Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry
BACKGROUNDPyridine, aniline, and nitrobenzene are important chemical raw materials with low boiling point and strong polarity. They are highly susceptible to enter environmental water and cause pollution. Printing and dyeing wastewater with a complex matrix contains various carcinogenic nitrogen-con...
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Science Press, PR China
2023-08-01
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| Online Access: | http://www.ykcs.ac.cn/article/doi/10.15898/j.ykcs.202303280041 |
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| author | Yue WU Yongzhong LAI Guoyong LU Xiaosheng LIN Shusheng LIANG Wenshuai XU |
| author_facet | Yue WU Yongzhong LAI Guoyong LU Xiaosheng LIN Shusheng LIANG Wenshuai XU |
| author_sort | Yue WU |
| collection | DOAJ |
| description | BACKGROUNDPyridine, aniline, and nitrobenzene are important chemical raw materials with low boiling point and strong polarity. They are highly susceptible to enter environmental water and cause pollution. Printing and dyeing wastewater with a complex matrix contains various carcinogenic nitrogen-containing organic pollutants, such as pyridine, aniline, and nitrobenzene. Printing and dyeing wastewater discharging into the environment is harmful to human health through the food chain. The simultaneous detection method of pyridine, aniline, and nitrobenzene in environmental water is necessary.OBJECTIVESTo establish an analytical method based on headspace gas chromatography-mass spectrometry for the simultaneous determination of pyridine, aniline, and nitrobenzene in water.METHODSThe contents of pyridine, aniline, and nitrobenzene in the effluents from the wastewater treatment plants in the textile industry parks were detected and quantified by the external standard method with headspace gas chromatography-mass spectrometry method. Finally, the experiment conditions were optimized.RESULTSThe results showed that the linear ranges of pyridine and aniline were between 1.00µg/L and 30.0µg/L, and nitrobenzene was in the mass concentration range of 0.50-15.0µg/L, with the correlation coefficient above 0.992. The limits of detection were 0.15-0.93µg/L. The concentrations of pyridine, aniline and nitrobenzene in the effluents of the wastewater treatment plant in the textile industry parks were detected from 1.10µg/L to 1.13µg/L, from 1.71µg/L to 5.36µg/L and from ND to 0.19µg/L, respectively. The average recoveries of samples from laboratory blanks and wastewater treatment plant effluents at three levels of addition were 73.6% to 105.8% and 67.2% to 89.9%, respectively, with relative standard deviations of 5.9% to 14.2% (n=8) and 2.2% to 11.5% (n=6). The process and conditions of headspace are summarized as follows: 10.0mL of sample was placed into a 20mL headspace bottle containing 4.0g Na2CO3, and then 50µL methanol was added; the equilibration time of the headspace sampler was 60 min, and the equilibrium temperature was 80℃.CONCLUSIONSSome measures are conductive to improving the sensitivity of the method, such as addition of methanol and sodium carbonate, and increasing the sample equilibrium temperature, in order to reduce the dissolved concentrations of the targets in the water and improve the precipitation effect of the targets. This method improves the detection efficiency, and is of significance for the simultaneous monitoring of pyridine, aniline, and nitrobenzene in printing and dyeing wastewater. |
| format | Article |
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| institution | DOAJ |
| issn | 0254-5357 |
| language | English |
| publishDate | 2023-08-01 |
