Microwave-assisted digestion followed by parallel electromembrane extraction for trace level perchlorate detection in biological samples
| Autor: | Ahsan M. Shemsi, Mohanad Mubashar Bushra, Mohammed H. Essa, Chanbasha Basheer, Hakimu Nsubuga, Mohammed Hussain Omar |
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| Rok vydání: | 2016 |
| Předmět: |
Coefficient of determination
Clinical Biochemistry Ion chromatography Analytical chemistry 02 engineering and technology 01 natural sciences Biochemistry Analytical Chemistry Ion Perchlorate chemistry.chemical_compound Limit of Detection Animals Microwaves Detection limit Perchlorates Chromatography Chemistry 010401 analytical chemistry Extraction (chemistry) Fishes Reproducibility of Results Membranes Artificial Electrochemical Techniques Cell Biology General Medicine Hydrogen-Ion Concentration Contamination Chromatography Ion Exchange 021001 nanoscience & nanotechnology Ostreidae 0104 chemical sciences Seafood 0210 nano-technology Microwave |
| Zdroj: | Journal of Chromatography B. :1-7 |
| ISSN: | 1570-0232 |
| DOI: | 10.1016/j.jchromb.2016.01.014 |
| Popis: | A simple and parallel electromembrane extraction (pEME) method was developed and used to investigate trace perchlorate ion contamination in seafood. In this method, three different EME units were arranged simultaneously and connected parallel to a single DC power supply. In each unit, the ClO4(-) ions were electro-kinetically extracted from the microwave digested seafood homogenates into 100mM NaOH via a supported liquid membrane (1-Hexanol). Influential extraction parameters were carefully investigated. Under optimized conditions, good linearity with a coefficient of determination (R(2)) of 0.9949 over a concentration range of 1-125μg/g was obtained. The limit of detection (LOD) was 0.04μgg(-1). The methods intraday and inter day precision varied between 4.3-5.6% respectively. Mean recoveries were up to 107% (n=6, RSD=0.7-6.8%). This method was applied to different seafood samples to assess its feasibility for real applications and it exhibited an enhanced sample throughput compatible with both microwave and ion chromatography. |
| Databáze: | OpenAIRE |
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