摘要
研究了芬太尼在溴酸钠/亚硫酸氢钠体系中的降解行为,考察了影响芬太尼降解效率的因素.结果显示,溴酸钠与亚硫酸氢钠的物质的量比在1∶0.48至1∶1.26之间,体系的氧化能力强.体系对芬太尼的氧化降解效率与溴酸钠/亚硫酸氢的浓度呈正比,1 mol·L-1的溴酸钠/亚硫酸氢钠、29倍于芬太尼用量可在2 min完全降解芬太尼.有机溶剂具有富集有效氧化成分和芬太尼的作用,有机/水两项体系更利于芬太尼的氧化降解.向完成降解反应后的溴酸钠/亚硫酸氢钠废液中补加亚硫酸氢钠中和剩余氧化剂,可使反应液彻底环境无害化.此外,采用气质联用技术鉴定了芬太尼在溴酸钠/亚硫酸氢体系中的降解产物,探讨了可能的降解机理.
The current study focused on the degradation of fentanyl in NaBrO3/NaHSO3 system. The factors on the degradation kinetics were examined. Our results indicated that the system exhibited strong oxidizing ability when the molar ratio of NaBrO3 and NaHSO3 was in the range from 1∶0.48 to 1∶1.26. The degradation ratio was proportional to the concentration of NaBrO3/NaHSO3 . Fentanyl was completely degraded in 2 minutes when the concentration of NaBrO3/NaHSO3 was 1 mol·L^-1 and the mass ratio of NaBrO3 and fentanyl was 29∶1. Organic solvent could enrich the effective oxidizing ingredient and fentanyl, which was beneficial to the degradation of fentanyl. NaHSO3 was added after fentanyl degradation to neutralize the residue of oxidant in order to minimize potential environmental hazard. In addition, the degradation products of fentanyl were determined by GC/MSD analysis, and the possible mechanism of the degradation reactions was discussed as well.
出处
《环境化学》
CAS
CSCD
北大核心
2015年第1期123-128,共6页
Environmental Chemistry
