دورية أكاديمية
أعرض في EDS

Speciation and Determination of Selenium Oxyanions at the Drinking Water Pollution Concentration Levels

التفاصيل البيبلوغرافية
العنوان: Speciation and Determination of Selenium Oxyanions at the Drinking Water Pollution Concentration Levels
المؤلفون: Kyriaki Kalaitzidou, Evangelia Bidiou, Anastasios Zouboulis, Manassis Mitrakas
المصدر: Separations, Vol 8, Iss 3, p 27 (2021)
بيانات النشر: MDPI AG, 2021.
سنة النشر: 2021
المجموعة: LCC:Physics
LCC:Chemistry
مصطلحات موضوعية: Se(IV)-Se(VI) speciation, separation and determination, adsorption, iron oxy-hydroxides, natural waters, Physics, QC1-999, Chemistry, QD1-999
الوصف: The research on selenium presence in water resources has revealed the need to determine the respective aquatic species. As selenium oxyanions SeO32− (SeIV) and SeO42− (SeVI) predominate in natural waters, their determination is essential, mainly due to different ecotoxicity properties, as well as to different removal options from relevant-polluted waters. This study focuses on the SeO32−/SeO42− speciation/separation and determination through the selective adsorption of SeO32− only onto specific iron oxy-hydroxides (FeOOHs). For this purpose, the laboratory prepared FeOOHs examined along with the commercially available relevant material (Bayoxide), which was found to present optimum results for the speciation of selenium oxyanions, at the low concentration range 10–100 μg/L, using a dose of 0.5 g/L of adsorbent and gently stirring for 30 min at the usually encountered pH value of 7.3 ± 0.2. Moreover, the relevant experiments showed that the other major ions Cl−, HCO3−, NO3−, SO42−, Ca2+, Mg2+, Na+, possibly found in most natural waters at the concentration range 0–200 mg/L, as well as silicon, total organic carbon (TOC) of natural organic matter (NOM) and iron at the concentration range 0–50 mg/L, 0–5 mg/L and 0–1 mg/L, respectively, did not interfere with the selective adsorption of Se(IV). Furthermore, the most important advantage of this selective speciation method is its implementation/combination with all commonly applied analytical methods for the determination of total selenium.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2297-8739
Relation: https://www.mdpi.com/2297-8739/8/3/27; https://doaj.org/toc/2297-8739
DOI: 10.3390/separations8030027
URL الوصول: https://doaj.org/article/58bb50e0913046b5b24b4d8517661e50
رقم الأكسشن: edsdoj.58bb50e0913046b5b24b4d8517661e50
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:22978739
DOI:10.3390/separations8030027