Utilization of disposable polypropylene flasks for pre-treatment of water samples for determination of lead, copper and mercury by square wave voltammetry

Química Nova

Richter, Eduardo M.¹  Universidade de São Paulo, São Paulo, Brasil¹  Angnes, Lúcio¹  Lago, Claudimir L. do¹ 

关键词: sample pretreatment;    water analysis;    polypropylene vials.;   

DOI  :  10.1590/S0100-40422006000400039

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work a simple and versatile procedure is described for treating water samples using small polypropylene (PP) vials (4 mL) for determining heavy metals by square wave voltammetry (SWV). This procedure involves treatment with nitric acid (0.2 mol L-1) and boiling in a water-bath (~ 100 ºC). This process is completed after one hour and allows the pretreatment of several samples simultaneously. The accuracy was estimated using addition/recovery studies and certified water sample analysis, yielding an agreement near to 100%.

【 授权许可】

Unknown