Development of a certified reference material for cachaça: an effective material for quality assurance
| Autor: | Juliana Swensson de Mattos, Valnei S. Cunha, Fernanda Figueiredo Nunes, Marcus Henrique Campino de la Cruz, Janaína Marques Rodrigues, Werickson Fortunato de Carvalho Rocha, Vanderléa de Souza, Eliane Cristina Pires do Rego, Tânia Maria Monteiro |
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| Rok vydání: | 2013 |
| Předmět: |
business.industry
Chemistry General Chemical Engineering Sugar cane General Chemistry Certification Pulp and paper industry Mass spectrometry law.invention Certified reference materials law Flame ionization detector Gas chromatography Food science Safety Risk Reliability and Quality business Instrumentation Distillation Quality assurance |
| Zdroj: | Accreditation and Quality Assurance. 18:197-206 |
| ISSN: | 1432-0517 0949-1775 |
| DOI: | 10.1007/s00769-013-0985-8 |
| Popis: | Cachaca is the typical and genuine denomination for the sugar cane beverage produced in Brazil. It has an alcoholic content between 38 and 48 % by volume, at 20 °C, and is obtained from the distillation of fermented sugar cane juice with the possible addition of up to 6 g/L of sugar, expressed by sucrose. This paper aims to outline the approach taken for the certification of the mass fraction of individual alcohols and their associated uncertainties in a cachaca certified reference material (CRM) produced by the Organic Analysis Laboratory of the Chemical Metrology Division of Inmetro. The requirements of ISO Guide 31, ISO Guide 34 and ISO Guide 35 were followed for the certification. This included the assessment of the degree of homogeneity of the material, the short-term stability study to determine the transport conditions, the long-term stability study to establish the shelf life and storage conditions of the CRM and the characterization process. The certified values were determined by two analytical techniques: gas chromatography coupled to mass spectrometry and gas chromatography with flame ionization detection. In order to support the routine testing of cachaca, in helping analytical laboratories validate and standardize their methods, the certified reference material (CRM 02.1/10.003b) was developed and certified for the mass fractions of methanol (9.18 mg/100 g ± 0.82 mg/100 g), 2-butanol (4.15 mg/100 g ± 0.40 mg/100 g), 1-butanol (1.30 mg/100 g ± 0.18 mg/100 g), isobutanol (24.0 mg/100 g ± 1.0 mg/100 g) and 1-propanol (29.4 mg/100 g ± 1.3 mg/100 g) in a spiked cachaca. |
| Databáze: | OpenAIRE |
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