit for areas of normal background radiation. All other indices show mean values that are lower than the recommended limits...
  12. Zaidi J, Arif M, Ahmad S, Fatima I, Qureshi I. Determination of natural radioactivity in building materials used in the Rawalpindi/Islamabad area by gamma-ray spectrometry and instrumental neutron activation analysis. Appl Radiat Isot. 1999;51:559-64 pubmed
    ..5 mSv y-1. The gamma-spectrometric and INAA techniques complemented each other well in this study...
  13. Bassioni G, Abdulla F, Morsy Z, El Faramawy N. Evaluation of naturally occurring radioactive materials (NORMs) in inorganic and organic oilfield scales from the Middle East. Arch Environ Contam Toxicol. 2012;62:361-8 pubmed publisher
    ..The results can be used to assess the respective hazard on workers in the field and represent a basis for revisiting current engineering practices...
  14. Lindinger M, Ecker G. Gastric emptying, intestinal absorption of electrolytes and exercise performance in electrolyte-supplemented horses. Exp Physiol. 2013;98:193-206 pubmed publisher
    ..The ES clearly served as a reservoir to replace sweat ion losses during exercise, and administration of ES prior to exercise resulted in increased duration of submaximal exercise...
  15. Kossert K, Gunther E. LSC measurements of the half-life of 40K. Appl Radiat Isot. 2004;60:459-64 pubmed
    ..With the specific activity the half-life is calculated to be T1/2 = 1.248(3) x 10(9) a. The result is in reasonable agreement with other measurement results provided the same isotopic concentration of 40K is used...
  16. Ugur F, Turhan S, Goren E, Gezer F, Yegingil Z, Sahan H, et al. A survey of distribution of terrestrial radionuclides in surface soil samples in and around the Osmaniyeprovince, Turkey. Radiat Prot Dosimetry. 2013;154:483-9 pubmed publisher
    ..The outdoor absorbed GDRs fluctuate from 5.2 to 53.6 nGy h(-1) with a mean of 22.4±9.5. The corresponding mean AED is found to be 0.03 mSv...
  17. Ishikawa T, Uchiyama M, Hoshi M, Takada J, Endo S, Sugiura N, et al. New in-vivo calibration phantoms and their performance. Health Phys. 2002;82:348-57 pubmed
    ..Differences in counting efficiency between the block phantoms and the anthropometric phantoms for the same age were no more than 6%...
  18. Parmaksiz A, Agus Y, Bulgurlu F, Bulur E, Yildiz C, Öncü T. Activity concentrations of 224Ra, 226Ra, 228Ra and 40K radionuclides in refinery products and the additional radiation dose originated from oil residues in Turkey. Radiat Prot Dosimetry. 2013;156:481-8 pubmed publisher
    ..The maximum activity concentration index and the alpha index were found to be 4.2 and 4.0, respectively. The annual effective doses of residue samples were calculated below the permitted dose rate for the public, i.e. 1 mSv y(-1). ..
  19. Tsutsumi T, Nabeshi H, Ikarashi A, Hachisuka A, Matsuda R. [Estimation of the committed effective dose of radioactive cesium and potassium by the market basket method]. Shokuhin Eiseigaku Zasshi. 2013;54:7-13 pubmed
    ..The estimated doses of naturally occurring radioactive potassium in these areas were in the range of 0.17-0.20 (0.18-0.20) mSv/year, and there were no significant differences between the areas...
  20. Shetty P, Narayana Y. Variation of radiation level and radionuclide enrichment in high background area. J Environ Radioact. 2010;101:1043-7 pubmed publisher
    ..A good correlation was observed between computed dose and measured dose in air. The correlation between (232)Th and (226)Ra was also moderately high. The results of these investigations are presented and discussed in this paper...
  21. Ademola J, Nwafor C. Radiological risk assessment of natural radionuclides in sand collected from some beaches along the coastline of southwestern Nigeria. Radiat Prot Dosimetry. 2013;156:458-64 pubmed publisher
    ..The radiological hazard indices are within the maximum recommended limits, hence pose no significant radiological hazards for construction...
