2006
DOI: 10.1093/rpd/ncl105
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Determination of gamma-emitting radionuclides in the inter-tidal sediments off Balochistan (Pakistan) Coast, Arabian Sea

Abstract: Natural radionuclide contents of 226Ra, 228Ra and (40)K were studied for inter-tidal sediments collected from selected locations off the745 km long Balochistan Coast using HPGe detector based gamma-spectrometry system. The sampling zone extends from the beaches of Sonmiani (near Karachi metropolis) through Jiwani (close to the border of Iran). The natural radioactivity levels detected in various sediment samples range from 14.4 +/- 2.5 to 36.6 +/- 3.8 Bq kg(-1) for 226Ra, 9.8 +/- 1.2 to 35.2 +/- 2.0 Bq kg(-1) … Show more

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Cited by 25 publications
(8 citation statements)
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“…The amount of deposition depends on the survival of the water at the seaside and the concentration of the sand from the seashores at the time. Natural radioactivity in the sand and sediment from the seashore may cause exposure to people living or working near the beach or the tourists who come for a tour of this charming place (Akram, Qureshi, Riffat, Ahmad, & Solaija, 2007). The accumulation of these substances in the marine coastal environment raises many problems concerning the safety of the vital creatures, food chain, and ultimately humans.…”
Section: Introductionmentioning
confidence: 99%
“…The amount of deposition depends on the survival of the water at the seaside and the concentration of the sand from the seashores at the time. Natural radioactivity in the sand and sediment from the seashore may cause exposure to people living or working near the beach or the tourists who come for a tour of this charming place (Akram, Qureshi, Riffat, Ahmad, & Solaija, 2007). The accumulation of these substances in the marine coastal environment raises many problems concerning the safety of the vital creatures, food chain, and ultimately humans.…”
Section: Introductionmentioning
confidence: 99%
“…where C n is the net count rate under the photo peak of each radionuclide, ε is the detector efficiency for the specific gamma line, P γ is the absolute transition probability of the specific γ‐ray, and M s is the mass of the sample (in kg). The lowest limits of detection ( LLD ) were calculated from the following relation [Equation (2)]:, LLD= 4.66 S normalb ε× I normalγ …”
Section: Methodsmentioning
confidence: 99%
“…Where: Cn is the net count rate under the photo‐ peak of each radionuclide, ϵ is the detector efficiency for the specific gamma line, Pγ is the absolute transition probability of the specific γ‐ray and Ms is the mass of the sample (kg). The lowest limits of detection (LLD) were calculated from the following relation: [18,21,22] trueLLD=4.66Sbϵ×Iγ …”
Section: Materials and Analytical Techniquementioning
confidence: 99%