Aluminum separation from drinking water and serum samples based on djenkolic acid immobilized on the multi walled carbon nanotubes by ultrasound-assisted dispersive micro solid phase extraction
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 50
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شناسه ملی سند علمی:
JR_AMECJ-3-2_004
تاریخ نمایه سازی: 14 آذر 1402
چکیده مقاله:
A new method for aluminum extraction from drinking water
and human serum samples was used by djenkolic acid (DJKA)
immobilized on multi walled carbon nanotubes (MWCNTs-DJKA).
By procedure, the mixture of ۲۵ mg of MWCNTs-DJKA sorbent
and hydrophobic ionic liquid ([OMIM][PF۶]) were dispersed with
ultrasonic bath in ۱۰ mL of drinking water and serum samples for ۱۰
min at pH=۵. The aluminum ions were extracted based on MWCNTs-
DJKA sorbent in liquid phase by ultrasound-assisted dispersive micro
solid phase extraction (USA-D-μ-SPE). After centrifuging, the Al
(III) was separated from liquid phase by ionic liquid phase in bottom
of centrifuge PVC tube. Finally, the Al (III) were back-extracted
from sorbent/IL in acidic pH and measured by electrothermal atomic
absorption spectrometry (ET-AAS). In optimized study, LOD,
LOQ, the linear range, the working range and the enrichment factor
were obtained ۰.۱ μg L−۱, ۰.۳ μg L−۱, ۰.۳-۱۲.۸ μg L−۱, ۰.۳-۳۰.۷ μg
L−۱ and ۹.۹۲, respectively (RSD< ۵%). The adsorption capacity of
the MWCNTs-DJKA sorbent was obtained in batch system. Based
on proposed procedure, the mean concentrations of aluminum in
drinking waters and serum samples were lower than world health
organization (WHO) and American conference of governmental
industrial hygienists (ACGIH) references. The method was validated
by spiking samples and standard reference materials (SRM) in water
and human biological samples.
کلیدواژه ها:
Aluminum ، Poly methyl ether thiol sorbent ، Dispersive micro solid phase extraction ، Waters ، Human serum ، Electrothermal atomic absorption spectrometry
نویسندگان
Farnaz Hosseini
Islamic Azad University, Tehran Medical Branch, Iran
Sara Davari
Islamic Azad University, Tehran Medical Branch, Iran