Occurrence, distributions, and transport of herbicides and their degradation products in the Lower Mississippi River and its tributaries

Pereira, Wilfred E.; Rostad, Colleen E.

doi:10.1021/es00079a015

Cited by 239 publications

(138 citation statements)

References 7 publications

(7 reference statements)

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“…The multiple-year data sets for the LAPU in various watersheds come from the NASQAN and NAWQA programs and from the literature (11,14,27,31,(39)(40)(41)(42)(43). The yearto-year variability in LAPU can be substantial.…”

Section: Discussionmentioning

confidence: 99%

Effect of Scale on the Behavior of Atrazine in Surface Waters

Capel

Larson

2001

Environ. Sci. Technol.

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Field runoff is an important transport mechanism by which agricultural pesticides, including atrazine, move into the hydrologic environment. Atrazine is chosen because it is widely used, is transported in runoff relatively easily, is widely observed in surface waters, and has relatively little loss in the stream network. Data on runoff of atrazine from experimental plot and field studies is combined with annual estimates of load in numerous streams and rivers, resulting in a data set with 408 observations that span 14 orders of magnitude in area. The load as a percent of use (LAPU) on an annual basis is the parameter that is compared among the studies. There is no difference in the mean or range of LAPU values for areas from the size of experimental field plots (g0.000023 ha) and small watersheds (<100 000 ha). The relatively invariant LAPU value observed across a large range of watershed areas implies that the characteristics of atrazine itself (application method and chemical properties) are important in determining the extent of runoff. The variable influences on the extent of runoff from individual watershed characteristics and weather events are superimposed on the relatively invariant LAPU value observed across the range of watershed areas. The results from this study establish the direct relevance for agricultural field plot studies to watershed studies across the full range of scale.

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Section: Discussionmentioning

confidence: 99%

Effect of Scale on the Behavior of Atrazine in Surface Waters

Capel

Larson

2001

Environ. Sci. Technol.

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“…Due to its widespread use, long-term persistence in soil, greater leaching potential and relatively high solubility in water, atrazine is frequently detected in ground, surface and drinking waters [2,3]. Although atrazine is toxic to animals [4] and humans [5] and its use has been banned in European Union countries since 2003 [6], this chlorotriazine herbicide still remains in use in China.…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetics, isotherms and thermodynamics of atrazine on surface oxidized multiwalled carbon nanotubes

Chen

Shan

Zhou

et al. 2009

Journal of Hazardous Materials

142

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a b s t r a c tThe adsorption kinetics, isotherms and thermodynamic of atrazine on multiwalled carbon nanotubes (MWCNTs) containing 0.85%, 2.16%, and 7.07% oxygen was studied. Kinetic analyses were performed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. The regression results showed that the pseudo-second-order law fit the adsorption kinetics. The calculated thermodynamic parameters indicated that adsorption of atrazine on MWCNTs was spontaneous and exothermic. Standard free energy ( G 0 ) became less negative when the oxygen content of MWCNTs increased from 0.85% to 7.07% which is consistent with the low adsorption affinity of MWCNTs for atrazine.

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“…Em amostras de água subterrânea de 4 estados nos Estados Unidos, foi constatado a presença do fungicida clorotalonil e de seu metabólito hidroxiclorotalonil, que é 30 vezes mais tóxico para mamíferos que a própria molécula original (Cox, 1997). A atrazina e seus metabólitos desetilatrazina (DEA) e desisopropilatrazina (DIA) foram encontradas em amostras de água do rio Mississippi (Pereira & Rostad, 1990). …”

Section: Movimentação No Perfil Do Solo -Lixiviaçãounclassified

Comportamento do glifosato no solo e deslocamento miscível de atrazina

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Occurrence, distributions, and transport of herbicides and their degradation products in the Lower Mississippi River and its tributaries

Cited by 239 publications

References 7 publications

Effect of Scale on the Behavior of Atrazine in Surface Waters

Effect of Scale on the Behavior of Atrazine in Surface Waters

Adsorption kinetics, isotherms and thermodynamics of atrazine on surface oxidized multiwalled carbon nanotubes

Comportamento do glifosato no solo e deslocamento miscível de atrazina

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