电喷雾电离源结合傅立叶变换离子回旋共振质谱分析地下水中可溶性有机质分子组成

发布时间：2018-03-22 20:58

  本文选题：地下水　切入点：电喷雾电离源结合傅立叶变换离子回旋共振质谱(ESI　出处：《分析测试学报》2017年05期 　论文类型：期刊论文

【摘要】：应用电喷雾电离源结合傅立叶变换离子回旋共振质谱(ESI FT-ICR MS)对地下水进行分析,基于高精确度的分子量检测结果,鉴定出O_x,N_1O_x和N_2O_x3大类,共计27小类含杂原子的化合物。杂原子化合物中O_x类化合物占绝大多数,而含N化合物则以结合大量氧原子的形式广泛存在。结合各类杂原子化合物的等效双键数(DBE)及碳数分布,发现O_x类化合物中存在大量的羧酸结构,推测含氮化合物可能来自于O_x类化合物的衍生反应。实验结果拓宽了对地下水中可溶性有机质的认识,为进一步确定其中杂原子化合物的结构类型奠定了基础。
[Abstract]:The groundwater was analyzed by electrospray ionization source and Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS). Based on the results of high precision molecular weight detection, the large categories of OXX and N_2O_x3 were identified. A total of 27 small groups of compounds containing hetero atoms. The N-containing compounds are widely present in the form of a large number of oxygen atoms. Combined with the equivalent double bond number (DBE) and the carbon number distribution of various hetero-atomic compounds, it is found that there are a large number of carboxylic acids in the O _ x compounds. It is suggested that the nitrogen-containing compounds may be derived from the derivative reactions of O _ S _ x compounds. The experimental results broaden the understanding of soluble organic matter in groundwater and lay a foundation for further determining the structural types of hetero-atomic compounds.
【作者单位】： 山东省地矿工程勘察院;
【基金】：山东省2015年度31个省级地质勘查项目(SDZS-2015-GTT01包号:D3)
【分类号】：O657.63;P641.12
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