Determination of manganese in particulate matter of workplace environments using a boron-doped diamond electrode and cathodic stripping square wave voltammetry

Química Nova

Instituto Nacional de Pesquisas Espaciais, São José dos Campos¹  Felix, Fabiana da Silva¹  Masini, Jorge C.¹  Barros, Rita de Cássia Mendes de¹  Ferreira, Neidenêi Gomes¹  Lichtig, Jaim¹  Universidade de São Paulo, São Paulo¹ 

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-doped diamond electrode is used for determination of Mn(II) in atmospheric particulate matter by square wave cathodic stripping voltammetry. The analytical curve was linear 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 evaluated by the relative standard deviation, with values between 5.1% and 9.3%. The electrode is free of adsorption, minimizing memory effects. Samples collected in the workplace atmosphere 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 inductively coupled plasma optical emission spectroscopy.

【 授权许可】

Unknown