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Plutonium, (90)Sr and (241)Am in human bones from southern and northeastern parts of Poland.

Brudecki K, Mietelski JW, Anczkiewicz R, Golec EB, Tomankiewicz E, Kuźma K, Zagrodzki P, Golec J, Nowak S, Szczygieł E, Dudkiewicz Z - J Radioanal Nucl Chem (2013)

Bottom Line: Surprisingly enough, and to the contrary to our expectations we could not see any significant differences in either Pu activity or Pu mass ratio between the studied populations.In both populations Chernobyl fraction proved marginal.The results on (90)Sr and (241)Am confirm similarities between the two examined groups.

View Article: PubMed Central - PubMed

Affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland.

ABSTRACT

The paper presents the results of our study on (238)Pu, (239)Pu, (240)Pu, (241)Am and (90)Sr concentration in human bones carried out on a set of 88 individual samples of central Europe origin. Bone tissue samples were retrieved under surgery while introducing hip joint implants. The conducted surgeries tend to cover either southern or northeastern parts of Poland. While for the southern samples only global fallout was expected to be seen, a mixed global and Chernobyl fallout were to be reflected in the others. Alpha spectrometry was applied to obtain activity concentration for (238)Pu, (239+240)Pu, (241)Am, while liquid scintillation spectrometry for (90)Sr and mass spectrometry to receive (240)Pu/(239)Pu mass ratio. Surprisingly enough, and to the contrary to our expectations we could not see any significant differences in either Pu activity or Pu mass ratio between the studied populations. In both populations Chernobyl fraction proved marginal. The results on (90)Sr and (241)Am confirm similarities between the two examined groups.

No MeSH data available.


Related in: MedlinePlus

Patients’ age and 241Am concentration correlation
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Fig3: Patients’ age and 241Am concentration correlation

Mentions: Next, we tried to find correlation between the studied isotopes concentration and the patients age. The obtained correlation results are presented in Figs. 2, 3 and 4. For Pu and Am one can see an increasing trend, the older the person was, the higher activity Pu and Am concentration were found. This was observed already for a smaller group of 28 analysed human bone samples [13]. On the contrary, for Sr such a trend could not be observed. As the main pathway of Pu is inhalation, the increasing trend may suggest that the observed Pu was systematically accumulated over the patient‘s life. On the other hand, in Fig. 5 we can see a difference between a child patient at 1970 and the rest of the investigated people. It is generally known that after 1963 the USA, Soviet Union and UK stopped their atmospheric weapon tests, thus Pu concentration in air kept falling down smoothly over the next years by orders of magnitude. This difference can be explained by much less lungs air exchange efficiency in children. Moreover, the increase in the activity concentration with age can be also interpreted in terms of losing bones mass while aging—the bone mass is in the denominator and keeps diminishing. Therefore, the increasing trend is of solely spurious nature as the observed concentration had been accumulated mainly in the fifties and sixties of the last century, when the number of atmospheric tests reached its maximum.Fig. 2


Plutonium, (90)Sr and (241)Am in human bones from southern and northeastern parts of Poland.

Brudecki K, Mietelski JW, Anczkiewicz R, Golec EB, Tomankiewicz E, Kuźma K, Zagrodzki P, Golec J, Nowak S, Szczygieł E, Dudkiewicz Z - J Radioanal Nucl Chem (2013)

Patients’ age and 241Am concentration correlation
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4514605&req=5

Fig3: Patients’ age and 241Am concentration correlation
Mentions: Next, we tried to find correlation between the studied isotopes concentration and the patients age. The obtained correlation results are presented in Figs. 2, 3 and 4. For Pu and Am one can see an increasing trend, the older the person was, the higher activity Pu and Am concentration were found. This was observed already for a smaller group of 28 analysed human bone samples [13]. On the contrary, for Sr such a trend could not be observed. As the main pathway of Pu is inhalation, the increasing trend may suggest that the observed Pu was systematically accumulated over the patient‘s life. On the other hand, in Fig. 5 we can see a difference between a child patient at 1970 and the rest of the investigated people. It is generally known that after 1963 the USA, Soviet Union and UK stopped their atmospheric weapon tests, thus Pu concentration in air kept falling down smoothly over the next years by orders of magnitude. This difference can be explained by much less lungs air exchange efficiency in children. Moreover, the increase in the activity concentration with age can be also interpreted in terms of losing bones mass while aging—the bone mass is in the denominator and keeps diminishing. Therefore, the increasing trend is of solely spurious nature as the observed concentration had been accumulated mainly in the fifties and sixties of the last century, when the number of atmospheric tests reached its maximum.Fig. 2

Bottom Line: Surprisingly enough, and to the contrary to our expectations we could not see any significant differences in either Pu activity or Pu mass ratio between the studied populations.In both populations Chernobyl fraction proved marginal.The results on (90)Sr and (241)Am confirm similarities between the two examined groups.

View Article: PubMed Central - PubMed

Affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland.

ABSTRACT

The paper presents the results of our study on (238)Pu, (239)Pu, (240)Pu, (241)Am and (90)Sr concentration in human bones carried out on a set of 88 individual samples of central Europe origin. Bone tissue samples were retrieved under surgery while introducing hip joint implants. The conducted surgeries tend to cover either southern or northeastern parts of Poland. While for the southern samples only global fallout was expected to be seen, a mixed global and Chernobyl fallout were to be reflected in the others. Alpha spectrometry was applied to obtain activity concentration for (238)Pu, (239+240)Pu, (241)Am, while liquid scintillation spectrometry for (90)Sr and mass spectrometry to receive (240)Pu/(239)Pu mass ratio. Surprisingly enough, and to the contrary to our expectations we could not see any significant differences in either Pu activity or Pu mass ratio between the studied populations. In both populations Chernobyl fraction proved marginal. The results on (90)Sr and (241)Am confirm similarities between the two examined groups.

No MeSH data available.


Related in: MedlinePlus