Differential pulse voltammetric determination of homovanillic acid as a tumor biomarker in human urine after hollow fiber-based liquid-phase microextraction

Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber – based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applie...

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Published inTalanta (Oxford) Vol. 221; p. 121594
Main Authors Hrdlička, Vojtěch, Barek, Jiří, Navrátil, Tomáš
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.01.2021
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ISSN0039-9140
1873-3573
1873-3573
DOI10.1016/j.talanta.2020.121594

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Abstract Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber – based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applied for these purposes. Optimum conditions were: butyl benzoate as supported liquid membrane (SLM) formed on polypropylene HF, 0.1 mol L−1 HCl as donor phase, 0.1 mol L−1 sodium phosphate buffer of pH 6 as acceptor phase, and 30 min extraction time. HF-LPME-DPV concentration dependence was linear in the range from 1.2 to 100 μmol L−1. Limits of quantification (LOQ) and detection (LOD) were 1.2 and 0.4 μmol L−1, respectively. The applicability of the developed method was verified by analysis of human urine. Standard addition method was used, found HVA concentration was 13.5 ± 1.3 μmol L−1, RSD = 9.3% (n=5). [Display omitted] •New hollow-fiber microextraction determination of homovanillic acid.•Microextraction coupled with differential pulse voltammetry.•Cathodically pre-treated boron doped diamond working electrode.•Green solvent butyl benzoate as supported liquid membrane.•Method verified using real human urine sample.
AbstractList Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber - based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applied for these purposes. Optimum conditions were: butyl benzoate as supported liquid membrane (SLM) formed on polypropylene HF, 0.1 mol L HCl as donor phase, 0.1 mol L sodium phosphate buffer of pH 6 as acceptor phase, and 30 min extraction time. HF-LPME-DPV concentration dependence was linear in the range from 1.2 to 100 μmol L . Limits of quantification (LOQ) and detection (LOD) were 1.2 and 0.4 μmol L , respectively. The applicability of the developed method was verified by analysis of human urine. Standard addition method was used, found HVA concentration was 13.5 ± 1.3 μmol L , RSD = 9.3% (n=5).
Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber – based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applied for these purposes. Optimum conditions were: butyl benzoate as supported liquid membrane (SLM) formed on polypropylene HF, 0.1 mol L⁻¹ HCl as donor phase, 0.1 mol L⁻¹ sodium phosphate buffer of pH 6 as acceptor phase, and 30 min extraction time. HF-LPME-DPV concentration dependence was linear in the range from 1.2 to 100 μmol L⁻¹. Limits of quantification (LOQ) and detection (LOD) were 1.2 and 0.4 μmol L⁻¹, respectively. The applicability of the developed method was verified by analysis of human urine. Standard addition method was used, found HVA concentration was 13.5 ± 1.3 μmol L⁻¹, RSD = 9.3% (n=5).
Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber - based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applied for these purposes. Optimum conditions were: butyl benzoate as supported liquid membrane (SLM) formed on polypropylene HF, 0.1 mol L-1 HCl as donor phase, 0.1 mol L-1 sodium phosphate buffer of pH 6 as acceptor phase, and 30 min extraction time. HF-LPME-DPV concentration dependence was linear in the range from 1.2 to 100 μmol L-1. Limits of quantification (LOQ) and detection (LOD) were 1.2 and 0.4 μmol L-1, respectively. The applicability of the developed method was verified by analysis of human urine. Standard addition method was used, found HVA concentration was 13.5 ± 1.3 μmol L-1, RSD = 9.3% (n=5).Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber - based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applied for these purposes. Optimum conditions were: butyl benzoate as supported liquid membrane (SLM) formed on polypropylene HF, 0.1 mol L-1 HCl as donor phase, 0.1 mol L-1 sodium phosphate buffer of pH 6 as acceptor phase, and 30 min extraction time. HF-LPME-DPV concentration dependence was linear in the range from 1.2 to 100 μmol L-1. Limits of quantification (LOQ) and detection (LOD) were 1.2 and 0.4 μmol L-1, respectively. The applicability of the developed method was verified by analysis of human urine. Standard addition method was used, found HVA concentration was 13.5 ± 1.3 μmol L-1, RSD = 9.3% (n=5).
Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber – based liquid-phase microextraction (HF-LPME) and differential pulse voltammetry (DPV) at a cathodically pre-treated boron doped diamond electrode (BDDE) was applied for these purposes. Optimum conditions were: butyl benzoate as supported liquid membrane (SLM) formed on polypropylene HF, 0.1 mol L−1 HCl as donor phase, 0.1 mol L−1 sodium phosphate buffer of pH 6 as acceptor phase, and 30 min extraction time. HF-LPME-DPV concentration dependence was linear in the range from 1.2 to 100 μmol L−1. Limits of quantification (LOQ) and detection (LOD) were 1.2 and 0.4 μmol L−1, respectively. The applicability of the developed method was verified by analysis of human urine. Standard addition method was used, found HVA concentration was 13.5 ± 1.3 μmol L−1, RSD = 9.3% (n=5). [Display omitted] •New hollow-fiber microextraction determination of homovanillic acid.•Microextraction coupled with differential pulse voltammetry.•Cathodically pre-treated boron doped diamond working electrode.•Green solvent butyl benzoate as supported liquid membrane.•Method verified using real human urine sample.
ArticleNumber 121594
Author Hrdlička, Vojtěch
Barek, Jiří
Navrátil, Tomáš
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  givenname: Tomáš
  surname: Navrátil
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  organization: J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23, Prague 8, Czech Republic
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Keywords Neuroblastoma biomarkers
Homovanillic acid
Hollow fiber
Catecholamine metabolites
Boron doped diamond electrode
Liquid phase microextraction
Differential pulse voltammetry
Language English
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Snippet Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber – based liquid-phase...
Novel method for the determination of a tumor marker homovanillic acid (HVA) in human urine was developed. Combination of hollow fiber - based liquid-phase...
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SubjectTerms biomarkers
Biomarkers, Tumor
boron
Boron doped diamond electrode
Catecholamine metabolites
Chromatography, High Pressure Liquid
detection
Differential pulse voltammetry
electrodes
Hollow fiber
Homovanillic Acid
Humans
Liquid Phase Microextraction
neoplasms
Neuroblastoma biomarkers
polypropylenes
sodium phosphate
supported liquid membranes
urine
voltammetry
Title Differential pulse voltammetric determination of homovanillic acid as a tumor biomarker in human urine after hollow fiber-based liquid-phase microextraction
URI https://dx.doi.org/10.1016/j.talanta.2020.121594
https://www.ncbi.nlm.nih.gov/pubmed/33076128
https://www.proquest.com/docview/2452505630
https://www.proquest.com/docview/2511205367
Volume 221
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