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分析检测（英文）
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2024年3期
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Identification and Analysis of the Intermediates from Photodegradation of 3,3′-diamino-4,4′-azoxyfurazan(DAAF)by SERS and HPLC-MS/MS
Identification and Analysis of the Intermediates from Photodegradation of 3,3′-diamino-4,4′-azoxyfurazan(DAAF)by SERS and HPLC-MS/MS
摘要
Understanding the structural changes and degradation mechanisms of organic pollutants is critical in environmental research.In this work,a xenon lamp was used as an analog light source to simulate the effect of sunlight on 3,3′-diamino-4,4′-azoxyfurazan(DAAF)in aqueous solution.Combining high-performance liquid chromatography coupled with tandem mass spectrometry(HPLC-MS/MS),surface-enhanced Raman spectroscopy(SERS)with density functional theory(DFT),the degradation intermediates and mechanisms of DAAF were investigated.The sequential breakdown of the-NH 2 and-O-N=bonds,followed by the removal of atomic O from-N=N(O)-,was emphasized and investigated using two-dimensional correlation spectroscopy(2D-COS)and SERS spectra.Three intermediates with mass-to-charge ratios(m/z)181,251 and 180 were identified and characterized by integrating experimental SERS data with DFT-calculated Raman spectra based on structures hypothesized from MS spectra.The findings from HPLC-MS and SERS not only corroborate each other but also provide a foundation for a detailed examination of the DAAF degradation process.
Author：
Qi Wu
Zhenqi Zhang
Wenxu Zheng
Juan Li
Nan Ma
Rui Li
Bo Yang
Weimiao Wang
Xiaodong Li
Meikun Fan
作者单位：
Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China
Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,China
College of Materials and Energy,South China Agricultural University,Guangzhou 510642,China
Southwest University of Science and Technology,Mianyang 621010,China
年，卷(期)：
2024, 8(3)
机标分类号：
TN402
TP311.131
G442
在线出版日期：
2024年11月27日
