Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry
ObjectiveTo establish a method for the determination of several kinds of pyrethroids and organochlorine pesticides in Chinese oolong tea samples based on liquid-liquid extraction-solid phase extraction-gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS).MethodsOolong tea sa...
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| Format: | Article |
| Language: | zho |
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The Editorial Office of Chinese Journal of Food Hygiene
2021-07-01
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| Series: | Zhongguo shipin weisheng zazhi |
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| Online Access: | http://www.zgspws.com/zgspwszz/article/abstract/20210405?st=article_issue |
| _version_ | 1797976220816637952 |
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| author | ZHU Pan WAN Huan LV Fen YAO Jing LONG Chaoyang HUANG Weixiong WU Yongning |
| author_facet | ZHU Pan WAN Huan LV Fen YAO Jing LONG Chaoyang HUANG Weixiong WU Yongning |
| author_sort | ZHU Pan |
| collection | DOAJ |
| description | ObjectiveTo establish a method for the determination of several kinds of pyrethroids and organochlorine pesticides in Chinese oolong tea samples based on liquid-liquid extraction-solid phase extraction-gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS).MethodsOolong tea samples were crushed and screened, soaked in boiling water, extracted with acetone-n-hexane, purified by Carb-NH2 column, and then identified and quantified by GC-NCI-MS.ResultsAll the 18 kinds of pyrethroids and 9 kinds of organochlorine pesticides showed good linear relationships in range of 0.006-1.00 μg/mL and 0.006-0.50 μg/mL respectively, and the correlation coefficients were above 0.996. The recoveries at different spiked levels for all target compounds in blank matrices were 60.1%-119.8%, and the relative standard deviation (RSD) were 1.5%-10.4% (n=6). The limits of detection and quantification of the method were 0.5-4.8 μg/kg and 1.7-16.0 μg/kg, respectively.ConclusionThe method was suitable for rapid screening and analysis of 18 pyrethroids and 9 organochlorine pesticides in Chinese oolong tea with the advantage of accuracy, rapidity and high sensitivity. |
| first_indexed | 2024-04-11T04:47:38Z |
| format | Article |
| id | doaj.art-44f24c691c254fe7afd6291fb110c2f3 |
| institution | Directory Open Access Journal |
| issn | 1004-8456 |
| language | zho |
| last_indexed | 2024-04-11T04:47:38Z |
| publishDate | 2021-07-01 |
| publisher | The Editorial Office of Chinese Journal of Food Hygiene |
| record_format | Article |
| series | Zhongguo shipin weisheng zazhi |
| spelling | doaj.art-44f24c691c254fe7afd6291fb110c2f32022-12-27T09:23:55ZzhoThe Editorial Office of Chinese Journal of Food HygieneZhongguo shipin weisheng zazhi1004-84562021-07-01330441542210.13590/j.cjfh.2021.04.0051004-8456(2021)04-0415-08Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometryZHU Pan0WAN Huan1LV Fen2YAO Jing3LONG Chaoyang4HUANG Weixiong5WU Yongning6Guangdong Provincial Center for Disease Control and Prevention, Guangdong Guangzhou 511430, ChinaThe College of Natural Resources and Environment, South China Agricultural University, Guangdong Guangzhou 510642, ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangdong Guangzhou 511430, ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangdong Guangzhou 511430, ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangdong Guangzhou 511430, ChinaGuangdong Provincial Center for Disease Control and Prevention, Guangdong Guangzhou 511430, ChinaNational Center for Food Safety Risk Assessment, Beijing 100021, ChinaObjectiveTo establish a method for the determination of several kinds of pyrethroids and organochlorine pesticides in Chinese oolong tea samples based on liquid-liquid extraction-solid phase extraction-gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS).MethodsOolong tea samples were crushed and screened, soaked in boiling water, extracted with acetone-n-hexane, purified by Carb-NH2 column, and then identified and quantified by GC-NCI-MS.ResultsAll the 18 kinds of pyrethroids and 9 kinds of organochlorine pesticides showed good linear relationships in range of 0.006-1.00 μg/mL and 0.006-0.50 μg/mL respectively, and the correlation coefficients were above 0.996. The recoveries at different spiked levels for all target compounds in blank matrices were 60.1%-119.8%, and the relative standard deviation (RSD) were 1.5%-10.4% (n=6). The limits of detection and quantification of the method were 0.5-4.8 μg/kg and 1.7-16.0 μg/kg, respectively.ConclusionThe method was suitable for rapid screening and analysis of 18 pyrethroids and 9 organochlorine pesticides in Chinese oolong tea with the advantage of accuracy, rapidity and high sensitivity.http://www.zgspws.com/zgspwszz/article/abstract/20210405?st=article_issuegas chromatography-negative chemical ionization-mass spectrometryoolong teapyrethroidsorganochllorine pesticides |
| spellingShingle | ZHU Pan WAN Huan LV Fen YAO Jing LONG Chaoyang HUANG Weixiong WU Yongning Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry Zhongguo shipin weisheng zazhi gas chromatography-negative chemical ionization-mass spectrometry oolong tea pyrethroids organochllorine pesticides |
| title | Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry |
| title_full | Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry |
| title_fullStr | Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry |
| title_full_unstemmed | Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry |
| title_short | Determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography-negative chemical ionization-mass spectrometry |
| title_sort | determination of pyrethroids and organochlorine pesticides in oolong tea by gas chromatography negative chemical ionization mass spectrometry |
| topic | gas chromatography-negative chemical ionization-mass spectrometry oolong tea pyrethroids organochllorine pesticides |
| url | http://www.zgspws.com/zgspwszz/article/abstract/20210405?st=article_issue |
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