Adsorption behavior of herbicide butachlor on typical soils in China and humic acids from the soil samples

Xu, Dong; Xu, Zhonghou; Zhu, Songming; Cao, Yunzhe; Wang, Yu; Du, Xiaoming; Gu, Qingbao; Li, Fasheng

doi:10.1016/j.jcis.2004.11.034

Cited by 41 publications

(19 citation statements)

References 18 publications

(19 reference statements)

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“…The molecular OM and its complex structure influence the behavior of fluridone and norflurazon, providing greater sorption (Sun et al, 2012). In China, the amount of sorption of butachlor in soils (1.50 a 4.78% de OM) was positively correlated with the OM content of the soil (Xu et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Sorption of oxadiazon in soils cultivated in the brazilian cerrado

et al. 2014

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-The objective of this study was to evaluate oxadiazon sorption in different soils of the Brazilian Cerrado, highlighting the correlations of lethal doses of this herbicide capable of inhibiting 50% of the dry matter accumulation of the bio-indicator (LD50) among the chemical characteristics of the soil and its direct and indirect effects. The experiment was carried out in a greenhouse in a randomized block design and four repetitions. Each experimental unit consisted of a pot with increasing rates of oxadiazon and oat (Avena sativa), as the bio-indicator species. For sorption evaluation, washed sand and 22 soils (substrates) from Cerrado Brazilian's Alliaceae cultivated areas were used. LD50 and sorption ratio (SR) = [(LD50soil -LD50sand)/ LD50sand] to the substrates were determined. Pearson correlation analysis was performed between the chemical characteristics of the substrates and the LD50 of oxadiazon. A path analysis was quantified, to deploy only the significant correlations estimated in direct and indirect effects of the characters on LD50, which is a basic variable. A more pronounced LD50 (528.09 g ha -1 ) for the Cerrado soil sample resulted in higher SR (> 53.00), while in the washed sand substrate, LD50 corresponded only to 9.74 g ha -1 of the oxadiazon (available in soil). It was concluded that oxadiazon sorption is influenced by the chemical characteristics of the soils, highlighting the correlation with pH (CaCl 2 ), magnesium content, aluminum, organic matter, organic carbon, and aluminum saturation.Keywords: bioassay, neutral herbicide, organic matter. RESUMO -Objetivou-se neste estudo avaliar a sorção do oxadiazon em diferentes solos do Cerrado Brasileiro, destacando as correlações da dose letal do herbicida capaz de inibir 50% do acúmulo da massa seca do bioindicador (DL50) entre as características químicas do solo e seus efeitos diretos e indiretos. O experimento foi realizado em casa de vegetação, com delineamento em blocos casualizados com quatro repetições. Cada unidade experimental foi constituída de um vaso com doses crescentes do oxadiazon; utilizou-se a aveia (Avena

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Section: Resultsmentioning

confidence: 99%

Sorption of oxadiazon in soils cultivated in the brazilian cerrado

et al. 2014

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“…After interaction with DBSA, the C-O stretching of the polysaccharides or polysaccharide-like substances at 1045 cm -1 was shifted towards a lower wavenumber (1036 cm -1 ) , which indicated that H bonds could be formed during the sorption of DBSA and HAs molecules. Several similar sorption experiments demonstrated the formation of H bonds during the sorption of some pesticides with humic substances (HS), such as the sorption of butachlor on HAs (Xu et al 2005) and the sorption of s-triazine on HS (Senesi et al 1987). However, FTIR spectra have rarely been applied to study the sorption of surfactants.…”

Section: Sorption Mechanism Of the Dbsa On Hasmentioning

confidence: 99%

Sorption behavior of dodecylbenzene sulfonic acid on humic acids from Mollisol and Alluvial soils

Zhao

Song³

et al. 2016

Environ Earth Sci

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Dodecylbenzene sulfonic acid (DBSA), the acid form of sodium dodecylbenzenesulfonate (SDBS), is often identified and detected in soils. However, it still has less awareness of the sorption behavior of DBSA with soil organic matter. In this paper, the sorption behaviors of DBSA on two different types of soils (Mollisol and Alluvial soils) and soil humic acids (HAs) were studied and compared, and the mechanisms of HAs and DBSA interactions were discussed. Sorption dynamics and isotherms were studied using the batch equilibrium method. The sorption kinetics was relatively slow, and the sorption equilibrium can be reached within 10 h. In the designed concentration range of DBSA in this work, the maximum DBSA sorption capacities on the Alluvial soil HA (AHA) and the Mollisol soil HA (MHA) were 115.0 and 112.2 mg/ g, respectively, which were higher than those of the Alluvial soil (AS) and Mollisol soil (MS). The sorption isotherms were well fitted by the Freundlich equation. The sorption capacity of the AHA was greater than that of the MHA, AS and MS. Furthermore, the sorption complexes of HAs and DBSA were characterized using elemental analysis, micro-Fourier transform infrared spectroscopy (FTIR), solid-state 13 C nuclear magnetic resonance (NMR) spectroscopy and electron spin resonance spectroscopy (ESR), it reveals that the sorption of DBSA on HAs mainly occurred on the C=O, C-O and aromatic functional groups. Moreover, the sorption data indicated that the sorption behavior was complicated, probably due to the formation of H bonds, hydrophobic interactions and electron donoracceptor mechanisms.

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“…kaolin, bentonite and montmorillonite and their respective organoclays can be applied efficiently for the removal of poor water soluble pesticide from aquifers. Xu et al (2005) studied the adsorption behavior of butachlor using humic acids (HAs) from three different soils in China. HAs from different soils exhibited different butachlor adsorption capacities based on their carbonyl group.…”

Section: Available Butachlor Remediation Strategies Adsorptionmentioning

confidence: 99%

Addressing the environmental impacts of butachlor and the available remediation strategies: a systematic review

Abigail

Samuel

Ramalingam

2015

Int. J. Environ. Sci. Technol.

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Butachlor, a chloroacetanilide herbicide, used extensively all over the world as pre-emergence control of unwanted weeds. As a consequence, concerns about its potential adverse effects on the ecosystem and toxicity have risen. Several techniques have been used or are being investigated for effective removal of butachlor from the contaminated sites. This review reports the various toxicological studies conducted so far on the butachlor and the removal technologies available for its decontamination for better understanding. A new insight was also proposed after critical analysis of the merits and demerits of the removal technologies elucidated in the literature. An attempt was made to summarize the currently available analytical techniques reported for determination of butachlor in the environmental samples.

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Adsorption behavior of herbicide butachlor on typical soils in China and humic acids from the soil samples

Cited by 41 publications

References 18 publications

Sorption of oxadiazon in soils cultivated in the brazilian cerrado

Sorption of oxadiazon in soils cultivated in the brazilian cerrado

Sorption behavior of dodecylbenzene sulfonic acid on humic acids from Mollisol and Alluvial soils

Addressing the environmental impacts of butachlor and the available remediation strategies: a systematic review

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