Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide
The electrochemical oxidation of N,N-diethylphenylene-1,4-diamine (DEPD) and its subsequent reaction with sulfide has been exploited as a means of quantifying the latter. Re-oxidation of the resulting adduct was found to lead to an increase in the oxidative current which scaled linearly with sulfide...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2001
|
| _version_ | 1797057425739612160 |
|---|---|
| author | Lawrence, N Thompson, M Davis, J Jiang, L Jones, T Compton, R |
| author_facet | Lawrence, N Thompson, M Davis, J Jiang, L Jones, T Compton, R |
| author_sort | Lawrence, N |
| collection | OXFORD |
| description | The electrochemical oxidation of N,N-diethylphenylene-1,4-diamine (DEPD) and its subsequent reaction with sulfide has been exploited as a means of quantifying the latter. Re-oxidation of the resulting adduct was found to lead to an increase in the oxidative current which scaled linearly with sulfide concentration over the range 30 μM to 516 μM, although it was found that the upper limit could be extended through simply increasing the concentration of the DEPD indicator. As such the detection range is within an analytically relevant region with the detection limit of 4 μM comparing favourably with other electrochemical techniques. The approach has been extended to the detection of sulfite; this has been shown to be a facile yet robust process with complete recovery observed in the reductive conversion of sulfite to sulfide. |
| first_indexed | 2024-03-06T19:36:10Z |
| format | Journal article |
| id | oxford-uuid:1f1e7e21-0c0b-485b-bf55-daf5f2e4e6e6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:36:10Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:1f1e7e21-0c0b-485b-bf55-daf5f2e4e6e62022-03-26T11:20:08ZDetection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfideJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1f1e7e21-0c0b-485b-bf55-daf5f2e4e6e6EnglishSymplectic Elements at Oxford2001Lawrence, NThompson, MDavis, JJiang, LJones, TCompton, RThe electrochemical oxidation of N,N-diethylphenylene-1,4-diamine (DEPD) and its subsequent reaction with sulfide has been exploited as a means of quantifying the latter. Re-oxidation of the resulting adduct was found to lead to an increase in the oxidative current which scaled linearly with sulfide concentration over the range 30 μM to 516 μM, although it was found that the upper limit could be extended through simply increasing the concentration of the DEPD indicator. As such the detection range is within an analytically relevant region with the detection limit of 4 μM comparing favourably with other electrochemical techniques. The approach has been extended to the detection of sulfite; this has been shown to be a facile yet robust process with complete recovery observed in the reductive conversion of sulfite to sulfide. |
| spellingShingle | Lawrence, N Thompson, M Davis, J Jiang, L Jones, T Compton, R Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| title | Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| title_full | Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| title_fullStr | Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| title_full_unstemmed | Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| title_short | Detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| title_sort | detection of sulfite via the trapping and subsequent electrochemical detection of hydrogen sulfide |
| work_keys_str_mv | AT lawrencen detectionofsulfiteviathetrappingandsubsequentelectrochemicaldetectionofhydrogensulfide AT thompsonm detectionofsulfiteviathetrappingandsubsequentelectrochemicaldetectionofhydrogensulfide AT davisj detectionofsulfiteviathetrappingandsubsequentelectrochemicaldetectionofhydrogensulfide AT jiangl detectionofsulfiteviathetrappingandsubsequentelectrochemicaldetectionofhydrogensulfide AT jonest detectionofsulfiteviathetrappingandsubsequentelectrochemicaldetectionofhydrogensulfide AT comptonr detectionofsulfiteviathetrappingandsubsequentelectrochemicaldetectionofhydrogensulfide |