Pesticide adsorption and degradation in fine earth and rock fragments of two soils of different origin

Costantino Vischetti; G Corti; E Monaci; S Cocco; Laura Coppola; A. Agnelli

Pesticide adsorption and degradation in fine earth and rock fragments of two soils of different origin

Costantino Vischetti, G Corti, E Monaci, S Cocco, Laura Coppola, A. Agnelli

Risultato della ricerca: Contributo in rivista › Articolo in rivista

Abstract

Thesoilskeleton(largerthan2mmfraction)canprovideasourceoforganiccarbonwhichmayrepresentan unexploredpossibilityof adsorbinganddegradingpesticides. Thepresentpaperreportsalaboratoryexperimentontheadsorptionofmetobromuronandterbuthylazine ontheskeletonandﬁneearthof twoItaliansoilsderivedfromtwoparentrocks, acalcareousmarl anda sandstone. KFvaluesof1.30and2.22formetobromuronand1.24and2.21forterbuthylazinewerefoundin theﬁneearthofsandstoneandcalcareousmarl, respectively. Surprisingly, thesoil skeleton, intendedasthe 2–10mmfraction, showedagoodadsorptioncapacityof about40%and20%withrespecttotheﬁneearth fractionforsandstoneandcalcareousmarlsoils, respectively. ThederivedKocvaluesfortheskeletonturned outtobemuchhigherthanthoseoftheﬁneearthindicatinganadsorptionactivityoforganiccarboninthe skeletonhigherthanthatof theﬁneearth. Pesticidedegradationfollowedﬁrstorderkineticsinall samplesandhalf-lifevaluesintheskeletonwerein thesamerangeas thoseintheﬁneearthdemonstratingabiodegradationactivityof this substrate. A degradationtrial insterilizedskeletonof thetwosoilssupportsthepreviousstatement, sincedegradation wasalmostabsent. The experiment performed indicated a possible contribution of the soil coarse fraction to pesticide adsorptionanddegradation, helpingintheirdisappearancefromtheenvironment.

Lingua originale	English
pagine (da-a)	348-352
Numero di pagine	5
Rivista	Geoderma
Stato di pubblicazione	Pubblicato - 2010
Pubblicato esternamente	Sì

Keywords

Adsorption
Degradation
Pesticides

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title = "Pesticide adsorption and degradation in fine earth and rock fragments of two soils of different origin",

abstract = "Thesoilskeleton(largerthan2mmfraction)canprovideasourceoforganiccarbonwhichmayrepresentan unexploredpossibilityof adsorbinganddegradingpesticides. Thepresentpaperreportsalaboratoryexperimentontheadsorptionofmetobromuronandterbuthylazine ontheskeletonandﬁneearthof twoItaliansoilsderivedfromtwoparentrocks, acalcareousmarl anda sandstone. KFvaluesof1.30and2.22formetobromuronand1.24and2.21forterbuthylazinewerefoundin theﬁneearthofsandstoneandcalcareousmarl, respectively. Surprisingly, thesoil skeleton, intendedasthe 2–10mmfraction, showedagoodadsorptioncapacityof about40%and20%withrespecttotheﬁneearth fractionforsandstoneandcalcareousmarlsoils, respectively. ThederivedKocvaluesfortheskeletonturned outtobemuchhigherthanthoseoftheﬁneearthindicatinganadsorptionactivityoforganiccarboninthe skeletonhigherthanthatof theﬁneearth. Pesticidedegradationfollowedﬁrstorderkineticsinall samplesandhalf-lifevaluesintheskeletonwerein thesamerangeas thoseintheﬁneearthdemonstratingabiodegradationactivityof this substrate. A degradationtrial insterilizedskeletonof thetwosoilssupportsthepreviousstatement, sincedegradation wasalmostabsent. The experiment performed indicated a possible contribution of the soil coarse fraction to pesticide adsorptionanddegradation, helpingintheirdisappearancefromtheenvironment.",

keywords = "Adsorption, Degradation, Pesticides, Adsorption, Degradation, Pesticides",

author = "Costantino Vischetti and G Corti and E Monaci and S Cocco and Laura Coppola and A. Agnelli",

year = "2010",

language = "English",

pages = "348--352",

journal = "Geoderma",

issn = "0016-7061",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Pesticide adsorption and degradation in fine earth and rock fragments of two soils of different origin

AU - Vischetti, Costantino

AU - Corti, G

AU - Monaci, E

AU - Cocco, S

AU - Coppola, Laura

AU - Agnelli, A.

