Optimizacija in validacija Cu modificirane elektrode iz steklastega ogljika za analizo Pb(ii)

diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje

Žan Šašek (Author), Matjaž Finšgar (Mentor), Barbara Petovar (Co-mentor)

Abstract

Namen diplomskega dela je bila optimizacija in validacija Cu modificirane elektrode iz steklastega ogljika za analizo Pb(II). Raziskavo smo začeli z določevanjem meje zaznavnosti (LOD) in meje določljivosti (LOQ), nadaljevali smo z določevanjem linearnosti metode in na koncu smo preverili še točnost in natančnost metode. Za analizo Pb(II) smo uporabili square-wave anodno striping voltametrijo (SWASV), za preverjanje ali naša elektroda deluje pravilno pa smo uporabili metodo ciklične voltametrije (CV). Raziskavo smo opravljali pri treh različnih potencialih depozicije in sicer pri 0,6 V, 0,7 V in 0,8 V. LOD metode nismo mogli določiti pri noben potencialu medtem ko smo LOQ določili pri koncentraciji 2 g/L in to pri vseh treh potencialih. Linearen odziv metode pri potencialu 0,6 V je v območju med 1,85 g/L in 40,86 g/L, pri drugih dveh potencialih pa v območju med 1,85 g/L in 58,18 g/L. Ugotovili smo, da je metoda točna in natančna pri potencialu depozicije 0,7 V in 0,8 V.

Keywords

elektrode iz steklastega ogljika;modificirana Cu elektroda;analiza težkih kovin;voltametrija;anodna striping analiza;svinec;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2018
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[Ž. Šašek]
UDC:	66.011:539.213(043.2)
COBISS:	21619478
Views:	957
Downloads:	187
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Optimization and validation of cu modified glassy carbon electrode for Pb(ii) analysis
Secondary abstract:	The purpose of this thesis is optimization and validation of Cu modified glassy carbon electrode for Pb(II) analysis. The validation began with determination of the limit of detection (LOD) and the limit of quantification (LOQ). We continued with determination of linearity and concluded with determination of accuracy and precision. Square-wave anodic stripping voltammetry (SWASV) was used for Pb (II) analysis and cyclic voltammetry (CV) was use to test if our electrode is working correct. Research was made at three different deposition potencials, at 0,6 V, 0,7 V and 0,8 V. The LOD we could not determine at any deposition potencial while the LOQ was determine at contetration of 2 g/L for all deposition potencials. Linear response at 0,6 V deposition potencial was from 1,85 g/L to 40,86 g/L and at the other two depositio potencials was from 1,85 g/L in 58,18 g/L. Method is the most accurate and precise at 0,7 V and 0,8 V deposition potencials.
Secondary keywords:	glassy carbon electrode;Cu modified electrode;heavy metals analysis;voltammetry;anodic stripping voltametry;lead;
URN:	URN:SI:UM:
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	VIII, 34 str.
ID:	10939844