Speciation and preconcentration of chromium in real samples by magnetic polythiophene nanoparticle solid-phase extraction (SPE) coupled with microsampling injection – flame atomic absorption spectrometry (FAAS)

Autor: Aysen Hol, Nilgün Elyas Sodan, Sukru Gokhan Elci, Latif Elci, Aslıhan Arslan Kartal
Rok vydání: 2021
Předmět:
inorganic chemicals
Microextraction
Sorbent
General Chemical Engineering
media_common.quotation_subject
water
chemistry.chemical_element
Nanoparticle
02 engineering and technology
01 natural sciences
soil
flame atomic absorption spectrometry (MIS-FAAS)
Mercury Speciation
chemistry.chemical_compound
Chromium
Adsorption
Flame atomic absorption spectrometry
preconcentration
otorhinolaryngologic diseases
Solid phase extraction
Instrumentation
General Environmental Science
media_common
microsample injection system –
Nanocomposite
Environmental-Samples
010401 analytical chemistry
Extraction (chemistry)
technology
industry
and agriculture
hair
Soil Samples
Coated Fe3o4 Nanoparticles
021001 nanoscience & nanotechnology
urine
0104 chemical sciences
Speciation
speciation
chemistry
Polythiophene
Carbon Nanotubes
chromium
strawberry
0210 nano-technology
Copper
Nuclear chemistry
DOI: 10.6084/m9.figshare.14597707.v1
Popis: Magnetic solid-phase extraction was evaluated using polythiophene nanoparticles (Fe3O4@PTh) as the adsorbent for chromium speciation from water samples and total chromium preconcentration from food, biological, and soil samples. Chromium concentrations were determined by microsample injection system – flame atomic absorption spectrometry (MIS-FAAS). Chromium speciation was achieved with selective adsorption of Cr(III) in the presence of Cr(VI) by Fe3O4@PTh from pH 6.5 to 10.0. Total chromium was preconcentrated after the reduction of Cr(VI) to Cr(III). The linear range, detection limit, enrichment factor, and repeatability of the optimized method for Cr(III) in aqueous solution were 4-60 µg L−1, 1.3 µg L−1, 124.7, and 2.2%, respectively. The method was validated by analyzing SPS-WW2 Batch 114, NCS DC 78302 Tibet soil, and LGC7162 strawberry leaves as standard reference materials (SRMs). The results are in good agreement with the certified values. Good recovery, precision, and relative error values were obtained for chromium in real samples by the optimized method.
Databáze: OpenAIRE
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