scholarly journals Choline Chloride–Oxalic Acid as a Deep Eutectic Solvent–Based Innovative Digestion Method for the Determination of Selenium and Arsenic in Fish Samples

2018 ◽  
Vol 101 (4) ◽  
pp. 1183-1189 ◽  
Author(s):  
Abdul Haleem Panhwar ◽  
Mustafa Tuzen ◽  
Tasneem Gul Kazi

Abstract An innovative and effective digestion method based on choline chloride (ChCl)–oxalic acid (Ox) deep eutectic solvent (DES) was proposed for the determination of Se and As in fish samples via electrothermal atomic absorption spectrometry (ETAAS). The impacts of different variables, including the composition and volume of ChCl–Ox, temperature, and acid addition, on analyte recovery were studied for optimization. In this procedure, an 80 mg sample was dissolved in a 1:2 molar ratio of ChCl–Ox at 105°C for 40 min, with the subsequent addition of 4.0 mL HNO3 (1.0 M) and further heating at the same temperature for about 5 min. Next, centrifugation was applied, and the supernatant solution was filtered, diluted to a known volume, and measured by ETAAS. The accuracy of the developed method was tested using a Standard Reference Material (NIST SRM 1946 Lake Superior Fish Tissue). The proposed DES-based digestion method was successfully applied to the simultaneous extraction of Se and As from fish samples.

2018 ◽  
Vol 101 (2) ◽  
pp. 593-600 ◽  
Author(s):  
Rizwan Ali Zounr ◽  
Mustafa Tuzen ◽  
Muhammad Yar Khuhawar

Abstract In present study, we proposed the application of a deep eutectic solvent (DES) made up of choline chloride (ChCl) and oxalic acid (Ox) for the dissolution of different edible mushroom samples for the determination of selenium (Se) and arsenic (As) ions. Therefore, an innovative, green, novel, and inexpensive method based on ChCl–Ox as the DES was developed for the determination of Se and As ions in mushroom species by graphite furnace-atomic absorption spectrometry. The important analytical parameters were also optimized. The LODs for Se and As ions were found to be 0.32 and 0.50 µg/L, respectively. The LOQs for Se and As ions were found to be 1.06 and 1.65 µg/L, respectively. The RSD was observed to be less than 5% for both analyte ions. The accuracy of the developed method was confirmed by analyzing mushroom powder Certified Reference Material CS-M-3 (Boletus edulis). The developed technique was effectively useful for the determination of Se and As ions in different species of mushroom samples from Turkey.


2013 ◽  
Vol 762 ◽  
pp. 61-67 ◽  
Author(s):  
Emadaldin Habibi ◽  
Kamal Ghanemi ◽  
Mehdi Fallah-Mehrjardi ◽  
Ali Dadolahi-Sohrab

2013 ◽  
Vol 5 (22) ◽  
pp. 6416 ◽  
Author(s):  
Ariane V. Zmozinski ◽  
Leonardo D. Passos ◽  
Isabel C. F. Damin ◽  
Maria Aparecida B. Espírito Santo ◽  
Maria G. R. Vale ◽  
...  

2017 ◽  
Vol 9 (39) ◽  
pp. 5741-5748 ◽  
Author(s):  
Farzaneh Rastegarifard ◽  
Kamal Ghanemi ◽  
Mehdi Fallah-Mehrjardi

The process of dissolution of marine fish samples in DES followed by a fast (∼5 s) and complete digestion in nitric acid for determination of Hg.


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