Separation and determination of lead in human urine and water samples based on thiol functionalized mesoporous silica nanoparticles packed on cartridges by micro column fast micro solid-phase extraction
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 504
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شناسه ملی سند علمی:
JR_AMECJ-2-3_002
تاریخ نمایه سازی: 3 اسفند 1398
چکیده مقاله:
An efficient method based on thiol functionalized mesoporous silica nanoparticles (HS-MSNPs) was used for extraction of lead ions (PbII) from urine and water samples by packed column micro solid phase extraction (PC-MSPE). By procedure, 15 mg of HS-MSNPs packed in syringe cartridges (SC, 5mL) with cellulose membrane and pH adjusting at 5.5-6.5. Then, the lead of urine and water sample was efficiently extracted on HS-MSNPs after pushing the plunger of a syringe. Finally, the Pb (II) was back-extractedwith inorganic acid solution and the remained solution determined by electrothermal atomic absorption spectrometry (ET-AAS). By optimization conditions, the enrichment factor, LOD, linear range and RSD% was obtained 24.8, 0.04 μg L-1, 0.12-5.5 μg L-1 and less than 5%, respectively for 5 mL of urine samples. The validation was confirmed by spiking of real samples and using certified reference material (CRM, NIST) in water and urine sample
کلیدواژه ها:
Lead ، Human sample ، Thiol-mesoporous silicananoparticles ، Packed column micro solid phase ، extraction ، Electrothermal atomic absorptionspectrometry
نویسندگان
Maling gou
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu ۶۱۰۰۴۱, China.Department of Thoracic Oncology, Cancer Center, West China Hospital, Medical School, Si
Baharak Bahrami Yarahmadi
Occupational Health Engineering Department, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran