Simultaneous detection and identification of precursors, degradation and co-products of chemical warfare agents in drinking water by ultra-high performance liquid chromatography–quadrupole time-of-flight mass spectrometry

Tak, Vijay; Purohit, Ajay Kumar; Pardasani, Deepak; Goud, D. Raghavender; Jain, Rajeev; Dubey, D. K.

doi:10.1016/j.chroma.2014.10.030

Cited by 18 publications

(14 citation statements)

References 33 publications

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“…5 After reviewed lots of relevant literature and reference experiment, we found different subclasses easily inform DFs with basic structure of aglycone. In MS, glycoside compounds were converted to aglycone as glycosyl was lost; thus, the characteristic fragments were analysed based on aglycone.…”

Section: Flavonoidsmentioning

confidence: 95%

Rapid classification and identification of complex chemical compositions in traditional Chinese medicine based on UPLC-Q-TOF/MS coupled with data processing techniques using the KuDieZi injection as an example

et al. 2015

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KuDieZi (KDZ) injection is prepared by extracting and processing Ixeris sonchifolia [Ixeris sonchifolia Hance] belonging to Lactuca genus of the Asteraceae family. KDZ injection is a single-herb preparation in which components are analysed by liquid chromatographymass spectrometry. However, the chemical compositions of this preparation are complex and diverse. Hence, data processing is complicated and time consuming; furthermore, data processing can not provide a systematic, accurate and repeatable method to rapidly 10 classify and identify chemical constituents of the injection. In our study, the main components, particularly flavonoids, organic acids, amino acids and nucleosides in KDZ injection, were rapidly classified and identified by data processing technology based on UPLC-Q-TOF/MS. After we reviewed lots of studies and collected the fragments' information, then compared with the mass spectrometric analyses in standards, the rules of diagnostic fragments (DFs) and neutral losses (NLs) of the four substances were established and summarised. A rapid classification and identification method of the chemical compositions of KDZ injection was then constructed using 15 DF filter (DFF) and NL filter (NLF). This method was applied to analyse the KDZ injection. A total of 31 chemical components, which included 8 flavonoids, 13 organic acids, 6 amino acids and 4 nucleosides, were obtained. DFF and NLF were used to rapidly classify and identify chemical substances in KDZ fingerprint. With this method, we effectively solved the technical difficulties in fingerprint resolution caused by complex components and low levels in traditional Chinese medicine (TCM). In addition, this study provided a novel approach for further studies on TCM.

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Section: Flavonoidsmentioning

confidence: 95%

Rapid classification and identification of complex chemical compositions in traditional Chinese medicine based on UPLC-Q-TOF/MS coupled with data processing techniques using the KuDieZi injection as an example

et al. 2015

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“…Instrumental recognition of nerve gases (such as mass spectrometry or gas chromatography) is highly sensitive [8,9]. However, the complexity of the systems involved is a limit for a “real field” application.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Detection of a Nerve Agent Simulant by Fluorescent Zn–Salen Oligomer Receptors

et al. 2019

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We report on new Zn–Salen oligomer receptors able to recognize a nerve agent simulant, namely dimethyl methylphosphonate (DMMP), by a supramolecular approach. In particular, three Zn-Salen oligomers (Zn–Oligo–A, –B, and –C), differing by the length distribution, were obtained and characterized by NMR, Gel Permeation Chromatography (GPC), UV-Vis, and fluorescence spectroscopy. Furthermore, we investigated their recognition properties towards DMMP by using fluorescence measurements. We found that the recognition ability depends on the length of the oligomeric chain, and the Zn–Oligo–C shows a binding constant value higher than those already reported in literature for the DMMP detection.

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“…Ultra‐performance liquid chromatography quadrupole time‐of‐flight mass spectrometry (UPLC‐Q‐TOF‐MS)is a non‐targeted analytical method with high resolution, high sensitivity, high speed and accurate measurements. It is widely used in TCM . However, it is necessary to rely on reference substances for comparison.…”

Section: Introductionmentioning

confidence: 99%

“…It is widely used in TCM. [9][10][11][12] However, it is necessary to rely on reference substances for comparison. The complex compounds of TCM and the high cost of the reference substance had become a problem in the analysis and identification.…”

mentioning

confidence: 99%

Establishing a rapid classification and identification method for the major triterpenoids of Alisma orientale

Yang

Dong

et al. 2019

Phytochemical Analysis

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Introduction Alismatis Rhizoma (AR) has been widely used to treat various diseases. Its complex chemical composition has caused certain difficulties in the analysis of this traditional Chinese medicine. Therefore, it is necessary to establish a method for the rapid classification and identification of the chemical constituents of AR. Objective This article describes a method for the rapid classification and identification of major triterpenoids in AR. Methodology The samples were analysed by ultra‐performance liquid chromatography quadrupole time‐of‐flight mass spectrometry (UPLC‐Q‐TOF‐MS). The assay was performed on a Waters ACQUITY UPLC BEH C18 column (100 mm × 2.1 mm, 1.7 μm) with 0.1% formic acid in water (A), and acetonitrile (B) as mobile phase by gradient elution at a flow rate of 0.3 mL/min. In the positive ion mode, the fragment information was obtained and compared with the characteristic fragments and neutral losses described in the literature. Then, the rapid classification and identification of the chemical components from AR were achieved. Results Finally, 25 triterpene compounds of AR were identified. Conclusions The method established in this study achieved the rapid classification and identification of chemical components in AR, which promotes the development of research methods to study the constituents of traditional Chinese medicine.

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Simultaneous detection and identification of precursors, degradation and co-products of chemical warfare agents in drinking water by ultra-high performance liquid chromatography–quadrupole time-of-flight mass spectrometry

Cited by 18 publications

References 33 publications

Rapid classification and identification of complex chemical compositions in traditional Chinese medicine based on UPLC-Q-TOF/MS coupled with data processing techniques using the KuDieZi injection as an example

Rapid classification and identification of complex chemical compositions in traditional Chinese medicine based on UPLC-Q-TOF/MS coupled with data processing techniques using the KuDieZi injection as an example

Supramolecular Detection of a Nerve Agent Simulant by Fluorescent Zn–Salen Oligomer Receptors

Establishing a rapid classification and identification method for the major triterpenoids of Alisma orientale

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