Nitrapyrin in streams: The first study documenting off-field transport of a nitrogen stabilizer compound

Environmental Science & Technology Letters
By:

Links

Abstract

Nitrapyrin is a bactericide that is co-applied with fertilizer to prevent nitrification and enhance corn yields. While there have been studies of the environmental fate of nitrapyrin, there is no documentation of its off-field transport to streams. In 2016, 59 water samples from 11 streams across Iowa were analyzed for nitrapyrin and its degradate, 6-chloropicolinic acid (6-CPA), along with three widely used herbicides, acetochlor, atrazine, and metolachlor. Nitrapyrin was detected in seven streams (39% of water samples) with concentrations ranging from 12 to 240 ng/L; 6-CPA was never detected. The herbicides were ubiquitously detected (100% of samples, 28–16000 ng/L). Higher nitrapyrin concentrations in streams were associated with rainfall events following spring fertilizer applications. Nitrapyrin persisted in streams for up to 5 weeks. These results highlight the need for more research focused on the environmental fate and transport of nitrapyrin and the potential toxicity this compound could have on nontarget organisms.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Nitrapyrin in streams: The first study documenting off-field transport of a nitrogen stabilizer compound
Series title Environmental Science & Technology Letters
DOI 10.1021/acs.estlett.6b00348
Volume 3
Issue 11
Year Published 2016
Language English
Publisher American Chemical Society
Contributing office(s) Toxic Substances Hydrology Program, California Water Science Center
Description 6 p.
First page 387
Last page 392