Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Stephen J. Kalkhoff"'
Autor:
Miya N. Barr, Stephen J. Kalkhoff
Publikováno v:
Scientific Investigations Report.
Publikováno v:
Scientific Investigations Report.
Autor:
Stephen J. Kalkhoff
Publikováno v:
Scientific Investigations Report.
Publikováno v:
Science of The Total Environment. 559:53-62
Precipitation patterns and nutrient inputs affect transport of nitrate (NO3-N) and phosphorus (TP) from Midwest watersheds. Nutrient concentrations and yields from two subsurface-drained watersheds, the Little Cobb River (LCR) in southern Minnesota a
Autor:
Stephen J. Kalkhoff
Publikováno v:
Scientific Investigations Report.
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Stephen J. Kalkhoff
Publikováno v:
Data Series.
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Stephen J. Kalkhoff, Dennis R. Helsel, Sarah J. Stetson, Richard B. Wanty, Donald L. Macalady
Publikováno v:
Analytica Chimica Acta. 567:108-113
Perchlorate ion (ClO 4 − ) is an environmental contaminant of growing concern due to its potential human health effects, impact on aquatic and land animals, and widespread occurrence throughout the United States. The determination of perchlorate ca
Publikováno v:
Journal of the American Water Resources Association. 39:743-756
Most herbicides applied to crops are adsorbed by plants or transformed (degraded) in the soil, but small fractions are lost from fields and either move to streams in overland runoff, near surface flow, or subsurface drains, or they infiltrate slowly