Assessment of organophosphate flame retardants in surface water and sediment from a freshwater environment (Yangtze River, China)
Organophosphate flame retardants (OPFRs) have been detected in the surface water, suspended sediments, and river sediments from the Yangtze River in China. A modified polar organic chemical integrative sampler (m-POCIS) was successfully used to quantify the OPFR concentrations in surface water. The OPFR concentrations estimated by the field m-POCIS at six sampling locations ranged from 8.99 to 112.45 ng/L with an average concentration of 47.04 ng/L. The OPFR concentrations in suspended sediments were related to the sediment particle size distribution. Chlorinated and alkyl OPFRs were the principle compounds in sediments, especially tris(2-chloroisopropyl) phosphate (TCPP) with concentrations of 3.37–29.65 ng/g. The relationship between the OPFR concentrations and total organic carbon (TOC) contents in sediments was examined. The results suggested that the OPFR concentrations were significantly correlated with the TOC contents. The primary OPFR transport mechanism in a freshwater environment occurs in surface water rather than sediment. This was evaluated by the logKow and field sediment-water partition coefficient (logKoc) values between the sediment and water. Finally, the various distributions and transport of OPFRs at the sampling sites indicated that human activities, agricultural production, and wastewater effluents from sewage plants have an important effect on the OPFR levels in a freshwater environment.
KeywordsPOCIS OPFRs Surface water Sediment Transport
The presented study was supported by the National Natural Science Foundation of China (No. 51479067), the Fundamental Research Funds for the Central Universities (No. 2017B13514), and the Project Founded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
- Alvarez, D. A., Petty, J. D., Huckins, J. N., Jones-Lepp, T. L., Getting, D. T., Goddard, J. P., & Manahan, S. E. (2004). Development of a passive, in situ, integrative sampler for hydrophilic organic contaminants in aquatic environments. Environmental Toxicology and Chemistry, 23(7), 1640–1648.CrossRefGoogle Scholar
- Giulivo, M., Capri, E., Kalogianni, E., Milacic, R., Majone, B., Ferrari, F., Eljarrat, E., & Barcelo, D. (2017). Occurrence of halogenated and organophosphate flame retardants in sediment and fish samples from three European river basins. Science of the Total Environment, 586, 782–791.CrossRefGoogle Scholar
- Huckins, J. N., Petty, J. D., Orazio, C. E., Lebo, J. A., Clark, R. C., Gibson, V. L., Gala, W. R., & Echols, K. R. (1999). Determination of uptake kinetics (sampling rates) by lipid-containing semipermeable membrane devices (SPMDs) for polycyclic aromatic hydrocarbons (PAHs) in water. Environmental Science & Technology, 33(21), 3918–3923.CrossRefGoogle Scholar
- Lei, C. (2015). Studies on polybrominated diphenyl ethers and organophosphate esters in sediments of Shanghai, Mater’s Thesis, Shanghai University.Google Scholar
- Ruan, W., Tan, X. X., Luo, X. J., & Mai, B. X. (2014). Organophosphorus flame retardants in surface sediments from Dongjiang River. China Environmental Science, 34(9), 2394–2400.Google Scholar
- WFD, 2000/60/EC. European Commission Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 on establishing a framework for Community action in the field of water policy.Google Scholar
- Zeng, X., He, L., Cao, S., Ma, S., Yu, Z., Gui, H., Sheng, G., & Fu, J. (2014). Occurrence and distribution of organophosphate flame retardants/plasticizers in wastewater treatment plant sludges from the Pearl River Delta, China. Environmental Toxicology and Chemistry, 33(8), 1720–1725.CrossRefGoogle Scholar