التفاصيل البيبلوغرافية
| العنوان: |
Determination of Cadmium in Water Samples by Automated Flow-Batch Cloud Point Extraction (CPE) Hyphenated to High-Resolution Continuum Source Flame Atomic Spectrometry (HR-CS FAAS) |
| المؤلفون: |
Naomi Akiba (11306641), Rodrigo S. N. Mancini (5889935), Alexandre Zatkovskis Carvalho (11306644), Ivanise Gaubeur (3752377) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Medicine, Sociology, Cancer, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Cadmium, cloud point extraction, flow-batch analysis, high-resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS), metal pre-concentration |
| الوصف: |
A computer-controlled multicommuted flow-batch system is reported that allows for the online cloud point extraction of metal ions followed by high-resolution continuum source flame atomic absorption spectrometric (HR-CS GFAAS) detection. This approach combines reduced sample and reagent consumption and a short analysis time with the increased precision and sensitivity characteristic of flow-batch analysis and modern extraction techniques. As proof of concept, cadmium in aqueous solutions was determined by the formation of a hydrophobic complex [Cd(PAN) 2 ]. Parameters related to complex formation (pH, pyridyl-azo-naphthol-PAN concentration, complexation time), cloud point extraction (Triton X-114 concentration, electrolyte composition, rich phase trapping), and the multicommuted flow-batch system (flow rates, timing control) were optimized. A small column packed with hydrophobic cotton was used as the interface between the extraction and detection stages to stack the cadmium-containing rich phase in a short plug. Optimized parameters led to a 5.0 to 75.0 µg L −1 linear range, 1.3 µg L −1 limit of detection, 4.3 µg L −1 limit of quantification and 1.8% coefficient of variation (n = 12). Accuracy was evaluated by analyzing a certified reference material EP-H (drinking water) and by recovery tests employing tap water, groundwater, mineral water, and reuse water samples. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Determination_of_Cadmium_in_Water_Samples_by_Automated_Flow-Batch_Cloud_Point_Extraction_CPE_Hyphenated_to_High-Resolution_Continuum_Source_Flame_Atomic_Spectrometry_HR-CS_FAAS_/15773830Test |
| DOI: |
10.6084/m9.figshare.15773830.v1 |
| الإتاحة: |
https://doi.org/10.6084/m9.figshare.15773830.v1Test |
| حقوق: |
CC BY 4.0 |
| رقم الانضمام: |
edsbas.6686ECDC |
| قاعدة البيانات: |
BASE |