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| spelling | doaj-art-41e1ed92d3fb4fecb6c57d6c032f82412025-08-20T02:52:48ZengScience Press, PR ChinaYankuang ceshi0254-53572023-08-0142478179210.15898/j.ykcs.202303280041yk202303280041Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass SpectrometryYue WU0Yongzhong LAI1Guoyong LU2Xiaosheng LIN3Shusheng LIANG4Wenshuai XU5Department of Ecological Construction, Shantou Polytechnic, Shantou 515041, ChinaInstitute of Marine Science, Shantou University, Shantou 515063, ChinaShantou Ecological and Environment Monitoring Center Station of Guangdong Province, Shantou 515041, ChinaShantou Ecological and Environment Monitoring Center Station of Guangdong Province, Shantou 515041, ChinaShantou Ecological and Environment Monitoring Center Station of Guangdong Province, Shantou 515041, ChinaShantou Ecological and Environment Monitoring Center Station of Guangdong Province, Shantou 515041, ChinaBACKGROUNDPyridine, aniline, and nitrobenzene are important chemical raw materials with low boiling point and strong polarity. They are highly susceptible to enter environmental water and cause pollution. Printing and dyeing wastewater with a complex matrix contains various carcinogenic nitrogen-containing organic pollutants, such as pyridine, aniline, and nitrobenzene. Printing and dyeing wastewater discharging into the environment is harmful to human health through the food chain. The simultaneous detection method of pyridine, aniline, and nitrobenzene in environmental water is necessary.OBJECTIVESTo establish an analytical method based on headspace gas chromatography-mass spectrometry for the simultaneous determination of pyridine, aniline, and nitrobenzene in water.METHODSThe contents of pyridine, aniline, and nitrobenzene in the effluents from the wastewater treatment plants in the textile industry parks were detected and quantified by the external standard method with headspace gas chromatography-mass spectrometry method. Finally, the experiment conditions were optimized.RESULTSThe results showed that the linear ranges of pyridine and aniline were between 1.00µg/L and 30.0µg/L, and nitrobenzene was in the mass concentration range of 0.50-15.0µg/L, with the correlation coefficient above 0.992. The limits of detection were 0.15-0.93µg/L. The concentrations of pyridine, aniline and nitrobenzene in the effluents of the wastewater treatment plant in the textile industry parks were detected from 1.10µg/L to 1.13µg/L, from 1.71µg/L to 5.36µg/L and from ND to 0.19µg/L, respectively. The average recoveries of samples from laboratory blanks and wastewater treatment plant effluents at three levels of addition were 73.6% to 105.8% and 67.2% to 89.9%, respectively, with relative standard deviations of 5.9% to 14.2% (n=8) and 2.2% to 11.5% (n=6). The process and conditions of headspace are summarized as follows: 10.0mL of sample was placed into a 20mL headspace bottle containing 4.0g Na2CO3, and then 50µL methanol was added; the equilibration time of the headspace sampler was 60 min, and the equilibrium temperature was 80℃.CONCLUSIONSSome measures are conductive to improving the sensitivity of the method, such as addition of methanol and sodium carbonate, and increasing the sample equilibrium temperature, in order to reduce the dissolved concentrations of the targets in the water and improve the precipitation effect of the targets. This method improves the detection efficiency, and is of significance for the simultaneous monitoring of pyridine, aniline, and nitrobenzene in printing and dyeing wastewater.http://www.ykcs.ac.cn/article/doi/10.15898/j.ykcs.202303280041headspace gas chromatography-mass spectrometrypyridineanilinenitrobenzeneprinting and dyeing wastewater |
| spellingShingle | Yue WU Yongzhong LAI Guoyong LU Xiaosheng LIN Shusheng LIANG Wenshuai XU Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry Yankuang ceshi headspace gas chromatography-mass spectrometry pyridine aniline nitrobenzene printing and dyeing wastewater |
| title | Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry |
| title_full | Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry |
| title_fullStr | Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry |
| title_full_unstemmed | Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry |
| title_short | Simultaneous Determination of Pyridine, Aniline and Nitrobenzene in Printing and Dyeing Wastewater by Headspace Gas Chromatography-Mass Spectrometry |
| title_sort | simultaneous determination of pyridine aniline and nitrobenzene in printing and dyeing wastewater by headspace gas chromatography mass spectrometry |
| topic | headspace gas chromatography-mass spectrometry pyridine aniline nitrobenzene printing and dyeing wastewater |
| url | http://www.ykcs.ac.cn/article/doi/10.15898/j.ykcs.202303280041 |
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