Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water
We report a sensitive stripping voltammetry method for the detection of total arsenic in aqueous solution using gold macroelectrodes based on the underpotential deposition (UPD) of As ad-atoms. The detection of As(III) or total arsenic can be selectively made by changing deposition potential, with d...
| Hlavní autoři: | , |
|---|---|
| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
Elsevier
2022
|
| _version_ | 1826307956934705152 |
|---|---|
| author | Zhang, Y Compton, RG |
| author_facet | Zhang, Y Compton, RG |
| author_sort | Zhang, Y |
| collection | OXFORD |
| description | We report a sensitive stripping voltammetry method for the detection of total arsenic in aqueous
solution using gold macroelectrodes based on the underpotential deposition (UPD) of As ad-atoms.
The detection of As(III) or total arsenic can be selectively made by changing deposition potential, with
detection of the total As content by deposition at high potential (- 1.3 V) and of As(III) by deposition
at lower potential (- 0.9 V). Linear responses were found for both arsenic species in the range 0.01 μM
to 0.1 μM at gold macroelectrodes. The analytical useful signals were recorded at concentrations as
low as 0.01 μM (0.8 μg L-1
) for both arsenic species suggesting that this method can be used to detect
total arsenic concentrations in drinking water within the threshold value of the WHO of 0.13 μM (10
μg L-1
).
|
| first_indexed | 2024-03-07T07:10:56Z |
| format | Journal article |
| id | oxford-uuid:7fc9b72d-2efc-4b1b-b58b-7eca17eb6113 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:10:56Z |
| publishDate | 2022 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:7fc9b72d-2efc-4b1b-b58b-7eca17eb61132022-06-23T10:35:18ZAnodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in waterJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7fc9b72d-2efc-4b1b-b58b-7eca17eb6113EnglishSymplectic ElementsElsevier2022Zhang, YCompton, RGWe report a sensitive stripping voltammetry method for the detection of total arsenic in aqueous solution using gold macroelectrodes based on the underpotential deposition (UPD) of As ad-atoms. The detection of As(III) or total arsenic can be selectively made by changing deposition potential, with detection of the total As content by deposition at high potential (- 1.3 V) and of As(III) by deposition at lower potential (- 0.9 V). Linear responses were found for both arsenic species in the range 0.01 μM to 0.1 μM at gold macroelectrodes. The analytical useful signals were recorded at concentrations as low as 0.01 μM (0.8 μg L-1 ) for both arsenic species suggesting that this method can be used to detect total arsenic concentrations in drinking water within the threshold value of the WHO of 0.13 μM (10 μg L-1 ). |
| spellingShingle | Zhang, Y Compton, RG Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water |
| title | Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water |
| title_full | Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water |
| title_fullStr | Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water |
| title_full_unstemmed | Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water |
| title_short | Anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total As and As(III) in water |
| title_sort | anodic stripping voltammetry using underpotential deposition allows sub 10 ppb measurement of total as and as iii in water |
| work_keys_str_mv | AT zhangy anodicstrippingvoltammetryusingunderpotentialdepositionallowssub10ppbmeasurementoftotalasandasiiiinwater AT comptonrg anodicstrippingvoltammetryusingunderpotentialdepositionallowssub10ppbmeasurementoftotalasandasiiiinwater |