Sorption and desorption of the herbicide alachlor on humic acid fractions from two vermicomposts

被引：17

作者：

Alves, MR ^{[1
]}

Landgraf, MD ^{[1
]}

Rezende, MOO ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Chem, BR-13560970 Sao Paulo, Brazil

来源：

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES | 2001年 / 36卷 / 06期

关键词：

humic acids; organic matter; vermicompost; alachlor; desorption;

D O I：

10.1081/PFC-100107413

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present study focuses on the analysis of two vermicomposts, that have been used as alternative sources of restitution of soil organic matter, as well as sources of nutrient replacements. For this purpose, two samples of vermicomposts from different Brazilian regions (Sao Carlos-SP and Londrina-PR) were characterized according to their humic acid content. Both samples had a pH value near 7.0, and the humic acids present showed high cationic exchange capacities and low values for the C/N ratios. The infrared spectra showed bands that suggested the presence of aliphatic and aromatic components bound to phenolic, carboxylic and amide groups. The effect of vermicompost added to soil on the application of alachlor was evaluated. Alachlor sorption, Freundlich isotherms and alachlor desorption curves in the soil matrix and the vermicompost/soil mixture matrix were determined.

引用

页码：797 / 808

页数：12

共 42 条

[1] VARIABILITY IN THE MEASUREMENT OF HUMIC CARBOXYL CONTENT [J].

BONN, BA ;

FISH, W .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (02) :232-240

[2]

CALVET R, 1989, ENVIRON HEALTH PERSP, V83, P145, DOI 10.2307/3430653

[3] Herbicide movement and dissipation at four midwestern sites [J].

Clay, SA ;

Dowdy, RH ;

Lamb, JA ;

Anderson, JL ;

Lowery, B ;

Knighton, RE ;

Clay, DE .

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES, 2000, 35 (03) :259-278

[4] Sorption and degradation of alachlor in soil and aquifer material [J].

Clay, SA ;

Moorman, TB ;

Clay, DE ;

Scholes, KA .

JOURNAL OF ENVIRONMENTAL QUALITY, 1997, 26 (05) :1348-1353

[5] Leaching properties of some degradation products of alachlor and metolachlor [J].

Fava, L ;

Bottoni, P ;

Crobe, A ;

Funari, E .

CHEMOSPHERE, 2000, 41 (09) :1503-1508

[6] Acid-base characterization of molecular weight fractionated humic acid [J].

Fukushima, M ;

Tanaka, S ;

Nakamura, H ;

Ito, S .

TALANTA, 1996, 43 (03) :383-390

[7]

Gibbs MH, 1996, ENVIRON TOXICOL CHEM, V15, P360, DOI [10.1897/1551-5028(1996)015&lt

[8]

0360:AMFASE&gt

[9]

2.3.CO

[10]

2, 10.1002/etc.5620150321]

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