Investigations into the Speciationof Inorganic Arsenicin Weakly Alkaline Medium by Voltammetry
| Parent link: | Electroanalysis Vol. 27, iss. 3.— 2015.— [P. 890–901] |
|---|---|
| Corporate Author: | |
| Other Authors: | , , , , |
| Summary: | Title screen The speciation of inorganic forms of arsenic was studied using anodic stripping voltammetry (ASV) at a gold microelectrode in conjunction with photoreduction of As(V). Sodium sulfite (0.1 M) and ammonium buffer (pH≥9.5) were selected as both background electrolyte and photo-reductive reagent. Oxygen was removed by radical chain reactions with sulfite. The proposed speciation method was validated for mixtures of arsenic As(III/V) at concentrations up to 1 mg L−1. The calculated LOD of As(III/V) was 0.06 µg L−1 (3σ, tdep 40 s). Any interference from nitrate anions present at up to millimolar concentration was minimized by their photoreduction. Режим доступа: по договору с организацией-держателем ресурса |
| Language: | English |
| Published: |
2015
|
| Subjects: | |
| Online Access: | https://doi.org/10.1002/elan.201500034 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667325 |
| Summary: | Title screen The speciation of inorganic forms of arsenic was studied using anodic stripping voltammetry (ASV) at a gold microelectrode in conjunction with photoreduction of As(V). Sodium sulfite (0.1 M) and ammonium buffer (pH≥9.5) were selected as both background electrolyte and photo-reductive reagent. Oxygen was removed by radical chain reactions with sulfite. The proposed speciation method was validated for mixtures of arsenic As(III/V) at concentrations up to 1 mg L−1. The calculated LOD of As(III/V) was 0.06 µg L−1 (3σ, tdep 40 s). Any interference from nitrate anions present at up to millimolar concentration was minimized by their photoreduction. Режим доступа: по договору с организацией-держателем ресурса |
|---|---|
| DOI: | 10.1002/elan.201500034 |