EVALUATION OF DIFFERENT COLORIMETRIC REAGENTS FOR THE DETERMINATION OF FORMALDEHYDE IN INDOOR ENVIRONMENTS

Author(s)

Darllene Silveira ^[1] ; Jessica Oliveira Fernandes ^[2] ; Elisabete Alves Pereira ^[3]

Affiliation

^[1] Universidade Federal de São Carlos. Departamento de Física, Química e Matemática - Brasil

^[2] Universidade Federal de São Carlos. Departamento de Física, Química e Matemática - Brasil

^[3] Universidade Federal de São Carlos. Departamento de Física, Química e Matemática - Brasil

• Document type: Journal article
• Source: Química Nova; v. 38, n. 6, p. 842-847, 2015-07-00.

Abstract

<p>Different colorimetric reagents, the Nash reagent (acetylacetone/ammonia solution), Purpald (4-amino- 3-hydrazino-5-mercapto-1,2,4-triazole/sodium hydroxide solution) and 3-methyl-2-benzothiazolinone hydrazone (MBTH), were evaluated for the determination of formaldehyde in indoor air samples. Analytical parameters such as color stability of the product formed, sampling efficiency and reaction conditions were compared for the methodologies. Several method validation parameters were determined for the three colorimetric methods. The MBTH method showed better results and was used for the determination of formaldehydes in indoor environments.</p> (AU)

• FAPESP's process: 11/23286-1 - Analytical and environmental studies of the spatial, seasonal and temporal distribution of the low molar weight aldehydes in the atmosphere of the Sorocaba region
• Grantee: Elisabete Alves Pereira
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/14106-5 - Determination of low molar weight aldehydes in indoor environments using Capillary electrophoresis
• Grantee: Darllene Silveira
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 14/10817-7 - Evaluation of different preconcentration systems for the collection of formaldehyde and acetaldehyde in air samples
• Grantee: Jéssica Oliveira Fernandes Mantoanelli
• Support Opportunities: Scholarships in Brazil - Scientific Initiation