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Determination of Polycyclic Aromatic Hydrocarbons in Sludge from Water and Wastewater Treatment Plants by GC-MS

Author

Listed:
  • Chih-Feng Chen

    (Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Yun-Ru Ju

    (Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Yee Cheng Lim

    (Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Shu-Ling Hsieh

    (Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Mei-Ling Tsai

    (Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Pei-Pei Sun

    (Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Ravi Katiyar

    (Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Chiu-Wen Chen

    (Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

  • Cheng-Di Dong

    (Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan)

Abstract

The qualitative and quantitative analysis of 16 polycyclic aromatic hydrocarbons (PAHs) in sludge samples from drinking water treatment plants (DWTP) and wastewater treatment plants (WWTP) were established using gas chromatography–mass spectrometry (GC-MS). The method was suitable to quantify PAHs in the sludge of DWTP and WWTP and it was confirmed by the relevant quality assurance/quality control (QA/QC) procedures. The recovery of individual PAHs in the spiked samples ranged from 74.3% to 108.7%. Detection limits of the analytical procedure were 0.0010–0.0046 mg/kg dw for individual PAHs. This method was used to determine the concentration of PAHs in the selected two DWTP and four WWTP sludge samples. The results showed that the total PAHs (∑PAHs) were in low levels which ranged from 0.0668 to 0.1357 mg/kg dw, and 0.5342–1.0666 mg/kg dw for DWTP and WWTP respectively. The 3- & 4-ring PAHs were predominant in DWTP sludge, ranging from 77.4% to 82.7%; the 4-ring PAHs were predominant in WWTP sludge, ranging from 40.7% to 47.6%. The PAHs of DWTP sludge are mainly composed of 3-ring phenanthrene and anthracene and 4-ring pyrene, and chrysene. The PAHs of WWTP sludge are dominated by 4-ring fluoranthene, pyrene, and chrysene. The detected PAHs concentration should be undoubtedly considered for agriculture in sludge applications based on the limits of the EU regulations. The results of this study can be used for regular monitoring to establish a reference for sludge management and application to agriculture.

Suggested Citation

  • Chih-Feng Chen & Yun-Ru Ju & Yee Cheng Lim & Shu-Ling Hsieh & Mei-Ling Tsai & Pei-Pei Sun & Ravi Katiyar & Chiu-Wen Chen & Cheng-Di Dong, 2019. "Determination of Polycyclic Aromatic Hydrocarbons in Sludge from Water and Wastewater Treatment Plants by GC-MS," IJERPH, MDPI, vol. 16(14), pages 1-13, July.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:14:p:2604-:d:250553
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    References listed on IDEAS

    as
    1. Cheng-Di Dong & Chih-Feng Chen & Chiu-Wen Chen, 2012. "Determination of Polycyclic Aromatic Hydrocarbons in Industrial Harbor Sediments by GC-MS," IJERPH, MDPI, vol. 9(6), pages 1-14, June.
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