  22. Besson B, Pourcelot L, Lucot E, Badot P. Variations in the transfer of radiocesium (137Cs) and radiostrontium (90Sr) from milk to cheese. J Dairy Sci. 2009;92:5363-70 pubmed publisher
    ..57). Thus, the Pf is enhanced in hard cheeses that are enriched in calcium. This is confirmed by nearly constant Fr values, ranging between 0.66 and 0.83...
  23. Mujahid S, Hussain S. Natural radioactivity in soil in the Baluchistan province of Pakistan. Radiat Prot Dosimetry. 2010;140:333-9 pubmed publisher
    ..The calculated absorbed dose rate in air and the annual effective dose were in the range of 35-59 nGy h(-1) and 0.17-0.29 mSv, respectively. Radon activity in the soil gas was found in the range of 357-2476 Bq m(-3)...
  24. Krolak E, Kwapulinski J, Fischer A. (137)Cs and (40)K isotopes in forest and wasteland soils in a selected region of eastern Poland 20 years after the Chernobyl accident. Radiat Environ Biophys. 2010;49:229-37 pubmed publisher
    ..76 kBq m(-2) in layer 7-12 cm. No similar pattern was observed in wasteland soils. The concentrations of (40)K in forest and wasteland soils did not change significantly with depth...
  25. Baeza A, Guillen J, Ontalba Salamanca M, Rodriguez A, Ager F. Radiological and multi-element analysis of sediments from the Proserpina reservoir (Spain) dating from Roman times. J Environ Radioact. 2009;100:866-74 pubmed publisher
    ..Nevertheless, an unusually high Zn content was detected at depths corresponding to pre-Roman times, due to geological anomalies in the area...
  26. Ghosh D, Deb A, Bera S, Sengupta R, Patra K. Measurement of natural radioactivity in chemical fertilizer and agricultural soil: evidence of high alpha activity. Environ Geochem Health. 2008;30:79-86 pubmed
    ..These results were used to estimate environmental radiation exposure on human health contributed by the direct application of fertilizers...
  27. Ajayi O. Evaluation of absorbed dose rate and annual effective dose equivalent due to terrestrial gamma radiation in rocks in a part of Southwestern Nigeria. Radiat Prot Dosimetry. 2002;98:441-4 pubmed
    ..The average absorbed dose rate and average annual effective dose equivalent was found to be 8.33 +/- 2.76 nGy x h(-1) and 8.7 +/- 2.9 microSv x y(-1) respectively...
  28. Renkin E. Transport of potassium-42 from blood to tissue in isolated mammalian skeletal muscles. Am J Physiol. 1959;197:1205-10 pubmed
  29. Fatima I, Zaidi J, Arif M, Tahir S. Measurement of natural radioactivity in bottled drinking water in Pakistan and consequent dose estimates. Radiat Prot Dosimetry. 2007;123:234-40 pubmed
    ..1 mSv y(-1) as well as the average radiation dose of 0.29 mSv y(-1) received per head worldwide due to ingestion of natural radionuclides assessed by UNSCEAR (2000)...
  30. Jabbar A, Arshed W, Bhatti A, Ahmad S, Akhter P, Rehman S, et al. Measurement of soil radioactivity levels and radiation hazard assessment in southern Rechna interfluvial region, Pakistan. Environ Monit Assess. 2010;169:429-38 pubmed publisher
    ..The measured values are comparable with other global radioactivity measurements and are found to be safe for the public and the environment...
  31. Zerquera J, Alonso M, Bejerano G, López J, Rodriguez N. Assessment of the doses received by the Cuban population from 40K contained in the body: modelling based on a neural network. Radiat Prot Dosimetry. 2003;104:237-43 pubmed
    ..The modelobtained allows consideration of the anatomical features of each person in the estimation of doses...
  32. Khandaker M, Mohd Nasir N, Asaduzzaman K, Olatunji M, Amin Y, Kassim H, et al. Evaluation of radionuclides transfer from soil-to-edible flora and estimation of radiological dose to the Malaysian populace. Chemosphere. 2016;154:528-536 pubmed publisher
    ..Results for the studied media show that the prevalent activities and mobilities pose no significant threat to human health, the edible vegetables being safe for consumption. ..
