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Development of new coated wire nitrate selective electrode sensor for determination of nitrate concentration in an aqueous sample
Buchari B.a, Noviandri I.a, Djamal M.a, Evita M.a
a Department of Chemistry, Institut Teknologi Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]A coated wire nitrate selective electrode has been prepared and characterized. The electrochemical cell for potentiometric measurement consist of a miniaturized homemade Ag/AgCl reference electrode and a coated wire nitrate selective electrode (CWISE) immersed in nitrate solution to be studied, and mV-meter. Standard potential of the Ag/AgCl reference electrode was 0.2496 V. Preparation of CWISE was realized by covering platinum wire of 0.4 mm diameter with thin polymeric membrane. The membrane solution has been prepared by mixing of 0.25 g of polyvinil chloride (PVC) as supporting material, 0.7 g of Aliquat 336-nitrate as ionophore and 5.8 g of dioctylphtalate (DOP) as plasticizer in 10 mL of tetrahydrofuran (THF). The CWISE for nitrate measurement showed non-nerstienne sensitivity at the range 10-1 to 10-4 M of principal ion. The selectivity of CWISE has been studied by determination of its potentiometric selectivity coefficient. The results of these determinations was K Pot NO3-.I > K Pot NO3-,NO3- > K Pot NO3-,Cl- > K Pot NO3-, SO4=. For quantitative analysis by potentiometric method, the calibration curve should be updated. © 2011 IEEE.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Ag/AgCl,Aqueous samples,Calibration curves,Coated wires,CWISE,Membrane solution,Nitrate concentration,Nitrate solutions,Platinum wire,Potentiometric measurements,Potentiometric methods,Reference electrodes,Selective electrodes,Selectivity coefficient,Standard potential,Supporting material,Tetrahydrofurans[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]CWISE,Ion Selective Electrode,Nitrate,sensor[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1109/ICICI-BME.2011.6108660[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]