Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana

David K. Essumang, Albert Eshun, Jonathan N. Hogarh, John K. Bentum, Joseph K. Adjei, Junya Negishi, Shihori Nakamichi, Md Habibullah-Al-Mamun, Shigeki Masunaga

    抄録

    Perfluoroalkyl acids (PFAAs) are persistent environmental pollutants that have been detected in various media including human serum. Due to concerns regarding their bioaccumulation and possible negative health effects, an understanding of routes of human exposure is necessary. PFAAs are recalcitrant in many water treatment processes, making drinking water a potential source of human exposure. This study presents the first report on contamination from PFAAs in river and drinking water in Ghana. The targeted PFAAs were perfluoroalkyl carboxylic acids (PFCAs) with C4–14 carbon chain and perfluoroalkane sulphonic acids (PFSAs) with C6, 8, 10. Five PFAA congeners – PFOA, PFOS, PFHxA, PFDA and PFPeA – were commonly detected in river and tap water. The mean concentrations of ∑ PFAAs in the Kakum and Pra Rivers were 281 and 398 ng/L, while tap water (supplied from the treatment of water from those rivers) contained concentrations of 197 and 200 ng/L, respectively. PFOA and PFOS constituted about 99% of the ∑ PFAAs. The risk quotient (RQ) attributed to drinking of tap water was estimated at 1.01 and 1.74 for PFOA and PFOS, respectively. For a country that has not produced these compounds, the RQs were unexpectedly high, raising concerns particularly about contamination from such emerging pollutants in local water sources. The study revealed limitations of local tap water treatment in getting rid of these emerging pollutants.

    本文言語英語
    ページ(範囲)729-735
    ページ数7
    ジャーナルScience of the Total Environment
    579
    DOI
    ジャーナル掲載日出版済み - 2017 2 1

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    acid
    Acids
    water
    Water
    Rivers
    pollutant
    river
    water treatment
    drinking water
    Water treatment
    Potable water
    Contamination
    carboxylic acid
    drinking
    bioaccumulation
    river water
    serum
    river basin
    carbon
    Bioaccumulation

    Keywords

      ASJC Scopus subject areas

      • Environmental Engineering
      • Environmental Chemistry
      • Waste Management and Disposal
      • Pollution

      これを引用

      Essumang, D. K., Eshun, A., Hogarh, J. N., Bentum, J. K., Adjei, J. K., Negishi, J., ... Masunaga, S. (2017). Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana. Science of the Total Environment, 579, 729-735. DOI: 10.1016/j.scitotenv.2016.11.035

      Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana. / Essumang, David K.; Eshun, Albert; Hogarh, Jonathan N.; Bentum, John K.; Adjei, Joseph K.; Negishi, Junya; Nakamichi, Shihori; Habibullah-Al-Mamun, Md; Masunaga, Shigeki.

      :: Science of the Total Environment, 巻 579, 01.02.2017, p. 729-735.

      研究成果: ジャーナルへの寄稿記事

      Essumang, DK, Eshun, A, Hogarh, JN, Bentum, JK, Adjei, JK, Negishi, J, Nakamichi, S, Habibullah-Al-Mamun, M & Masunaga, S 2017, 'Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana' Science of the Total Environment, 巻 579, pp. 729-735. DOI: 10.1016/j.scitotenv.2016.11.035
      Essumang DK, Eshun A, Hogarh JN, Bentum JK, Adjei JK, Negishi J その他. Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana. Science of the Total Environment. 2017 2 1;579:729-735. 利用可能場所, DOI: 10.1016/j.scitotenv.2016.11.035

      Essumang, David K.; Eshun, Albert; Hogarh, Jonathan N.; Bentum, John K.; Adjei, Joseph K.; Negishi, Junya; Nakamichi, Shihori; Habibullah-Al-Mamun, Md; Masunaga, Shigeki / Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana.

      :: Science of the Total Environment, 巻 579, 01.02.2017, p. 729-735.

