Quimica nova | |
Determination of manganese in particulate matter of workplace environments using a boron-doped diamond electrode and cathodic stripping square wave voltammetry | |
Ferreira, Neidenêi Gomes1  Felix, Fabiana da Silva2  Masini, Jorge C.2  Barros, Rita de Cássia Mendes de2  Lichtig, Jaim2  | |
[1] Instituto Nacional de Pesquisas Espaciais, São José dos Campos;Universidade de São Paulo, São Paulo | |
关键词: manganese; boron-doped diamond; square wave voltammetry.; | |
DOI : 10.1590/S0100-40422005000600013 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
A boron-dopeddiamond electrode is used for determination of Mn(II) in atmospheric particulatematter by square wave cathodic stripping voltammetry. The analytical curve waslinear for Mn(II) concentrations between 5.0 and 37.5 µg L-1,with quantification limit of 3.6 µg L-1. The precision was evaluatedby the relative standard deviation, with values between 5.1% and 9.3%. The electrodeis free of adsorption, minimizing memory effects. Samples collected in the workplaceatmosphere of a foundry had Mn(II) concentrations between 0.4 and 4 µg m-3.No significant differences were observed between the proposed method and inductivelycoupled plasma optical emission spectroscopy.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902015943601ZK.pdf | 118KB | download |