Determination of natural radionuclides in a coastal marine sediment — An analysts' intercomparison exercise

Harvey, B.R.; Young, A.K.

doi:10.1016/0048-9697(88)90333-6

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…The sedimentation rates obtained in this study can be considered as a relatively high sedimentation rate for the Black Sea region compared to the values of sedimentation rates given in other studies. [10][11][12] The main reason of this high value is probably consequence of collecting samples from an area close to Danube River's delta. Danube is a large river, passing through several European countries, thus it carries large flux of particulate matter into the sea.…”

Section: Discussionmentioning

confidence: 99%

Dating of Black Sea sediments from Romanian coast using natural²¹⁰Pb and fallout¹³⁷Cs

Ayçık

Çetaku²,

Erten³

et al. 2004

Journal of Radioanalytical and Nuclear Chemistry

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The sediment samples collected near the shore from Romania were used for the determination of levels of natural 210 Pb, 226 Ra and fallout 137 Cs radionuclides. The sediment samples were dried and ground to a fine powder. Airtight sealed samples were counted by gamma-spectrometer with 110 cm 3 well-type HPGe detector for one week each. By using the isotopic analysis results, sediment accumulation rate was determined. A sedimentation rate of 0.20±0.01 cm. y-1 was determined using 210 Pb method and 0.15±0.03 cm. y-1 using 137 Cs isotope. Fallout peak from Chernobyl reactor accident, as well as the peaks due to nuclear tests, act as time markers.

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Section: Discussionmentioning

confidence: 99%

Dating of Black Sea sediments from Romanian coast using natural²¹⁰Pb and fallout¹³⁷Cs

Ayçık

Çetaku²,

Erten³

et al. 2004

Journal of Radioanalytical and Nuclear Chemistry

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“…This group has organised a number of laboratory intercomparisons in the past which have served to fill important gaps left by organisations providing reference and proficiency testing material. The samples generated by individual laboratories have included determination of 238 U, 235 U, 234 U, 226 Ra and 210 Pb in an Irish Sea sediment [8], grass and cabbage grown on soil contaminated with radioactivity (gamma-emitters, Pu, 241 Am and 90 Sr), urine containing 210 Po and sewage sludge containing 3 H and 14 C. Since the laboratories involved are generally accredited to ISO 17025:2005, the results of the intercomparisons provide good quality data for assigned value and uncertainties associated with the test matrix.…”

Section: Interlaboratory Comparisonmentioning

confidence: 99%

Quality assurance in the nuclear sector

Parry

2012

Radiochimica Acta

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Summary. The nuclear sector in the UK operates under regulation requiring assurance that the quality of radioactive measurements is "fit for purpose". Laboratories operate a quality system under ISO 17025:2005 which is monitored by the United Kingdom Accreditation Service. Few of the test methods used in UK laboratories are based on standard methods so non-standard procedures are validated through the use of certified reference materials, and continued quality assurance is provided through participation in proficiency testing and interlaboratory comparison exercises. The majority of organisations accredited for radioactivity measurements under ISO 17025:2005 in the UK are environmental monitoring laboratories routinely processing soils, vegetation, air filters and water samples. There are no certified reference materials available in the UK or elsewhere adequately supporting the work of these laboratories. The same is true for the nuclear decommissioning and waste management community that regularly analyses concrete, soil, brick, sludge and oils for activities at Low Level Waste and Intermediate Waste Levels. The nuclear sector has a number of issues regarding availability of isotopic tracers for analysis, supplies of material for nuclear medicine, proficiency testing exercises involving representative matrices and activity levels but the most pressing need is in the area of certified reference materials for validation of methods analysing alpha, beta, and gamma emitting radionuclides.

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Method development for the extraction of naturally occurring radionuclides in marine sediments

Emerson

Young

1995

Science of The Total Environment

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Determination of natural radionuclides in a coastal marine sediment — An analysts' intercomparison exercise

Cited by 6 publications

References 6 publications

Dating of Black Sea sediments from Romanian coast using natural²¹⁰Pb and fallout¹³⁷Cs

Dating of Black Sea sediments from Romanian coast using natural²¹⁰Pb and fallout¹³⁷Cs

Quality assurance in the nuclear sector

Method development for the extraction of naturally occurring radionuclides in marine sediments

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Determination of natural radionuclides in a coastal marine sediment — An analysts' intercomparison exercise

Cited by 6 publications

References 6 publications

Dating of Black Sea sediments from Romanian coast using natural210Pb and fallout137Cs

Dating of Black Sea sediments from Romanian coast using natural210Pb and fallout137Cs

Quality assurance in the nuclear sector

Method development for the extraction of naturally occurring radionuclides in marine sediments

Contact Info

Product

Resources

About

Dating of Black Sea sediments from Romanian coast using natural²¹⁰Pb and fallout¹³⁷Cs

Dating of Black Sea sediments from Romanian coast using natural²¹⁰Pb and fallout¹³⁷Cs