PY - 2010

Y1 - 2010

N2 - Thesoilskeleton(largerthan2mmfraction)canprovideasourceoforganiccarbonwhichmayrepresentan unexploredpossibilityof adsorbinganddegradingpesticides. Thepresentpaperreportsalaboratoryexperimentontheadsorptionofmetobromuronandterbuthylazine ontheskeletonandﬁneearthof twoItaliansoilsderivedfromtwoparentrocks, acalcareousmarl anda sandstone. KFvaluesof1.30and2.22formetobromuronand1.24and2.21forterbuthylazinewerefoundin theﬁneearthofsandstoneandcalcareousmarl, respectively. Surprisingly, thesoil skeleton, intendedasthe 2–10mmfraction, showedagoodadsorptioncapacityof about40%and20%withrespecttotheﬁneearth fractionforsandstoneandcalcareousmarlsoils, respectively. ThederivedKocvaluesfortheskeletonturned outtobemuchhigherthanthoseoftheﬁneearthindicatinganadsorptionactivityoforganiccarboninthe skeletonhigherthanthatof theﬁneearth. Pesticidedegradationfollowedﬁrstorderkineticsinall samplesandhalf-lifevaluesintheskeletonwerein thesamerangeas thoseintheﬁneearthdemonstratingabiodegradationactivityof this substrate. A degradationtrial insterilizedskeletonof thetwosoilssupportsthepreviousstatement, sincedegradation wasalmostabsent. The experiment performed indicated a possible contribution of the soil coarse fraction to pesticide adsorptionanddegradation, helpingintheirdisappearancefromtheenvironment.

AB - Thesoilskeleton(largerthan2mmfraction)canprovideasourceoforganiccarbonwhichmayrepresentan unexploredpossibilityof adsorbinganddegradingpesticides. Thepresentpaperreportsalaboratoryexperimentontheadsorptionofmetobromuronandterbuthylazine ontheskeletonandﬁneearthof twoItaliansoilsderivedfromtwoparentrocks, acalcareousmarl anda sandstone. KFvaluesof1.30and2.22formetobromuronand1.24and2.21forterbuthylazinewerefoundin theﬁneearthofsandstoneandcalcareousmarl, respectively. Surprisingly, thesoil skeleton, intendedasthe 2–10mmfraction, showedagoodadsorptioncapacityof about40%and20%withrespecttotheﬁneearth fractionforsandstoneandcalcareousmarlsoils, respectively. ThederivedKocvaluesfortheskeletonturned outtobemuchhigherthanthoseoftheﬁneearthindicatinganadsorptionactivityoforganiccarboninthe skeletonhigherthanthatof theﬁneearth. Pesticidedegradationfollowedﬁrstorderkineticsinall samplesandhalf-lifevaluesintheskeletonwerein thesamerangeas thoseintheﬁneearthdemonstratingabiodegradationactivityof this substrate. A degradationtrial insterilizedskeletonof thetwosoilssupportsthepreviousstatement, sincedegradation wasalmostabsent. The experiment performed indicated a possible contribution of the soil coarse fraction to pesticide adsorptionanddegradation, helpingintheirdisappearancefromtheenvironment.

KW - Adsorption

KW - Degradation

KW - Pesticides

KW - Adsorption

KW - Degradation

KW - Pesticides

UR - http://hdl.handle.net/10807/8689

M3 - Article

SN - 0016-7061

SP - 348

EP - 352

JO - Geoderma

JF - Geoderma

ER -

Pesticide adsorption and degradation in fine earth and rock fragments of two soils of different origin

Abstract

Keywords

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