Critical Periods of Storage of the Greenhouse Gases in Polypropylene Syringe

Autor(es)

Gonsiorkiewicz Rigon, Joao Paulo ^[1] ; Calonego, Juliano Carlos ^[1] ; Guimaraes, Tiara Moraes ^[1] ; Rosolem, Ciro Antonio ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, UNESP, Coll Agr Sci, Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Communications in Soil Science and Plant Analysis; v. 48, n. 14, p. 1726-1732, 2017.
• Citações Web of Science: 0

Resumo

It is convenient to store gas samples containing e.g. carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), in polypropylene syringes before chromatographic analysis. However, there is no study of the integrity of these samples or of what storage condition may be critical. To investigate we filled polypropylene syringes with two standard mixtures of CO2, CH4, and N2O, and stored them at similar to 2 degrees C and similar to 25 degrees C, and analyzed the contents using gas chromatography. Our results suggest that the storage of gases on the syringe at room temperature is not viable due the CO2 storage integrity when in low concentration. However, the quantitative integrity of samples is maintained when the syringe is kept refrigerated up to 19h, period limited by CO2 and CH4, taking into account the three gases CO2, CH4, and N2O. (AU)

• Processo FAPESP: 11/15361-3 - Emissão de gases de efeito estufa em áreas com diferentes rotações de culturas em sistema semeadura direta
• Beneficiário: João Paulo Gonsiorkiewicz Rigon
• Modalidade de apoio: Bolsas no Brasil - Mestrado