Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode
Ultra-trace levels of Hg2+ have been quantified by undertaking linear sweep voltammetry with silver nanoparticle-modified glassy carbon electrode (AgNP-GCE) in aqueous solutions containing Hg2+. This is achieved by monitoring the change in the silver stripping peak with Hg2+ concentration resulting...
| Main Authors: | , , , , , , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado em: |
American Chemical Society
2017
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| _version_ | 1826306714364805120 |
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| author | Suherman, A Ngamchuea, K Tanner, E Sokolov, S Holter, J Young, N Compton, R |
| author_facet | Suherman, A Ngamchuea, K Tanner, E Sokolov, S Holter, J Young, N Compton, R |
| author_sort | Suherman, A |
| collection | OXFORD |
| description | Ultra-trace levels of Hg2+ have been quantified by undertaking linear sweep voltammetry with silver nanoparticle-modified glassy carbon electrode (AgNP-GCE) in aqueous solutions containing Hg2+. This is achieved by monitoring the change in the silver stripping peak with Hg2+ concentration resulting from the galvanic displacement of silver by mercury: Ag(np) + ½ Hg2+ (aq) → Ag+ (aq) + ½ Hg(l). This facile and reproducible detection method exhibits an excellent linear dynamic range of 100.0 pM-10.0 nM Hg2+ concentration with R2 = 0.982. The limit of detection (LoD) based on 3σ is 28 pM Hg2+, whilst the lowest detectable level for quantification purposes is 100.0 pM. This method is appropriate for routine environmental monitoring and drinking water quality assessment since the guideline value set by the US Environmental Protection Agency (EPA) for inorganic mercury in drinking water is 0.002 mg L-1 (10 nM). |
| first_indexed | 2024-03-07T06:52:09Z |
| format | Journal article |
| id | oxford-uuid:fce5dadd-752c-4ed2-8562-37f415a1f6b3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:52:09Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:fce5dadd-752c-4ed2-8562-37f415a1f6b32022-03-27T13:24:40ZElectrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrodeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fce5dadd-752c-4ed2-8562-37f415a1f6b3EnglishSymplectic Elements at OxfordAmerican Chemical Society2017Suherman, ANgamchuea, KTanner, ESokolov, SHolter, JYoung, NCompton, RUltra-trace levels of Hg2+ have been quantified by undertaking linear sweep voltammetry with silver nanoparticle-modified glassy carbon electrode (AgNP-GCE) in aqueous solutions containing Hg2+. This is achieved by monitoring the change in the silver stripping peak with Hg2+ concentration resulting from the galvanic displacement of silver by mercury: Ag(np) + ½ Hg2+ (aq) → Ag+ (aq) + ½ Hg(l). This facile and reproducible detection method exhibits an excellent linear dynamic range of 100.0 pM-10.0 nM Hg2+ concentration with R2 = 0.982. The limit of detection (LoD) based on 3σ is 28 pM Hg2+, whilst the lowest detectable level for quantification purposes is 100.0 pM. This method is appropriate for routine environmental monitoring and drinking water quality assessment since the guideline value set by the US Environmental Protection Agency (EPA) for inorganic mercury in drinking water is 0.002 mg L-1 (10 nM). |
| spellingShingle | Suherman, A Ngamchuea, K Tanner, E Sokolov, S Holter, J Young, N Compton, R Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode |
| title | Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode |
| title_full | Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode |
| title_fullStr | Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode |
| title_full_unstemmed | Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode |
| title_short | Electrochemical detection of ultra-trace (pico-molar) levels of Hg(2+) using a silver nanoparticle-modified glassy carbon electrode |
| title_sort | electrochemical detection of ultra trace pico molar levels of hg 2 using a silver nanoparticle modified glassy carbon electrode |
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