EXTRAÇÃO ASSISTIDA POR ULTRASSOM PARA DETERMINAÇÃO COLORIMÉTRICA DE FERRO EM SOLO: UMA COMPARAÇÃO COM ESPECTROMETRIA DE MASSA COM PLASMA INDUTIVAMENTE ACOPLADO

Química Nova

Paula Cristiana De Freitas¹  Rui Miguel De Carvalho¹  Jessee Severo Azevedo Silva¹  Thiago Prado¹  Elis Regina Duarte¹  Vera L. A. Frescura¹  Eduardo S. Chaves¹ 

关键词: soil;    ultrasound-assisted extraction;    iron;    colorimetric;    ICP-MS;   

DOI  :  10.5935/0100-4042.20150021

来源: SciELO

【 摘 要 】

A simple procedure for ultrasound-assisted extraction and colorimetric determination of iron in soil samples was developed. The iron concentration in the analyzed samples was determined by the colorimetric method and the results compared with inductively coupled plasma mass spectrometry (ICP-MS). Fifteen soil samples were analyzed and the iron concentration results compared with those obtained by ICP-MS using microwave-assisted sample digestion. The proposed procedure showed good efficiency for iron extraction and the results obtained by colorimetric determination exhibited good agreement with ICP-MS. Moreover, ultrasound-assisted extraction and colorimetric determination is a simple, fast and low-cost procedure for application in routine analysis.

【 授权许可】

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