حذف وتعيين سرب (II) با استفاده از ديسك‌هاي نانو مغناطيسي اصلاح شده اكتادسيل سيليكا با دي اكتيل فتالات با روش اسپكتروسكوپي جذب اتمي

Removal of lead (II) using modified octadecyl silica nanomagnetic disks with dioctyl phthalate by atomic absorption spectroscopy

ﭼﮑﯿﺪه در اﯾﻦ ﻣﻄﺎﻟﻌﻪ روﺷﯽ ﺳﺮﯾﻊ و آﺳﺎن ﺑﻪ ﻣﻨﻈﻮر ﺣﺬف و ﺗﻌﯿﯿﻦ ﮐﻤﯽ از ﯾﻮن ﻫﺎي ﺳﺮب )II( ﺑﺎ اﺳﺘﻔﺎده از دﯾﺴﮏﻫﺎي ﻧﺎﻧﻮﻣﻐﻨﺎﻃﯿﺴﯽ اﮐﺘﺎدﺳﯿﻞ ﺳﯿﻠﯿﮑﺎ ﮐﻪ ﺗﻮﺳﻂ ﻧﺎﻧﻮذرات اﮐﺴﯿﺪ آﻫﻦ ﻫﻤﺮاه ﺑﺎ دي اﮐﺘﯿﻞ ﻓﺘﺎﻻت اﺻﻼح ﺷﺪه و ﺑﻪ ﺻﻮرت ﻣﻐﻨﺎﻃﯿﺴﯽ درآﻣﺪه اﺳﺖ و ﺑﺎ روش اﺳﭙﮑﺘﺮوﺳﮑﻮﭘﯽ ﺟﺬب اﺗﻤﯽ ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻗﺮار ﮔﺮﻓﺖ. اﯾﻦ ﻓﺮاﯾﻨﺪ ﺑﺎ اﯾﺠﺎد ﯾﮏ ﮐﻤﭙﻠﮑﺲ در ﺳﻄﺢ دﯾﺴﮏ ENVI-18 اﻧﺠﺎم ﺷﺪه اﺳﺖ و ﺑﺮاي اﺳﺘﺨﺮاج ﮔﻮﻧﻪﻫﺎي ﺟﺬب ﺷﺪه در ﺳﻄﺢ دﯾﺴﮏ ﺣﺪاﻗﻞ ﻣﻘﺪار ﺣﻼل ﻫﺎي آﻟﯽ اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ. ﺷﻮﯾﺶ دﯾﺴﮏﻫﺎ در اﯾﻦ روش ﻗﺎﺑﻞ ﺗﻮﺟﻪ و ﮐﻤﯽ اﺳﺖ. در اﯾﻦ ﺗﺤﻘﯿﻖ اﺛﺮات ﯾﻮن ﻣﺰاﺣﻢ، pH ﻣﻘﺪار ﻟﯿﮕﺎﻧﺪ، ﺣﻼل ﺷﻮﯾﺸﯽ ﻣﻨﺎﺳﺐ و ﺳﺮﻋﺖ ﺟﺮﯾﺎن ﻧﻤﻮﻧﻪ ﻧﯿﺰ ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻗﺮار ﮔﺮﻓﺖ. ﺑﯿﺸﺘﺮﯾﻦ ﻇﺮﻓﯿﺖ ﺟﺬﺑﯽ ﺑﺮاي ﺟﺎذب ﻣﻄﺎﻟﻌﻪ ﺷﺪه ﺑﻪ ﻣﻨﻈﻮر ﺟﺬب ﯾﻮنﻫﺎي ﺳﺮب )II( 370 ﻣﯿﮑﺮوﮔﺮم ﺑﺪﺳﺖ آﻣﺪه اﺳﺖ. ﺣﺪ ﺗﺸﺨﯿﺺ اﯾﻦ روش ﺑﺮاي ﯾﻮنﻫﺎي ﺳﺮب )II( 5/8 ﻧﺎﻧﻮﮔﺮم ﺑﺮ ﻟﯿﺘﺮ ﺑﺪﺳﺖ آﻣﺪ. اﯾﻦ روش ﺑﺮاي اﺳﺘﺨﺮاج و ﺑﺎزﯾﺎﺑﯽ ﺳﺮب )II( در ﻧﻤﻮﻧﻪﻫﺎي ﻣﺨﺘﻠﻒ آﺑﯽ اﺳﺘﻔﺎده ﺷﺪ.

In this study, a fast and easy process to remove and quantify lead (II) ions using octadecyl silica nanomagnetic disks modified by iron oxide nanoparticles with dioctyl phthalate and magnetized. In this study, a fast and easy process for the removal and quantification of lead (II) ions using octadecyl silica nanomagnetic disks modified by iron oxide nanoparticles with dioctyl phthalate and magnetized. In this study, the effects of interfering ions, pH, ligand content, suitable washing solvent, and sample flow rate have been studied. After performing optimization factors for adsorption, the volume of solvent up to about 900 ml was obtained. The maximum adsorption capacity for the studied adsorbent for the adsorption of lead (II) ions was 370 μg. The detection limit for procedure is acceptable with an acceptable value for lead (II) ions. This method was used to extract and recover lead (II) in different aqueous samples.