Interference of lignin in the quantification of free radicals in the process of composting

Química Nova

Fialho, Lucimar Lopes¹  Silva, Wilson Tadeu Lopes da¹  Universidade de São Paulo, São Carlos, Brasil¹  Martin-Neto, Ladislau¹  Universidade Estadual de Ponta Grossa, Ponta Grossa, Brasil¹  Simões, Marcelo Luiz¹  Embrapa Instrumentação Agropecuária, São Carlos, Brasil¹  Saab, Sérgio da Costa¹  Milori, Débora M. B. P.¹  Embrapa Instrumentação Agropecuária, São Carlos¹ 

关键词: composting;    lignin;    EPR.;   

DOI  :  10.1590/S0100-40422010000200024

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work was studied composts and their humic acids (HA) to evaluate the use of EPR in the monitoring of the humification. It was observed increase in the concentration of organic free radical (OFR) in all the composts, but in L1 the increase was more significant than L2 and L3. Research more detailed of L1 showed that the lignin is main source of OFR. Then determination of these radicals in material in nature that contains high amount of lignin isn't a good indicator to monitor the humification process in the composting and yes the fraction HA of the composts.

【 授权许可】

Unknown