Abstract

Occurrence and fate of six neonicotinoids (imidacloprid, clothianidin, acetamiprid, thiamethoxam, thiacloprid, and dinotefuran) and one degradate (acetamiprid-N-desmethyl) were studied in a United States municipal wastewater treatment plant (WWTP) and an engineered wetland downstream. Flow-weighted samples collected in a five-day monitoring campaign were analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS) using methods of isotope dilution and standard addition. Three of the six neonicotinoids were detected. Daily loads of imidacloprid and acetamiprid were stable, whereas those of clothianidin varied. Detected 5-day average concentrations in WWTP influent and effluent were 54.7 ± 9.3 and 48.6 ± 8.4 ng/L for imidacloprid, 3.7 ± 0.8 and 1.7 ± 0.5 ng/L for acetamiprid, and 149.7 ± 273.1 and 116.7 ± 144.9 ng/L for clothianidin, respectively. Concentrations of neonicotinoids in digested sludge were below the limit of detection (<2 μg/kg dry weight). Wetland monitoring revealed lack of removal for imidacloprid and acetamiprid. Hazard quotient (HQ) analysis showed values of larger than unity for imidacloprid (1.4 ± 0.1) and total neonicotinoids (4.8 ± 4.5) in WWTP effluent. Thus, imidacloprid, acetamiprid, and clothianidin were shown to occur in United States wastewater, persist during conventional and wetland treatment, and to pose potential risk in effluent-dominated, receiving surface waters.

Original languageEnglish (US)
Title of host publicationAssessing Transformation Products of Chemicals by Non-Target and Suspect Screening - Strategies and Workflows, Volume 1
PublisherAmerican Chemical Society
Pages121-131
Number of pages11
Volume1241
ISBN (Electronic)9780841231931
DOIs
StatePublished - 2016

Publication series

NameACS Symposium Series
Volume1241
ISSN (Print)00976156
ISSN (Electronic)19475918

Fingerprint

Wetlands
Pesticides
Wastewater treatment
Effluents
Wastewater
Value engineering
Monitoring
Liquid chromatography
Surface waters
Dilution
Isotopes
Mass spectrometry
Hazards
imidacloprid
acetamiprid
((E)-1-(2-chloro-1,3-thiazol-5-ylmethyl)-3-methyl-2-nitroguanidine)

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Sadaria, A. M., Supowit, S. D., & Halden, R. (2016). Fate of Neonicotinoid Pesticides during Wastewater and Wetland Treatment. In Assessing Transformation Products of Chemicals by Non-Target and Suspect Screening - Strategies and Workflows, Volume 1 (Vol. 1241, pp. 121-131). (ACS Symposium Series; Vol. 1241). American Chemical Society. https://doi.org/10.1021/bk-2016-1241.ch008

Fate of Neonicotinoid Pesticides during Wastewater and Wetland Treatment. / Sadaria, Akash M.; Supowit, Samuel D.; Halden, Rolf.

Assessing Transformation Products of Chemicals by Non-Target and Suspect Screening - Strategies and Workflows, Volume 1. Vol. 1241 American Chemical Society, 2016. p. 121-131 (ACS Symposium Series; Vol. 1241).

Research output: Chapter in Book/Report/Conference proceedingChapter

Sadaria, AM, Supowit, SD & Halden, R 2016, Fate of Neonicotinoid Pesticides during Wastewater and Wetland Treatment. in Assessing Transformation Products of Chemicals by Non-Target and Suspect Screening - Strategies and Workflows, Volume 1. vol. 1241, ACS Symposium Series, vol. 1241, American Chemical Society, pp. 121-131. https://doi.org/10.1021/bk-2016-1241.ch008
Sadaria AM, Supowit SD, Halden R. Fate of Neonicotinoid Pesticides during Wastewater and Wetland Treatment. In Assessing Transformation Products of Chemicals by Non-Target and Suspect Screening - Strategies and Workflows, Volume 1. Vol. 1241. American Chemical Society. 2016. p. 121-131. (ACS Symposium Series). https://doi.org/10.1021/bk-2016-1241.ch008
Sadaria, Akash M. ; Supowit, Samuel D. ; Halden, Rolf. / Fate of Neonicotinoid Pesticides during Wastewater and Wetland Treatment. Assessing Transformation Products of Chemicals by Non-Target and Suspect Screening - Strategies and Workflows, Volume 1. Vol. 1241 American Chemical Society, 2016. pp. 121-131 (ACS Symposium Series).
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