Premium
Agrichemical Detection in a Shallow Unconfined Aquifer as Influenced by Sampling Technique
Author(s) -
Clay D. E.,
Holman P. W.,
Clay S. A.,
Schumacher T. E.,
Scholes K. A.,
Bender A. R.
Publication year - 1994
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1994.03615995005800010014x
Subject(s) - aquifer , atrazine , hydrology (agriculture) , sampling (signal processing) , environmental science , contamination , groundwater , soil science , geology , environmental chemistry , pesticide , geotechnical engineering , chemistry , ecology , filter (signal processing) , computer science , computer vision , biology
The sample collection system may influence the ability to describe the complex temporal and spatial variation of contaminants within an aquifer. The objective of this study was to evaluate the probability of detecting atrazine (2‐chloro‐4‐ethylamino‐6‐isopropylamino‐1,3,5‐triazine) using a bailer or skimmer in an unconfined aquifer located below an atrazine‐treated surface soil. In the simulated aquifer, the surface skimmer collected more Br − than the fixed sampling port located 15 cm below the aquifer surface and bailer. In the unconfined aquifer, the probability of an atrazine detection was higher when samples were collected with a surface skimmer tban a bailer. These results suggest that the ability to determine vertical transport of contaminants from surface soil to shallow aquifers at the point of agrichemical application is dependent on surface sampling of the aquifer.