Adsorção/dessorção do explosivo tetril em turfa e em argissolo vermelho amarelo

Química Nova

Sandra Zago Falone¹  Eny Maria Vieira¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos São Carlos SP

关键词: explosive;    adsorption;    desorption;   

DOI  :  10.1590/S0100-40422004000600002

来源: SciELO

【 摘 要 】

This paper presents the study of adsorption/desorption of the explosive tetryl (2,4,6-trinitrophenylmethyl-nitramine) in different matrices, such as in natura soil, roasted soil, humic acid of soil, in natura peat, roasted peat and humic acid of peat. The aim of the study is to evaluate the interaction capacity of those matrices with the explosive. The analytic technique used was HPLC (high performance liquid chromatography), with UV-detection at 230 nm. The Freundlich isotherms were utilized for the mathematical treatment of the data. The results indicated that in natura soil and in natura peat (with organic substances) are excellent matrices for the retention of tetryl, adsorbing it and keeping it immovable, preventing it from contaminating the groundwater. The largest adsorption of the explosive ocurred in in natura soil, while the smallest desorption was observed in in natura peat. After the calcination of the matrices, the smallest adsorption was observed, indicating that the retention occurs in the organic substance.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License