Determination of Arsenic(III) and Total Arsenic at Trace Levels in Baby Food Samples via a New Functionalized Magnetic Graphane Oxide Nanocomposite

• Published in: Biological trace element research 2021-12, Vol.199 (12), p.4856-4866
• Main Authors: Saçmacı, Şerife, Saçmacı, Mustafa
• Format: Article
• Language: English
• Subjects: adsorbents; Adsorption; Analytical methods; Arsenic; Ascorbic acid; Baby foods; Biochemistry; Biomedical and Life Sciences; Biotechnology; Chemical reduction; detection limit; Food; Food safety; Graphite; Health policy; Infant Food; infant foods; Iron oxides; Life Sciences; Magnetic field; Magnetic fields; Magnetic Phenomena; Nanocomposites; Nutrition; Oncology; Oxides; pH effects; Reagents; reference standards; Solid Phase Extraction; standard deviation; Tiopronin; Trace levels
• ISSN: 0163-4984; 1559-0720; 1559-0720
• DOI: 10.1007/s12011-021-02754-7

Baby food safety is an essential issue in health policy. For this reason, a simple, cheap, and fast analytical procedure to developed arsenic(III) and total arsenic determination in baby food samples using functionalized magnetic graphane oxide nanocomposite. A new nanocomposite anchored of tiopronin (TSH) magnetic graphane oxide (GO–PG4@Fe 3 O 4 -TSH) was first synthesized/characterized and used as an adsorbent to determine arsenic(III) and total arsenic for baby food samples. Arsenic(III) was directly determined on GO–PG4@Fe 3 O 4 -TSH nanocomposite at pH 4.5. The determination of total arsenic used KI and L( +) ascorbic acid solution as reducing reagents. The parameters influential on arsenic(III) determination in the baby food samples including the sample’s pH, adsorption time, amount of GO–PG4@Fe 3 O 4 -TSH, eluent type, sample volume, reducing reagent type and amount, and also foreign ion effect were investigated. The GO–PG4@Fe 3 O 4 -TSH carrying As(III) could easily be separated from baby food samples via applying an external magnetic field. The detection limit for arsenic(III) was found as 0.11 μg L −1 , while the limit of quantification values was computed as 0.37 μg L −1 . The precision of results, expressed as relative standard deviation, was always lower than 1.6% at 1 mg L −1 As(III) levels. The accuracy of this method was confirmed by analysis of certified reference material. The method was successively applied to determine arsenic(III) and total arsenic in baby food samples.