  33. Asgharizadeh F, Ghannadi M, Samani A, Meftahi M, Shalibayk M, Sahafipour S, et al. Natural radioactivity in surface soil samples from dwelling areas in Tehran city, Iran. Radiat Prot Dosimetry. 2013;156:376-82 pubmed publisher
    ..06 and 0.11 mSv y(-1). The measurement results and calculated values obtained from this study indicate that the dwelling areas in Tehran city, Iran, have background radioactivity levels within natural limits. ..
  34. Ramasamy V, Paramasivam K, Suresh G, Jose M. Function of minerals in the natural radioactivity level of Vaigai River sediments, Tamilnadu, India--spectroscopical approach. Spectrochim Acta A Mol Biomol Spectrosc. 2014;117:340-50 pubmed publisher
    ..The statistical analysis confirms that the clay mineral kaolinite is the major factor than other major minerals to induce the important radioactivity variables such as absorbed dose rate and concentrations of (232)Th and (238)U. ..
  35. Watson W, Sumner D, Baker J, Kennedy S, Reid R, Robinson I. Radionuclides in seals and porpoises in the coastal waters around the UK. Sci Total Environ. 1999;234:1-13 pubmed
  36. Otwoma D, Patel J, Bartilol S, Mustapha A. Estimation of annual effective dose and radiation hazards due to natural radionuclides in Mount Homa, southwestern Kenya. Radiat Prot Dosimetry. 2013;155:497-504 pubmed publisher
    ..These results imply that Mount Homa region is a high background radiation area. ..
  37. Hill R, Davies P. You look all right to me: compromised nutritional status in paediatric patients with ulcerative colitis. J Pediatr Gastroenterol Nutr. 2013;56:385-9 pubmed publisher
    ..The present study aims to investigate BMI in patients with UC in relation to their BCM...
  38. Ramirez L, Wielopolski L. Analysis of potassium spectra with low counting statistics using trapezoidal and library least-squares methods. Appl Radiat Isot. 2004;61:1367-73 pubmed
    ..We demonstrate, using measured and synthetic spectra, that a smaller error is obtained in the analysis of potassium when using the Library Least-Squares method...
  39. Dragovic S, Jankovic L, Onjia A. Assessment of gamma dose rates from terrestrial exposure in Serbia and Montenegro. Radiat Prot Dosimetry. 2006;121:297-302 pubmed
    ..e. the dose was lower than world wide average value. According to the values of external hazard index (mean: 0.39) obtained in this study, the radiation hazard was found to be insignificant for population living in the investigated area...
  40. Guimaraes S, Hamza V, da Silva J. Airborne geophysical surveys in the north-central region of Goias (Brazil): implications for radiometric characterization of tropical soils. J Environ Radioact. 2013;116:10-8 pubmed publisher
    ..Such associations imply that the processes which determine evolutionary trends of soil types are somehow related to the events that control the development of structural features in subsurface layers...
  41. James J, Dileep B, Ravi P, Joshi R, Ajith T, Hegde A, et al. Soil to leaf transfer factor for the radionuclides ²²?Ra, ??K, ¹³?Cs and ??Sr at Kaiga region, India. J Environ Radioact. 2011;102:1070-7 pubmed publisher
    ..Soil to leaf transfer factor for ²²?Ra, ??K, ¹³?Cs and ??Sr was found to be in the range of 0.03-0.65, 0.32-8.04, 0.05-3.03 and 0.42-2.67 respectively...
  42. O Hehir S, Green S, Beddoe A. A new method of body habitus correction for total body potassium measurements. Phys Med Biol. 2006;51:4253-65 pubmed
    ..7% (SD). The uncertainty in the method of body habitus correction (applicable also to phantom-based methods) is 1.5% (SD). It is concluded that this new strategy provides a sufficiently accurate model for routine clinical use...
  43. Erlinger C, Lettner H, Hubmer A, Hofmann W, Steinhausler F. Determination of (137)Cs in the water system of a pre-Alpine lake. J Environ Radioact. 2009;100:354-60 pubmed publisher
    ..In a first approach it was tried to calculate the catchment run-off factor of (137)Cs during a period without heavy rainfalls. The result is in good agreement with run-off factors determined in other similar investigations in Austria...
