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Gold Nanoparticles Grafted Manganese Doped Fe3o4 Nanoparticles For Determination of Short-Term Release of Silver and Lead From Dental Amalgam in Saliva
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نویسنده
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Amoli Diva Mitra ,Pourghazi Kamyar ,Amoli Diva Majid
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منبع
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Nanochemistry Research - 2017 - دوره : 2 - شماره : 2 - صفحه:205 -213
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چکیده
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Ethylene glycol bisthioglycolate modified gold nanoparticles grafted mn doped fe3o4 nanoparticles (au@mn-fe3o4 nps) adsorbent was synthesized and applied for extraction and preconcentration of trace amounts of ag+ and pb2+ ions in artificial and natural saliva. the adsorbent was characterized by transmission electron microscopy (tem), brunauer– emmett–teller analysis (bet), x-ray diffraction spectroscopy (xrd) and vibrating-sample magnetometer (vsm) techniques and fusayama artificial saliva was prepared and used as a blank sample. natural saliva samples were collected from nine volunteers who exposed to posterior decayed teeth amalgam filling, and short-term release of heavy metal ions was assessed in 24, 72 and 96 h after filling. the main factors affecting extraction and desorption efficiency of target ions have been investigated. in optimum conditions, the detection limits of 0.23 and 0.11 ng ml-1 with preconcentration factors of 94 and 95 were obtained for ag+ and pb2+ ions, respectively. the results revealed that the adsorbent has high capacity and good reusability for extraction and preconcentration of target metal ions in relatively high saline solution like biological fluids.
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کلیدواژه
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Dental Amalgam ,Icp-Oes ,Magnetic Solid Phase Extraction ,Mn Doped Fe3o4 Nanoparticles ,Saliva
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آدرس
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Sharif University Of Technology, Faculty Of Physics, Iran, Karazmi (Tarbiat Moalem) University, Department Of Chemistry, Iran, Babol University Of Medical Sciences, Faculty Of Dentistry, Iran
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پست الکترونیکی
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mitraamoli@yahoo.com
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Authors
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