Quantification of Transformation Products of Unsymmetrical Dimethylhydrazine in Water Using SPME and GC-MS

Bakaikina, Nadezhda V.; Kenessov, Bulat; Ul’yanovskii, N. V.; Kosyakov, D. S.; Покрышкин, С. А.; Derbissalin, Miras; Zhubatov, Zhailaubay K.

doi:10.1007/s10337-017-3286-2

Cited by 19 publications

(12 citation statements)

References 12 publications

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“…UDMH ozonation procedure: 200 ml of UDMH (1 g l 21 ) was added to the reaction chamber. Then, the reaction chamber was flushed with ozone (the production of ozonizer, 3 g h 21 ).…”

Section: Reaction Proceduresmentioning

confidence: 99%

“…UDMH oxidation by Fenton reagents (Fe 2þ /H 2 O 2 ) procedure: 100 ml of UDMH (1 gl 21 ), 4.08 ml of 30% H 2 O 2 , 7.8 ml of FeSO 4 . 7H 2 O (0.5 mol l 21 ) were added to the reaction chamber in that order. An appropriate amount of distilled water was added to make a volume of 200 ml, so that the…”

Section: Reaction Proceduresmentioning

confidence: 99%

“…The separation was performed on a DB-225S (30 m Â 250 mm Â 0.25 mm) capillary column. The column was maintained at a constant flow of UHP-grade helium at 1.5 ml min 21 . The GC oven programme was as follows: 358C for the first 5 min, followed by 108C min 21 ramping to 158C.…”

Section: Parameters Of Gc-ms Analysesmentioning

confidence: 99%

“…Numerous investigations have been carried out regarding the environmental transformation effects of UDMH in water and in soil. Various analytical methods have been carried out, such as the high-performance liquid chromatography (HPLC)-MS method [15–17], gas chromatography–mass spectrometric (GC-MS) method [18–21], and solid-phase micro-extraction (SPME)-GC-MS method [22,23]. The GC-MS method provides sufficient lower detection limits for most UDMH transformation products compared to HPLC-MS methods.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the compositions of unsymmetrical dimethylhydrazine treatment with different oxidants using solid-phase micro-extraction-gas chromatography–mass spectrometer

et al. 2019

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The majority of unsymmetrical dimethylhydrazine (UDMH) treatments produce lots of toxic by-products, among which N -Nitrosodimethylamine (NDMA) is a strong carcinogen. The compositions of the by-products are important for evaluating the treatment efficiency and understanding the UDMH degradation mechanism to achieve UDMH mineralization. The intermediate and end products of UDMH treatment with different oxidants were investigated by using a simple and fast method, solid-phase micro-extraction (SPME) in combination with gas chromatography–mass spectrometry (GC-MS). The effects of several parameters (coating fibre, salt addition, pH, sampling time and desorption time) were studied to optimize analyte recovery. The best response can be attained by the 65 µm PDMS/DVB fibre at pH 7 during 10 min after desorption of 1 min in the GC inlet. The intermediate and final oxidative products of UDMH wastewater treatment with different oxidants (O 3 , Mn 2+ /O 3 , Fe 2+ /H 2 O 2 ) were investigated. The results showed that the UDMH treatment with O 3 could lead to high yields of NDMA. Metal catalytic ozonation could largely minimize the formation of NDMA. No NDMA was observed in the final decontaminated samples after treatment with Fe 2+ /H 2 O 2 . The NDMA formation and degradation mechanism were discussed based on the intermediates. This study is expected to provide useful information for controlling NDMA formation during UDMH wastewater treatment.

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“…UDMH ozonation procedure: 200 ml of UDMH (1 g l 21 ) was added to the reaction chamber. Then, the reaction chamber was flushed with ozone (the production of ozonizer, 3 g h 21 ).…”

Section: Reaction Proceduresmentioning

confidence: 99%

Section: Reaction Proceduresmentioning

confidence: 99%

Section: Parameters Of Gc-ms Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on the compositions of unsymmetrical dimethylhydrazine treatment with different oxidants using solid-phase micro-extraction-gas chromatography–mass spectrometer

et al. 2019

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“…Matrix effect can be controlled using standard addition (SA) and internal standard (IS) calibrations methods (Llompart et al 1999;Yegemova et al 2015;Bakaikina et al 2018), and/or minimized using derivatization, solvent extraction, addition of excess water, increase of extraction temperature and exhaustive extraction e.g., by cold ber . High reactivity of UDMH and some of its transformation products upon contact with air and water (Buryak et al 2004;Rodin et al 2008Rodin et al , 2012Kenessov et al 2012) is another problem resulting in a decreased accuracy of methods based on HSSPME, particularly at elevated temperatures (Zhubatov et al 2016;Bakaikina et al 2017Bakaikina et al , 2018.…”

Section: Introductionmentioning

confidence: 99%

Quantification of trace transformation products of rocket fuel unsymmetrical dimethylhydrazine in sand using vacuum-assisted headspace solid-phase microextraction

Zhakupbekova

Baimatova

Psillakis

et al. 2021

Preprint

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Quantification of unsymmetrical dimethylhydrazine (UDMH) transformation products (TPs) in solid samples is an important stage in monitoring of environmental pollution caused by heavy rockets launches. The new method for simultaneous quantification of UDMH TPs in sand samples using vacuum-assisted headspace solid-phase microextraction (Vac-HSSPME) followed by gas chromatography-mass spectrometry (GC-MS) is proposed. Compared to regular HSSPME, Vac-HSSPME yielded 1.3–4.8 times higher responses for NDMA, MTA and PAl. Increasing air-evacuation time from 20 to 120 s at 23 ºC resulted in decreased responses of analytes by 25–46%. Freezing of samples (-30 ºC) had negligible effect on responses of analytes at air-evacuation time 20 s. The best combination of responses of analytes and their RSDs was achieved after air-evacuation of a sample (m = 1.00 g) for 20 s at 23 ºC, incubation for 30 min and 30-min extraction at 40°C by Car/PDMS fiber. Vac-HSSPME provided linear calibration plots in studied ranges of concentrations with coefficients of determination ranging from 0.9912 to 0.9938. The limits of detection for spiked sand samples varied from 0.035 to 3.6 ng g− 1. Spike recoveries of target analytes from sand samples were 84–97% with RSDs 1–11%. The developed method was successfully tested in the experiment on studying losses of analytes from open vials with model sand spiked with UDMH TPs. The developed method can be recommended for analysis of trace concentrations of UDMH TPs when studying their transformation, migration and distribution in contaminated sand.

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Dyes and Biological Stains

2023

Destruction of Hazardous Chemicals in the Laboratory

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Quantification of Transformation Products of Unsymmetrical Dimethylhydrazine in Water Using SPME and GC-MS

Cited by 19 publications

References 12 publications

Investigation on the compositions of unsymmetrical dimethylhydrazine treatment with different oxidants using solid-phase micro-extraction-gas chromatography–mass spectrometer

Investigation on the compositions of unsymmetrical dimethylhydrazine treatment with different oxidants using solid-phase micro-extraction-gas chromatography–mass spectrometer

Quantification of trace transformation products of rocket fuel unsymmetrical dimethylhydrazine in sand using vacuum-assisted headspace solid-phase microextraction

Dyes and Biological Stains

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