  44. Turhan S, Aykamis A, Kiliç A. Natural radionuclide content and radiological hazard associated with usage of quartzite sand samples from Ovacik-Silifke-Mersin open pit as building material in Turkey. Radiat Prot Dosimetry. 2009;136:101-7 pubmed publisher
    ..20 to 0.75, with a mean of 0.34 +/- 0.11, 0.23 to 0.77 with a mean of 0.39 +/- 0.12, 58.27 to 201.51 nGy h(-1) with a mean of 93.33 +/- 27.63 nGy h(-1) and 0.29 to 0.99 mSv with a mean of 0.46 +/- 0.14 mSv, respectively...
  45. Macdonald C, Ewing L, Elkin B, Wiewel A. Regional variation in radionuclide concentrations and radiation dose in caribou (Rangifer tarandus) in the Canadian Arctic; 1992-94. Sci Total Environ. 1996;182:53-73 pubmed
    ..As yet, there have been no reports of observable effects due to these relatively high exposures and many of the herds continue to thrive and increase in size...
  46. Hamed Bashier E, Salih I, Khatir Sam A. Gis predictive mapping of terrestrial gamma radiation in the Northern State, Sudan. Radiat Prot Dosimetry. 2012;151:500-10 pubmed publisher
    ..Also, a map for absorbed dose rate in air at a height of 1 m above the ground level was produced, which showed a trend of increasing from the west towards south-east of the State...
  47. Ranade A, Pandey M, Datta D. Estimation of factors from natural and anthropogenic radioactivity present in the surface soil and comparison with DCF values. Radiat Prot Dosimetry. 2013;153:112-6 pubmed publisher
    ..The estimated coefficients (nGy h(-1) Bq(-1) kg(-1)) were 0.454, 0.586, 0.035 and 0.392, respectively. The factors calculated were in good agreement with the literature values...
  48. Song G, Chen D, Tang Z, Zhang Z, Xie W. Natural radioactivity levels in topsoil from the Pearl River Delta Zone, Guangdong, China. J Environ Radioact. 2012;103:48-53 pubmed publisher
    ..6 to 1.8, respectively. The Ra(eq) and the I(r) in all the investigated regions were up to 75% higher than the set limits of 370 Bq kg?¹ and 1.0, respectively...
  49. Ogata Y, Nishizawa K. In situ calibration and evaluation of the accuracy of a waste water monitoring system. Health Phys. 2002;82:327-34 pubmed
    ..91 +/- 0.10%. Using the calibration tank significantly reduced the cost and labor for calibration. In addition, calibration with natural potassium (40K) proved to be effective for periodic checks of the detector...
  50. Scheibel V, Appoloni C. Committed effective dose determination in southern Brazilian cereal flours. Radiat Prot Dosimetry. 2013;156:68-74 pubmed publisher
    ..36 ?Sv.y(-1) for (228)Ra in cassava flour (adults). All committed effective doses determined at the present work were lower than the International Atomic Energy Agency dose limit of 1 mSv.y(-1), to the public exposure. ..
  51. Sam A, Abbas N. Assessment of radioactivity and the associated hazards in local and imported cement types used in Sudan. Radiat Prot Dosimetry. 2001;93:275-7 pubmed
    ..The annual dose limit falls within 0.19 to 0.30 mSv, which is an order of magnitude below the criterion limit specified for building materials in the literature...
  52. Ishikawa T. Long-term changes in body potassium concentration and dose from 40K for a Japanese adult male group. Health Phys. 2000;78:420-33 pubmed
    ..The average annual dose for subjects aged 30-59 y was 194 muGy in 1975, changing to 166 muGy in 1998. The decrease in the average annual dose was about 14% over the 23-y study period...
  53. Aydarous A, Zeghib S, Al Dughmah M. Measurements of natural radioactivity and the resulting radiation doses from commercial granites. Radiat Prot Dosimetry. 2010;142:363-8 pubmed publisher
    ..Report by a Group of Experts of the OECD, Nuclear Energy Agency, OECD, Paris, 1979) except in three samples...