210Po/210Pb dynamics in relation to zooplankton biomass and trophic conditions during an annual cycle in northwestern Mediterranean coastal waters

Lorda, Jaime Färber; Fowler, Scott W.; Miquel, Juan‐Carlos; Baena, Alessia Rodriguez y; Jeffree, Ross A.

doi:10.1016/j.jenvrad.2012.07.003

Cited by 13 publications

(4 citation statements)

References 30 publications

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“…This value agrees with the fact that 210 Po is more accumulated in zooplankton than 210 Pb, a well-known effect already described in the literature (Mohamed and Kuan, 2005;Carvalho, 2011;Strady et al, 2015). Several authors (Carvalho, 2011;Fowler, 2011;Färber Lorda et al, 2013;Strady et al, 2015) explained the over unity of the 210 Po/ 210 Pb in zooplankton by the fact that 210 Po is bind to amino acids and proteins, and concentrated to high levels within the organisms through Table 4 shows the activities of 210 Po and 210 Pb in zooplankton from different regions. It can be seen that the reported values are within the activity ranges reported in other areas in the world.…”

Section: Resultssupporting

confidence: 90%

“…Zooplankton has been extensively studied in many seas and oceans of the world from radioactivity point of view (Skwarzec & Bojanowski, 1988;Jeffrey et al, 2004;Mohamed and Kuan, 2005;Carvalho, 2011;Meli et al, 2013;Färber Lorda et al, 2013;Faganeli et al, 2016;Kim et al, 2016;. In the Mediterranean Sea, most research has concentrated on its western part where the activity concentration of 210 Po and 210 Pb in zooplankton ranged from 217 to 274 BqKg -1 dw and from 24 to 25 Bq Kg -1 dw., respectively (Strady et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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210Po and 210Pb concentration in zooplankton of the Syrian coastal waters (eastern Mediterranean Sea)

et al. 2019

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210Po and 210Pb activity concentrations and their concentration ratio (CR) in marine zooplankton collected for the first time from the Syrian coastal waters (the eastern Mediterranean Sea) have been determined. The average activity concentrations of 210Po and 210Pb were 243±36 and 26.4±4.3 Bqkg-1 dw. The 210Po/210Pb activity ratio was found to be more than one in all zooplankton samples with an average of 9.2 (8.4 to 10), which indicates that the accumulation of 210Po in zooplankton does not come from the decay of the 210Pb only, and reflects a preferential bioaccumulation of 210Po over 210Pb. In addition, the Concentration Ratio (CR) for 210Po and 210Pb reached 104 and 103, respectively. This study will contribute to the radioecological reference database for zooplankton in the Mediterranean Sea.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

210Po and 210Pb concentration in zooplankton of the Syrian coastal waters (eastern Mediterranean Sea)

et al. 2019

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“…210 Pb is commonly retained in bones while 210 Po is located in soft tissues, with the highest concentrations in liver > kidney > meat [34][35][36][37]. Both 210 Pb and 210 Po have been extensively studied in marine biota [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Elevated levels of 210 Po in most marine biota are considered a potent route of enhanced radiation dose to humans consuming seafood [26,46,[53][54][55].…”

Section: Po Levels In Environmentmentioning

confidence: 99%

210Po in the Environment: Reassessment of Dose to Humans

2023

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Significant efforts have been made by the International Commission on Radiological Protection (ICRP) to establish a reliable basis of equivalent and effective doses due to radionuclides. The ICRP over years has been updating the dose coefficients to include recent developments and make it more realistic. This perspective highlights some issues that warrant updating the methodology used for estimating 210Po dose to humans. The need to underpin these dose coefficients with ever-increasing literature has encouraged us to share the observation on the significant loss of 210Po due to seafood cooking, considering the loss due to cooking warrants changing the factor for the dose from seafood ingestion. Most dose assessment approaches use whole-body concentration, while most 210Po is present in the liver and digestive system that often are not part of the edible portion. The other factor is the extremely high 210Po concentration in aerosols as a result of coal and oil-fired power plants, forest fires, and volcanic activities, especially in the inhalable fraction. The 210Po/210Pb concentration ratio in the Gulf was observed to be between 1.6 and 1.9 in contrast to the 0.1 ratio observed in non-impacted areas. This reassessment of the inhalation dose is also relevant globally due to increasing incidences of forest fires where a much higher than 0.1 210Po/210Pb ratio is expected and will result in a significant inhalation dose.

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“…These results are in agreement with the values of the physiological condition index for mussels sampled in Butrinti Lagoon. Indeed, several studies [22,23] show that high biological activities of phytoplankton and zooplankton can increase the removal of 210 Po from seawater and transfer to living organisms.…”

Section: Activity Concentration Of 210 Po In Mussels From Butrinti Lakementioning

confidence: 99%

Determination of activity concentration of 210Po in mussels (Mytilus galloprovincialis) from Butrinti Lagoon, Albanian Ionian coast

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Bylyku

Xhixha

et al. 2015

J Radioanal Nucl Chem

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This study reports the activity concentration of 210 Po in mussels (Mytilus galloprovincialis) from Butrinti Lagoon. The concentrations of 210 Po in mussels collected in spring are found to be approximately twice higher than those collected in autumn, respectively 389.5 ± 16.9 and 227.4 ± 5.0 Bq kg -1 (d.w.). Hypothesis on factors affecting 210 Po concentration in mussels are raised based on available studies. The annual effective ingestion dose due to 210 Po intake was found to be comparable to other studies and varying from 74.2 ± 3.4 to 36.5 ± 1.0 lSv y -1 .

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210Po/210Pb dynamics in relation to zooplankton biomass and trophic conditions during an annual cycle in northwestern Mediterranean coastal waters

Cited by 13 publications

References 30 publications

210Po and 210Pb concentration in zooplankton of the Syrian coastal waters (eastern Mediterranean Sea)

210Po and 210Pb concentration in zooplankton of the Syrian coastal waters (eastern Mediterranean Sea)

210Po in the Environment: Reassessment of Dose to Humans

Determination of activity concentration of 210Po in mussels (Mytilus galloprovincialis) from Butrinti Lagoon, Albanian Ionian coast

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