Determination of 90Sr Accumulation in Human Teeth

Recep ACAR; Orhan ACAR

Makale detayları

Determination of 90Sr Accumulation in Human Teeth

Yazarlar:

Recep ACAR | Orhan ACAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2004 Vol.28 Issue 1, pp.67-74

Belge Tipi:

Makale

Yayın Tarihi:

12/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000729415

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

The accumulation of 90Sr in decayed or exfoliated human  teeth was investigated by ultra low level beta counting.  Fuming  nitric acid and the necessary carriers and reagents were used for  dissolving the samples, and the separation and purification of  90Sr.  The Ca contents of samples were determined by flame atomic  absorption spectrometry with Zeeman-effect background correction.  A  mixture of K and La used as a matrix modifier was found to be  preferable for the determination of Ca in samples.  The optimum  concentration and concentration ratio of K and La on the absorbance of  Ca in the NIST certified reference material, bone ash 1400 solution  were determined.  The reliability of the measurements was tested by  analyzing 90Sr in the IAEA certified reference material, animal  bone, and Ca in bone ash 1400, by adding a K + La mixture.  Recoveries  are greater than 95% and relative standard deviations are lower than  10%.  The detection limits of 90Sr and Ca are 0.9 Bq/kg sample  and 12.3 m g/L, respectively.

 

The accumulation of 90Sr in decayed or exfoliated human  teeth was investigated by ultra low level beta counting.  Fuming  nitric acid and the necessary carriers and reagents were used for  dissolving the samples, and the separation and purification of  90Sr.  The Ca contents of samples were determined by flame atomic  absorption spectrometry with Zeeman-effect background correction.  A  mixture of K and La used as a matrix modifier was found to be  preferable for the determination of Ca in samples.  The optimum  concentration and concentration ratio of K and La on the absorbance of  Ca in the NIST certified reference material, bone ash 1400 solution  were determined.  The reliability of the measurements was tested by  analyzing 90Sr in the IAEA certified reference material, animal  bone, and Ca in bone ash 1400, by adding a K + La mixture.  Recoveries  are greater than 95% and relative standard deviations are lower than  10%.  The detection limits of 90Sr and Ca are 0.9 Bq/kg sample  and 12.3 m g/L, respectively.

Makale detayları

Determination of 90Sr Accumulation in Human Teeth

Yazarlar: Recep ACAR | Orhan ACAR

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2004 Vol.28 Issue 1, pp.67-74

Belge Tipi: Makale

Yayın Tarihi: 12/2003

Belge Dili: Türkçe

Document ID (Org No.): 2000729415

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Recep ACAR | Orhan ACAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2004 Vol.28 Issue 1, pp.67-74

Belge Tipi:

Makale

Yayın Tarihi:

12/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000729415

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527