Development of passive samplers for in situ measurement of pyrethroid insecticides in surface water. (May 2017)

• Record Type: Journal Article
• Authors: Xue, Jiaying; Liao, Chunyang; Wang, Jie; Cryder, Zachary; Xu, Tianbo; Liu, Fengmao; Gan, Jay
• Is Part Of: Environmental pollution. Volume 224(2017)
• Page Start: 516
• Page End: 523
• Publication Date: 2017-05
• Subjects: Bioavailability -- Passive sampler -- Pyrethroids -- Performance reference compounds -- Polyethylene sampling device (PED) -- In situ sampling; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2017.02.034
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Pyrethroid insecticides are widely used in urban environments, and their occurrence has been recently associated with aquatic toxicity in urban surface streams. Synthetic pyrethroids are strongly hydrophobic compounds, highlighting the importance of the freely dissolved concentration ( C free ), rather than the total chemical concentration, for better prediction of potential effects in aquatic ecosystems. The goal of this study was to develop a simple, robust and field-applicable passive sampling methodology that may be used for in situ monitoring of trace levels of pyrethroids in surface water. Among a range of polymer films, polyethylene film (PE) was found to be the most efficient at absorbing pyrethroids from water. To circumvent the long equilibrium time, 13 C-permethrin and bifenthrin- d 5 were preloaded on the PE sampler as performance reference compounds (PRC). Desorption of isotope-labeled PRCs was found to be isotropic to the absorption of target analytes. The optimized method was first tested in large circulating tanks simulating various environmental conditions. The derived C free values were consistently smaller than the total aqueous concentration in salt water or water containing humic acids. The PE samplers were further deployed at multiple field sites for 7 d in Southern California and analysis demonstrated good monitoring reproducibility and sensitivity under ambient environmental conditions. The developed passive sampler approach is ideal for application for in situ sampling under field conditions, and the use of PRCs allows sampling with short and flexible time intervals. Graphical abstract: Highlights: A PRC-PE passive sampler was developed to measure C free of pyrethroids in water. The sampler was verified under simulating conditions and field conditions. The detection limit of this sampler was at 1 ng/L. The PRC-PE sampler may be used for in situ monitoring. Abstract : A simple, robust and field-applicable passive sampling methodology based on preloaded PE film was developed for in situ monitoring of pyrethroids in surface water.