      研究成果: ジャーナルへの寄稿記事

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      keywords = "Kakum River, Perfluorinated compounds, Perfluorooctane sulphonate, Perfluorooctanoic acid, Pra River",
      author = "Essumang, {David K.} and Albert Eshun and Hogarh, {Jonathan N.} and Bentum, {John K.} and Adjei, {Joseph K.} and Junya Negishi and Shihori Nakamichi and Md Habibullah-Al-Mamun and Shigeki Masunaga",
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      T1 - Perfluoroalkyl acids (PFAAs) in the Pra and Kakum River basins and associated tap water in Ghana

      AU - Essumang,David K.

      AU - Eshun,Albert

      AU - Hogarh,Jonathan N.

      AU - Bentum,John K.

      AU - Adjei,Joseph K.

      AU - Negishi,Junya

      AU - Nakamichi,Shihori

      AU - Habibullah-Al-Mamun,Md

      AU - Masunaga,Shigeki

      PY - 2017/2/1

      Y1 - 2017/2/1

      N2 - Perfluoroalkyl acids (PFAAs) are persistent environmental pollutants that have been detected in various media including human serum. Due to concerns regarding their bioaccumulation and possible negative health effects, an understanding of routes of human exposure is necessary. PFAAs are recalcitrant in many water treatment processes, making drinking water a potential source of human exposure. This study presents the first report on contamination from PFAAs in river and drinking water in Ghana. The targeted PFAAs were perfluoroalkyl carboxylic acids (PFCAs) with C4–14 carbon chain and perfluoroalkane sulphonic acids (PFSAs) with C6, 8, 10. Five PFAA congeners – PFOA, PFOS, PFHxA, PFDA and PFPeA – were commonly detected in river and tap water. The mean concentrations of ∑ PFAAs in the Kakum and Pra Rivers were 281 and 398 ng/L, while tap water (supplied from the treatment of water from those rivers) contained concentrations of 197 and 200 ng/L, respectively. PFOA and PFOS constituted about 99% of the ∑ PFAAs. The risk quotient (RQ) attributed to drinking of tap water was estimated at 1.01 and 1.74 for PFOA and PFOS, respectively. For a country that has not produced these compounds, the RQs were unexpectedly high, raising concerns particularly about contamination from such emerging pollutants in local water sources. The study revealed limitations of local tap water treatment in getting rid of these emerging pollutants.

      AB - Perfluoroalkyl acids (PFAAs) are persistent environmental pollutants that have been detected in various media including human serum. Due to concerns regarding their bioaccumulation and possible negative health effects, an understanding of routes of human exposure is necessary. PFAAs are recalcitrant in many water treatment processes, making drinking water a potential source of human exposure. This study presents the first report on contamination from PFAAs in river and drinking water in Ghana. The targeted PFAAs were perfluoroalkyl carboxylic acids (PFCAs) with C4–14 carbon chain and perfluoroalkane sulphonic acids (PFSAs) with C6, 8, 10. Five PFAA congeners – PFOA, PFOS, PFHxA, PFDA and PFPeA – were commonly detected in river and tap water. The mean concentrations of ∑ PFAAs in the Kakum and Pra Rivers were 281 and 398 ng/L, while tap water (supplied from the treatment of water from those rivers) contained concentrations of 197 and 200 ng/L, respectively. PFOA and PFOS constituted about 99% of the ∑ PFAAs. The risk quotient (RQ) attributed to drinking of tap water was estimated at 1.01 and 1.74 for PFOA and PFOS, respectively. For a country that has not produced these compounds, the RQs were unexpectedly high, raising concerns particularly about contamination from such emerging pollutants in local water sources. The study revealed limitations of local tap water treatment in getting rid of these emerging pollutants.

      KW - Kakum River

      KW - Perfluorinated compounds

      KW - Perfluorooctane sulphonate

      KW - Perfluorooctanoic acid

      KW - Pra River

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