Re-evaluation of groundwater monitoring data for glyphosate and bentazone by taking detection limits into account
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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Re-evaluation of groundwater monitoring data for glyphosate and bentazone by taking detection limits into account. / Hansen, Claus Toni; Ritz, Christian; Gerhard, Daniel; Jensen, Jens Erik; Streibig, Jens Carl.
I: Science of the Total Environment, Bind 536, 2015, s. 68-71.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Re-evaluation of groundwater monitoring data for glyphosate and bentazone by taking detection limits into account
AU - Hansen, Claus Toni
AU - Ritz, Christian
AU - Gerhard, Daniel
AU - Jensen, Jens Erik
AU - Streibig, Jens Carl
N1 - CURIS 2015 NEXS 254
PY - 2015
Y1 - 2015
N2 - Current regulatory assessment of pesticide contamination of Danish groundwater is exclusively based on samples with pesticide concentrations above detection limit. Here we demonstrate that a realistic quantification of pesticide contamination requires the inclusion of "non-detect" samples i.e. samples with concentrations below the detection limit, as left-censored observations. The median calculated pesticide concentrations are shown to be reduced 10(4) to 10(5) fold for two representative herbicides (glyphosate and bentazone) relative to the median concentrations based upon observations above detection limits alone.
AB - Current regulatory assessment of pesticide contamination of Danish groundwater is exclusively based on samples with pesticide concentrations above detection limit. Here we demonstrate that a realistic quantification of pesticide contamination requires the inclusion of "non-detect" samples i.e. samples with concentrations below the detection limit, as left-censored observations. The median calculated pesticide concentrations are shown to be reduced 10(4) to 10(5) fold for two representative herbicides (glyphosate and bentazone) relative to the median concentrations based upon observations above detection limits alone.
U2 - 10.1016/j.scitotenv.2015.07.047
DO - 10.1016/j.scitotenv.2015.07.047
M3 - Journal article
C2 - 26196070
VL - 536
SP - 68
EP - 71
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
ER -
ID: 142020676