One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS
BACKGROUND Boron is an important trace element in high calcium biological samples, such as teeth and bones. Boron content and isotopic composition are important environmental tracers. However, the calcium content in biological samples is relatively high (>90%), and it is impossible to separate an...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2020-05-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201909290141 |
| _version_ | 1797953827467427840 |
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| author | LI Zi-xia LU Hai |
| author_facet | LI Zi-xia LU Hai |
| author_sort | LI Zi-xia |
| collection | DOAJ |
| description | BACKGROUND Boron is an important trace element in high calcium biological samples, such as teeth and bones. Boron content and isotopic composition are important environmental tracers. However, the calcium content in biological samples is relatively high (>90%), and it is impossible to separate and enrich boron isotopes by using the conventional boron-special resin separation process. OBJECTIVES To establish an efficient method for treatment of boron isotopes in high calcium samples. METHODS An acetic acid-ammonium acetate buffer (pH=6.0) was used as a resin regeneration solution to replace ammonia. The adsorption pH of boron resin, boron-special resin (Amberlite IRA 743) was dropped from 8-9 to 6.0, thus the precipitation was avoided during digestion of the high calcium biological samples under alkaline conditions. Only one step of ion exchange is necessary to enrich boron in biological samples. The boron isotope of samples after separation was determined by multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) using a standard-sample-standard bracketing method. RESULTS A one-step ion exchange method was used for separation and enrichment. The analytical accuracy of MC-ICP-MS for the determination of boron isotopes in teeth was less than 0.42‰, reaching the same level as other separation and determination methods. CONCLUSIONS This method is not only suitable for boron isotope tracing of high calcium biological samples such as teeth and bones, but also provides a reference for the analysis of high calcium soil and marine sediment. |
| first_indexed | 2024-04-10T23:08:13Z |
| format | Article |
| id | doaj.art-c7502cc07b97403a962cdef5caaec983 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:08:13Z |
| publishDate | 2020-05-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-c7502cc07b97403a962cdef5caaec9832023-01-13T09:35:00ZengScience Press, PR ChinaYankuang ceshi0254-53572020-05-0139341742410.15898/j.cnki.11-2131/td.201909290141yk201909290141One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MSLI Zi-xia0LU Hai1School of Stomatology, Xi'an Medical University, Xi'an 710021, ChinaNational Institute of Metrology, Beijing 100013, ChinaBACKGROUND Boron is an important trace element in high calcium biological samples, such as teeth and bones. Boron content and isotopic composition are important environmental tracers. However, the calcium content in biological samples is relatively high (>90%), and it is impossible to separate and enrich boron isotopes by using the conventional boron-special resin separation process. OBJECTIVES To establish an efficient method for treatment of boron isotopes in high calcium samples. METHODS An acetic acid-ammonium acetate buffer (pH=6.0) was used as a resin regeneration solution to replace ammonia. The adsorption pH of boron resin, boron-special resin (Amberlite IRA 743) was dropped from 8-9 to 6.0, thus the precipitation was avoided during digestion of the high calcium biological samples under alkaline conditions. Only one step of ion exchange is necessary to enrich boron in biological samples. The boron isotope of samples after separation was determined by multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) using a standard-sample-standard bracketing method. RESULTS A one-step ion exchange method was used for separation and enrichment. The analytical accuracy of MC-ICP-MS for the determination of boron isotopes in teeth was less than 0.42‰, reaching the same level as other separation and determination methods. CONCLUSIONS This method is not only suitable for boron isotope tracing of high calcium biological samples such as teeth and bones, but also provides a reference for the analysis of high calcium soil and marine sediment.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201909290141biological samplesboron isotopeion exchangeboron-special resinacetate-ammonium acetate buffermulti-collector inductively coupled plasma-mass spectrometry |
| spellingShingle | LI Zi-xia LU Hai One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS Yankuang ceshi biological samples boron isotope ion exchange boron-special resin acetate-ammonium acetate buffer multi-collector inductively coupled plasma-mass spectrometry |
| title | One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS |
| title_full | One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS |
| title_fullStr | One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS |
| title_full_unstemmed | One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS |
| title_short | One-step Ion-exchange Separation and Measurement of Boron Isotope Ratios in High Calcium Biological Samples with by MC-ICP-MS |
| title_sort | one step ion exchange separation and measurement of boron isotope ratios in high calcium biological samples with by mc icp ms |
| topic | biological samples boron isotope ion exchange boron-special resin acetate-ammonium acetate buffer multi-collector inductively coupled plasma-mass spectrometry |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201909290141 |
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