التفاصيل البيبلوغرافية
العنوان:
Identification of low molecular weight organic acids by ion chromatography/hybrid quadrupole time-of-flight mass spectrometry during Uniblu-A ozonation
المؤلفون:
Giuseppe Mascolo , A. Amorisco , Carlo Pastore , Vito Locaputo
المصدر:
Rapid Communications in Mass Spectrometry . 27:187-199
بيانات النشر:
Wiley, 2012.
سنة النشر:
2012
مصطلحات موضوعية:
chemistry.chemical_classification , Electrospray , Chromatography , Organic Chemistry , Ion chromatography , chemistry.chemical_element , Tandem mass spectrometry , Mass spectrometry , Sulfur , Nitrogen , Analytical Chemistry , Mass , chemistry , Spectroscopy , Organic acid
الوصف:
RATIONALE The balance of organic nitrogen and sulfur during ozonation of organic pollutants often shows a lack of complete mineralization. It follows that polar and ionic by-products are likely to be present that are difficult to identify by liquid chromatography/mass spectrometry (LC/MS). METHODS The structural elucidation of low molecular weight organic acids arising from Uniblu-OH ozonation has been investigated by ion chromatography/electrospray tandem mass spectrometry (IC/ESI-MS/MS) employing a quadrupole time-of-flight mass spectrometer. Unequivocal elemental composition of the by-products was determined by a combination of mass accuracy and high spectral accuracy. RESULTS The employed identification strategy was demonstrated to be a powerful method of unequivocally assigning a single chemical composition to each identified compound. The exact mass measurements of [M–H]– ions allowed the elemental formulae and related structures of eighteen by-products to be determined confidently. The main degradation pathways were found to be decarboxylation and oxidation. The experimental procedure allowed the identification of both nitrogen- and sulfur-containing organic acid by-products arising from Uniblu-OH ozonation. CONCLUSIONS The obtained results are of environmental relevance for the balance of organic nitrogen and sulfur during the ozonation of organic pollutants due to the lack of complete mineralization of the compounds containing these atoms. Copyright © 2012 John Wiley & Sons, Ltd.
تدمد:
0951-4198
DOI:
10.1002/rcm.6429
URL الوصول:
https://explore.openaire.eu/search/publication?articleId=doi_________::46832ea8f075e4196fa04c9b2f2d0e9f https://doi.org/10.1002/rcm.6429
Rights:
CLOSED
رقم الانضمام:
edsair.doi...........46832ea8f075e4196fa04c9b2f2d0e9f
قاعدة البيانات:
OpenAIRE