دورية أكاديمية
SEQUENTIAL DETERMINATION OF Zn, Fe, Mg, Ca, Na AND K IN SYNTHETIZED BABASSU FAME BY HIGH RESOLUTION CONTINUUM SOURCE FLAME ATOMIC ABSORPTION SPECTROMETRY
العنوان: | SEQUENTIAL DETERMINATION OF Zn, Fe, Mg, Ca, Na AND K IN SYNTHETIZED BABASSU FAME BY HIGH RESOLUTION CONTINUUM SOURCE FLAME ATOMIC ABSORPTION SPECTROMETRY |
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المؤلفون: | Ana Carla S. Boeira, Leandro Kolling, Samuel J. Santos, Luiz A. M. Fontoura, Márcia Messias da Silva |
المصدر: | Química Nova, Vol 47, Iss 8 (2024) |
بيانات النشر: | Sociedade Brasileira de Química, 2024. |
سنة النشر: | 2024 |
المجموعة: | LCC:Chemistry |
مصطلحات موضوعية: | babassu FAME, microemulsion, trace metals, sequential determination, HR-CS FAAS, Chemistry, QD1-999 |
الوصف: | In this work, babassu FAME samples were synthesized by transesterification reaction under alkaline catalysis with sodium glyceroxide and by two steps process with KOH followed by H2SO4 as catalysts. A sequential multi-element method for determination of Zn, Fe, Mg, Ca, Na and K in synthesized babassu FAME by high resolution continuum source flame atomic absorption spectrometry (HR CS FAAS) was developed. The proposed method is based on a microemulsion formation by mixing the babassu FAME samples with 1-propanol and aqueous phase. The mass proportion of the added components was evaluated through a ternary diagram. External and matrix-matching calibration techniques with inorganic and organic standard were investigated. In the five-level spike-recovery test, satisfactory results were obtained by performing the matrix-matching calibration along with inorganic standard solutions. By using the optimized conditions, limits of detection in the range of 0.002-0.12 mg kg-1 were obtained. Accuracy was attested by the agreement of the results obtained in the analysis of three certified reference materials. By applying the microemulsion system and HR-CS FAAS, the sequential determination of six elements was achieved. Therefore, the proposed method was a suitable alternative for metal determination in babassu FAME samples, with good sensitivities, accuracy, and a wide linear working range. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English Spanish; Castilian Portuguese |
تدمد: | 1678-7064 0100-4042 |
العلاقة: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422024000800202&lng=en&tlng=enTest; http://www.scielo.br/pdf/qn/v47n8/0100-4042-qn-47-08-e-20240031.pdfTest; https://doaj.org/toc/1678-7064Test |
DOI: | 10.21577/0100-4042.20240031 |
الوصول الحر: | https://doaj.org/article/ee54daaf684b44dea559c88fc339496bTest |
رقم الانضمام: | edsdoj.54daaf684b44dea559c88fc339496b |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 16787064 01004042 |
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DOI: | 10.21577/0100-4042.20240031 |