Micro-Scale Preparation of Isotopically Enriched Monmethy lmercury MM Hg
| المصدر: | المجلة الليبية العالمية |
|---|---|
| الناشر: | جامعة بنغازي - كلية التربية بالمرج |
| المؤلف الرئيسي: | Elgazali, Abdelkarem A. (Author) |
| مؤلفين آخرين: | Kobayashi, Yayoi (Co-Author), Feldmann, Jorg (Co-Author), Krupp, Eva M. (Co-Author) |
| المجلد/العدد: | ع12 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2016
|
| الشهر: | نوفمبر |
| الصفحات: | 1 - 15 |
| DOI: |
10.37376/1570-000-012-010 |
| ISSN: |
2518-5845 |
| رقم MD: | 762973 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | EduSearch |
| مواضيع: | |
| كلمات المؤلف المفتاحية: |
Monomethylmercury | species-specific isotope dilution mass spectrometry analysis (SSIDMS) | Sodium tetra (n-propyl) borate | mercury oxide (201HgO) | Dimethylmercury | methylcobalamin co-enzyme
|
| رابط المحتوى: |
عدد مرات التحميل
12
| المستخلص: |
A simple and fast synthesis method for the micro-scale laboratory preparation of isotopic ally enriched monomerthylmercury (MMHg) which is not commercially available has been evaluated and established successfully. This enriched solution is an important standard for species-specific isotope dilution mass spectrometry analysis (SSIDMS) for determination of the true concentration of methylmerury in biological (hair) and environmental samples (soil and sediment). The isotopic ally enriched MMHg has been synthesised from inorganic standard solution prepared from commercially available mercury oxide (201HgO) using methylcobalamin co-enzyme as methylation agent. The synthesis time required is 1 h at 37°C. The product is highly pure, yielded more than 95% as201Hg in MMHg. The proposed method is allows control of unintentional formation of health hazard dimethyl mercury. It is also allows work on a micro-scale to control the use of expensive enriched isotope standard. The synthesised product was analysed using capillary gas chromatography (CGC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) after derivatisation with sodium tetraethyl borate (NaBPr4). The concentration, purity, isotopic composition and stability of synthesized, enriched MMHg have been investigated in order to establish standard protocols for MMHg isotope dilution analysis. |
|---|---|
| ISSN: |
2518-5845 |
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