Adsorption and determination of Lead in water and human urine samples based on Zn۲(BDC)۲(DABCO) MOF as polycaprolactone nanocomposite by suspension micro solid phase extraction coupled to UV–Vis spectroscopy
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 76
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شناسه ملی سند علمی:
JR_AMECJ-4-3_007
تاریخ نمایه سازی: 14 آذر 1402
چکیده مقاله:
Today, the safety of water resource is the most important challenges
which was reported by health and environment organizations.
Water pollution can be created by hazardous contaminants of
environmental pollutions. Lead as a heavy metal has carcinogenic
effects in humans. Metal organic framework (MOF) is a highly
porous material with different application. The Zn۲(BDC)۲(DABCO)
is a good candidate of MOF based on zinc metal (Zn-MOF) with
potential adsorption/extraction. In this work, Zn۲(BDC)۲(DABCO)
MOF as polycaprolactone (PCL) nanocomposite were applied for
lead adsorption/extraction from ۵۰ mL of aqueous solution by ultraassisted
dispersive suspension-micro-solid phase extraction procedure
(USA-S- μ-SPE) at pH=۸. The samples were characterized by the
FTIR, the XRD analysis, the FE-SEM and the BET surface area.
The effect of parameters was investigated on lead absorption before
determined by UV–Vis spectroscopy. The linear range, the detection
limit (LOD) and enrichment factor of adsorbent were obtained ۰.۰۵-۱
mg L-۱, ۰.۲۵ μg L-۱ and ۴۸.۷, respectively (r = ۰.۹۹۹۲, RSD%=۳.۶۵).
The absorption capacity of Zn۲(BDC)۲(DABCO) MOF for ۵۰ mg L-۱
of standard lead solution were obtained ۱۳۳.۸ mg g-۱ for ۰.۲۵ g of
adsorbent. The results indicate that this nanocomposite can have a
good potential to develop different adsorbents.
کلیدواژه ها:
Lead ، Metal organic framework ، Polycaprolactone ، Nanocomposite ، Adsorption ، Suspension-micro-solid phase extraction procedure
نویسندگان
Negar Motakef Kazemi
Department of Medical Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
Masomeh Odar
Department of Nanochemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran