| Naslov: | Determination of penicillamine by batch and flow-injection potentiometry with AgI-based sensor |
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| Avtorji: | ID Radić, Njegomir (Avtor)
ID Komljenović, Josipa (Avtor)
ID Dobčnik, Danilo (Avtor) |
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| Datoteke: |  Croatica_Chemica_Acta_2000_Radic,_Komljenovic,_Dobcnik_Determination_of_penicillamine_by_batch_and_flow-injection_potentiometry_with_AgI.pdf (196,90 KB)
MD5: 4031B198291A8172DFD2F8278C54A9BB
PID: 20.500.12556/dkum/2b6b7b77-d9c0-46c5-95f2-5819e67632b8
 http://hrcak.srce.hr/132094
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | FKKT - Fakulteta za kemijo in kemijsko tehnologijo
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| Opis: | Potentiometric determination of penicillamine (pen) is described based on a batch experiment and flow-injection analysis (FIA) using a chemical sensor with AgI-based membrane. The membrane was prepared by pressing silver salts (AgI, Ag2S) and powdered Teflon. This membrane was incorporated in a multipurpose electrode body for batch measurements, and in a tabular flow-through sensor body for FIA measurements. For batch measurements, the equilibrium potentials recorded with continuous addition of standard penicillamine solution were considered in relation to ▫$lg(c_pen/mol L^-1)$▫. Linear response with slope of 60 mV was obtained in the concentration range from 2.5 x ▫$10^5$▫ mol ▫$L^1$▫ to 1.8 x ▫$10^-2$▫mol ▫$L-1$▫. In using the tubular sensor with a membrane of the same coposition for FIA measurements, the linear response with slope of 59 mV was recorded in the concentration range from 1 x ▫$10^4$▫ mol ▫$L^1$▫ to 1 x ▫$10^-1$▫ mol ▫$L^-1$▫. The response of the applied chemical sensor to penicillamine (designated also as RSH) is explained by the formation of sparingly soluble RSAg in the reaction solution and/or the exposed surface of the sensor. The solubility product ▫$K_s(RSAg)$▫ was determined using experimental values recorded both by batch measurements and by the continuous-flow experiment. The mean value obtained by different measurements and using a membrane of the same composition is ▫$K_s(RSAg)$▫ = (1.4+-0.1) x ▫$10^-20$▫ mol ▫$L-2$▫). |
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| Ključne besede: | analytical chemistry, batch potentiometry, flow-injection analysis, membrane electrode, tubular sensors, penicillamine |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Leto izida: | 2000 |
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| Št. strani: | str. 265-277 |
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| Številčenje: | Letn. 73, št. 1 |
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| PID: | 20.500.12556/DKUM-66656  |
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| ISSN: | 0011-1643 |
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| UDK: | 543.257 |
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| COBISS.SI-ID: | 5204502 |
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| ISSN pri članku: | 0011-1643 |
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| NUK URN: | URN:SI:UM:DK:YTPWV4B3 |
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| Datum objave v DKUM: | 05.07.2017 |
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| Število ogledov: | 1465 |
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| Število prenosov: | 99 |
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| Metapodatki: |    |
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| Področja: | Ostalo
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