Pesticide processing potential in prairie pothole porewaters

Teng Zeng, Kate L. Ziegelgruber, Yu Ping Chin, William A. Arnold

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

Prairie pothole lakes (PPLs) are located within the extensively farmed Great Plains region of North America, and many are negatively impacted by nonpoint source pesticide pollution. To date, the environmental fate of pesticides in these lakes remains largely unknown. In this study, two PPLs in the Cottonwood Lake area of North Dakota were sampled, and transformations of four chloroacetanilide pesticides in sediment porewaters were examined. The reduced sulfur species in the porewaters, such as bisulfide (HS-) and polysulfides (Sn2-), readily transformed the target pesticides into sulfur-substituted products. Although HS- and S n2- played a dominant role, other reactive constituents in PPL porewaters also contributed to the transformation. Results from this study revealed that abiotic reactions with reduced sulfur species could represent an important removal pathway for pesticides entering PPLs.

Original languageEnglish (US)
Pages (from-to)6814-6822
Number of pages9
JournalEnvironmental Science and Technology
Volume45
Issue number16
DOIs
StatePublished - Aug 15 2011
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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