Pesticide degradation and export losses at the catchment scale: Insights from compound-specific isotope analysis (CSIA)
نویسندگان
چکیده
منابع مشابه
Understanding the Causes of Spatial Variation in Pesticide Sorption and Degradation at the Catchment Scale
Intensive agricultural practices and use of pesticides, essential to achieve high crop yields, present particular risks to soil and water resources which sustain life. Degradation and sorption of pesticides in soils are both spatially variable and also among the most sensitive factors determining losses to surface water and groundwater. Currently, no general guidance is available on suitable ap...
متن کاملCompound-specific isotope analysis
The isotopic composition, e.g. 14C/12C, 13C/12C, 2H/1H, 15N/14N and 18O/16O, of matter elements is heterogeneous. It is ruled by physical, chemical and biological mechanisms. Isotopes thus be enable to follow the fate of mineral and organic compounds during biogeochemical transformations. The determination of the isotopic composition of organic substances occurring at trace level into very comp...
متن کاملPrecipitation patterns control the distribution and export of large wood at the catchment scale
Jung Il Seo, Futoshi Nakamura,* Kun Woo Chun, Suk Woo Kim and Gordon E. Grant 1 Department of Forest Resources, College of Industrial Sciences, Kongju National University, 54 Daehakro, Yesan, Chungcheongnamdo, 340-702, Republic of Korea 2 Department of Forest Science, Graduate School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo, Hokkaido 060-8589, Japan 3 Department of ...
متن کاملEnantiomeric separation and compound specific stable isotope analysis
11 A fast and simple method for authenticating raspberry flavors from food products was developed. The two enantiomers 12 of the compound (E)-α-ionone from raspberry flavor were separated on a chiral gas chromatographic column. Based on 13 the ratio of these two enantiomers the naturalness of a raspberry flavor can be evaluated due to the fact that a natural 14 flavor will consist almost exclus...
متن کاملStochastic modeling of diffuse pesticide losses from a small agricultural catchment.
The objective of this study was to identify the main sources of variation in pesticide losses at field and catchment scales using the dual permeability model MACRO. Stochastic simulations of the leaching of the herbicide MCPA (4-chloro-2-methylphenoxyacetic acid) were compared with seven years of measured concentrations in a stream draining a small agricultural catchment and one year of measure...
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ژورنال
عنوان ژورنال: Water Research
سال: 2018
ISSN: 0043-1354
DOI: 10.1016/j.watres.2018.03.061