Application of proton induced X-ray emission to the qualitative and quantitative analysis of iodine in biological samples

Ishikawa, M.; Izawa, G.; Omori, Takashi; Muramatsu, Y.

doi:10.1007/bf02036322

Journal of Radioanalytical and Nuclear Chemistry, Articles

1985

DOI: 10.1007/bf02036322

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Application of proton induced X-ray emission to the qualitative and quantitative analysis of iodine in biological samples

M. Ishikawa¹,

G. Izawa

Takashi Omori

et al.

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1998

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Cited by 3 publications

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“…However, few papers describing detailed studies of iodine stability in the preparation and analysis process are available. Belling et al 5,6 studied the recovery of iodine in dry, alkali ash and acid digestion, Zaichick and Zaichick 7 and Ishikawa et al 8 studied the loss of iodine in lyophilisation of biological samples and Heurtebise and Ross 9 and Byrne et al 10,11 investigated the loss of iodine in neutron irradiation. However, in all these papers, the analyte investigated was total iodine in the samples, and no study of the stability of different chemical species of iodine in the sample preparation process was reported.…”

mentioning

confidence: 99%

A study of iodine loss during the preparation and analysis of samples using 131I tracer and neutron activation analysis

Feng¹,

Qian²,

Chai³

et al. 1998

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The recoveries of various species of iodine, such as I 2 , IO 3 2 and organic iodine, in the procedures of acid digestion, ashing, freeze-drying, evaporation drying and neutron irradiation were studied using 131 I tracer and instrumental neutron activation analysis. The recoveries of iodine were over 99% after drying at room temperature and 60-80 °C for various iodine species in all kinds of media. The organic iodine in various media, I 2 and IO 3 2 in biological materials and IO 3 2 in alkaline solution were not lost after freeze-drying, whereas I 2 in aqueous solution and IO 3 2 in acidic and neutral solution were significantly lost. The recoveries of iodine were different under various acid digestion conditions. Under the optimum conditions, more than 96% of iodine remained in the digestion solution. With ashing, the recovery of iodine was less than 2%. Addition of alkali to the samples can significantly improve the iodine recovery, but the ashing is incomplete in this case. Only 90% of iodine was recovered using alkali ashing at 650 °C. Neutron irradiation did not cause any loss of iodine.

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mentioning

confidence: 99%

A study of iodine loss during the preparation and analysis of samples using 131I tracer and neutron activation analysis

Feng¹,

Qian²,

Chai³

et al. 1998

Analyst

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A new internal standard method coupled with the standard addition method for proton-induced X-ray emission analysis and its application determination of Cu, Zn, Rb and Sr in biological materials

Yagi

Izawa

Omori

et al. 1987

Journal of Radioanalytical and Nuclear Chemistry, Articles

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Annual variation of stable iodine in brown sea algae (hijiki, Hizikia fusiforme)

Ishikawa¹,

Kitao²,

Izawa

et al. 1987

Nuclear Instruments and Methods in Physics Research Section B:

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Application of proton induced X-ray emission to the qualitative and quantitative analysis of iodine in biological samples

Cited by 3 publications

References 2 publications

A study of iodine loss during the preparation and analysis of samples using 131I tracer and neutron activation analysis

A study of iodine loss during the preparation and analysis of samples using 131I tracer and neutron activation analysis

A new internal standard method coupled with the standard addition method for proton-induced X-ray emission analysis and its application determination of Cu, Zn, Rb and Sr in biological materials

Annual variation of stable iodine in brown sea algae (hijiki, Hizikia fusiforme)

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