Gross alpha radioactivity of drinking water in Venezuela

Sajó-Bohus, L.; Gómez, J.; Capote, Tarcisio; Greaves, E.D.; Herrera, Oscar Bustos; Salazar, V.; Smith, A. R.

doi:10.1016/s0265-931x(96)00056-2

Cited by 39 publications

(11 citation statements)

References 3 publications

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“…The results obtained for mean beta activity is 39.914 Bql -1 higher than the 0.186 Bql -1 recorded at Mills Creek, Australia; 39.666Bql -1 higher than the average beta activity concentration recorded at river Kaduna and 39.606Bql -1 higher than the value recorded at Causeway River in Australia (Onoja, 2004b). The average beta activity of the water sources surveyed in this work is far above the values reported for the Baltic Sea, Finland lakes, Okpare Creek and Venezuela public drinking water (Szabo, et al, 1998;Sajo-Bohus, 1997 andAgbalagba, 2007). Table 4 shows the comparison of the beta activity concentration of the three water sources in the oil fields with the WHO recommended maximum level, the result revealed that the average value for all the three sources of water examined exceeded the WHO maximum level of 1.0Bql -1 .…”

Section: Ezekiel O Agbalagba; Gregory O Avwiri; Yehuwdah E Chad-ummentioning

confidence: 48%

“…This estimation gives a good approximation of the effective dose rate to our bodies and is a function of the quantity of the water consumed per year. Two distinct classes of people with estimated quantity of water consumption rate per year have been reported: 730 litres for adults and 200 litres for infants (Fernandez, et al, 1992;Torrealba, et al, 1993 andSajo-Bohus et al, 1997).…”

Section: Ezekiel O Agbalagba; Gregory O Avwiri; Yehuwdah E Chad-ummentioning

confidence: 99%

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Gross &#945 and &#946 Activity Concentration and Estimation of Adults and Infants Dose intake in Surface and Ground Water of Ten Oil Fields Environment in Western Niger Delta of Nigeria

Agbalagba¹,

Avwiri²,

Chad-Umoren³

2013

Journal of Applied Sciences and Environmental Management

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The oil and gas rich Niger Delta region of Nigeria is characterized by environmental degradation leading to environmental pollution from oil and gas activities. This study examined the gross α and β activity in thirty (river/stream, well and tap) water samples collected from ten oil fields in the Western Niger Delta region of Nigeria. The counting system employed in this analysis is the Gas-flow proportional counter {Eurisys Measure IN20 low-background multiple (eight) channel counter}. Gross alpha activity concentration range from 0.01±0.002 to 0.7±0.01 (0.15±0.003) Bql-1 , 0.01±0.003 to 0.5±0.01 (0.1±0.003)Bql-1 and 0.02±0.001 to 35.1±1.1 (4.1±0.1) Bql-1 while beta activity concentration ranged from 1.1±0.04 to 13.2±0.1 (6.0±0.1) Bql-1 , 0.7±0.1 to 54.7±1.3 (8.9±0.2)Bql-1 and 0.7±0.03 to 151.2±1.8 (40.1±0.9)Bql-1 for well, tap and river waters respectively. Correlation value between α and β activities in well, tap and river water is 0.025, 0.047 and 0.512 respectively. The results show that except for the alpha activity in the tap water samples, the average natural activity concentrations of αand β-emitting radionuclides in the samples are slightly above the WHO recommended limit. For all samples the gross β activities are higher than the corresponding gross α activities. The mean effective equivalent dose intake per year due to alpha activity in the water samples for adults and infants are: 76.4±1.8 and 20.9±55µSvy-1 , 54.6±1.3 and 14.9±0.4 µSvy-1 , and 2118±70 and 584±19.2µSvy-1 in well, tap, and river water samples respectively. The results obtained for dose intake are below the WHO recommended reference level of 0.1mSvy-1 , except for the water sample from Uzere river. This study indicates that the water sources evaluated, especially the rivers, are contaminated radiologically. @JASEM

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Section: Ezekiel O Agbalagba; Gregory O Avwiri; Yehuwdah E Chad-ummentioning

confidence: 48%

Section: Ezekiel O Agbalagba; Gregory O Avwiri; Yehuwdah E Chad-ummentioning

confidence: 99%

Gross &#945 and &#946 Activity Concentration and Estimation of Adults and Infants Dose intake in Surface and Ground Water of Ten Oil Fields Environment in Western Niger Delta of Nigeria

Agbalagba¹,

Avwiri²,

Chad-Umoren³

2013

Journal of Applied Sciences and Environmental Management

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“…where N is net gross a count rate or net gross b count rate (cpm), Eff is gross a or gross b counting efficiency (%), V is volume of sample aliquot in liter and 60 is conversion factor from minute to second in this equation. The doses was calculated by the following equation (USA-EPA 1988;Sajo-Bohus et al 1997) :…”

Section: Methodsmentioning

confidence: 99%

Gross α and β activity concentrations in various water from Karaman, Turkey

2015

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Natural activity concentrations in water sources are necessary to assess the effects of exposure to environmental radiation. The purpose of this study is to determine the activity concentrations of gross a and b in various water samples collected from 30 different locations in Karaman province, Turkey. The estimated values of activities of gross a and b obtained from water samples vary from 0.006 to 0.125 Bq L-1 and from 0.001 to 0.667 Bq L-1 , respectively. The gross b activities have been found always higher than the corresponding gross a activities for all samples. The obtained values indicated that concentration levels of a and b emitting radionuclides in samples have not exceeded WHO recommendations. The results represented here that the AED values are below of recommended reference level (0.1 mSv year-1) by the WHO for all water samples in this study.

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“…where ADR w is the annual effective dose equivalent, A w a;b is the activity concentration of gross alpha, I w is the intake of drinking water for each person was assumed to be 730 L in a year, and IDF is the ingestion effective dose equivalent factor 3.58 9 10 -4 mSv Bq -1 for gross alpha [47][48][49]. The annual effective dose equivalent due to water consumption was determined for the study area.…”

Section: Assessment Of Radiological Health Effectsmentioning

confidence: 99%

Natural environmental radioactivity and the corresponding health risk in Johor Bahru District, Johor, Malaysia

Saleh

Ramli

Hamzah

et al. 2014

J Radioanal Nucl Chem

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This study aims to obtain the baseline data on environmental terrestrial radiation and to assess the corresponding health risk in Johor Bahru District, Johor, Malaysia. The mean activity concentrations of 232 Th, 226 Ra and 40 K were 119 ± 6, 51 ± 4 and 158 ± 21 Bq kg -1 , respectively. Primordial radionuclide 232 Th is the main contributor to gamma dose rate and the mean found to be 135 nGy h -1 . Gross alpha and gross beta activity concentrations in water were 0.012 ± 0.003 and 0.234 ± 0.018 Bq L -1 , respectively.

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Gross alpha radioactivity of drinking water in Venezuela

Cited by 39 publications

References 3 publications

Gross &#945 and &#946 Activity Concentration and Estimation of Adults and Infants Dose intake in Surface and Ground Water of Ten Oil Fields Environment in Western Niger Delta of Nigeria

Gross &#945 and &#946 Activity Concentration and Estimation of Adults and Infants Dose intake in Surface and Ground Water of Ten Oil Fields Environment in Western Niger Delta of Nigeria

Gross α and β activity concentrations in various water from Karaman, Turkey

Natural environmental radioactivity and the corresponding health risk in Johor Bahru District, Johor, Malaysia

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