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Determination of 2,8-dichlorodibenzo-p-dioxin in toothpaste and mouthwash consumer products using GC-MS

Environmental Science and Pollution Research volume 22, pages 18927–18932 (2015)Cite this article

Abstract

A gas chromatography–mass spectrometry (GC-MS) method was developed for the identification and quantification of 2,8-dichlorodibenzo-p-dioxin (2,8-DCDD) in toothpaste and mouthwash consumer products. Liquid–liquid extraction and solid-phase extraction were used in the sample preparation. The limit of detection was 0.96 ng/g in toothpaste and 0.83 ng/g in mouthwash. The accuracy represented by relative errors was less than 12.5 %. The intra-day and inter-day precision, which are represented by the relative standard deviation values, were within 11.2 and 10.6 %, respectively. The method was successfully applied to analyze 2,8-DCDD in toothpaste and mouthwash products, as well as that from the photo-degradation of triclosan spiked in both sample matrix.

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Acknowledgments

This study was supported by the National Natural Science Foundation of China (21175025) and Faculty Research Grant from Hong Kong Baptist University (FRG2/12-13/032).

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Affiliations

  1. State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong, SAR, China

    Jianlin Wu, Chuanqin Hu, Zongwei Cai & Di Hu

  2. School of Food and Chemical Engineering, Beijing Technology and Business University, Beijing, China

    Chuanqin Hu

  3. California Department of Public Health, Richmond, CA, 94564, USA

    Charlie Li

Authors
  1. Jianlin Wu
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  2. Chuanqin Hu
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  3. Charlie Li
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  4. Zongwei Cai
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  5. Di Hu
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Corresponding authors

Correspondence to Zongwei Cai or Di Hu.

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Responsible editor: Ester Heath

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Wu, J., Hu, C., Li, C. et al. Determination of 2,8-dichlorodibenzo-p-dioxin in toothpaste and mouthwash consumer products using GC-MS. Environ Sci Pollut Res 22, 18927–18932 (2015). https://doi.org/10.1007/s11356-015-5015-4

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  • DOI: https://doi.org/10.1007/s11356-015-5015-4

Keywords

  • 2,8-dichlorodibenzo-p-dioxin (2,8-DCDD)
  • Toothpaste
  • Mouthwash
  • Gas chromatography–mass spectrometry