Interactions between organic model compounds and pesticides with water-soluble soil humic substances

被引：0

作者：

Franco, I ^{[1
]}

Catalano, L ^{[1
]}

Contin, M ^{[1
]}

De Nobili, M ^{[1
]}

机构：

[1] Univ Udine, Dip Prod Vegetale Tecnol Agrarie, I-33100 Udine, Italy

来源：

ACTA HYDROCHIMICA ET HYDROBIOLOGICA | 2001年 / 29卷 / 2-3期

关键词：

sorption; mobility; xenobiotics;

D O I：

10.1002/1521-401X(200109)29:2/3<88::AID-AHEH88>3.0.CO;2-F

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Interactions in solution of both water-soluble and sodium hydroxide extractable humic substances with four model organic compounds of different polarity and four pesticides of different solubility were investigated by size-exclusion chromatography. At neutral or alkaline pH, association occurred only for the most hydrophobic compounds (acridine orange and atrazine) and for bromocresol green, at low pH after charge suppression. The role of humic substances in promoting mobility of xenobiotic substances through the soil and their effect on interaction of xenobiotics with soil components was also examined. Dissolved humic substances enhance removal of hydrophobic xenobiotic compounds from solution by aluminium and iron hydroxides. The presence of humic substances in the solid phase (humified organic matter) also favours sorption of hydrophobic compounds, whereas predominance of non-humic soil organic matter components favour sorption of polar or negatively charged xenobiotic compounds.

引用

页码：88 / 99

页数：12

共 16 条

[1] MOLECULAR-WEIGHT AND SHAPE OF HUMIC ACID FROM SEDIMENTATION AND DIFFUSION MEASUREMENTS ON FRACTIONATED EXTRACTS [J].

CAMERON, RS ;

THORNTON, BK ;

SWIFT, RS ;

POSNER, AM .

JOURNAL OF SOIL SCIENCE, 1972, 23 (04) :394-408

[2] PARTITION-COEFFICIENT AND BIOACCUMULATION OF SELECTED ORGANIC CHEMICALS [J].

CHIOU, CT ;

FREED, VH ;

SCHMEDDING, DW ;

KOHNERT, RL .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1977, 11 (05) :475-478

[3] A COMPARISON OF WATER SOLUBILITY ENHANCEMENTS OF ORGANIC SOLUTES BY AQUATIC HUMIC MATERIALS AND COMMERCIAL HUMIC ACIDS [J].

CHIOU, CT ;

KILE, DE ;

BRINTON, TI ;

MALCOLM, RL ;

LEENHEER, JA ;

MACCARTHY, P .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1987, 21 (12) :1231-1234

[4]

CHIOU CT, 1989, REACTIONS MOVEMENT O, P1

[5]

Franco I, 1997, J SOIL CONTAM, V6, P307, DOI 10.1080/15320389709383567

[6] DISSOLVED ORGANIC-CARBON CONTROL IN ACID FOREST SOILS OF THE FICHTELGEBIRGE (GERMANY) AS REVEALED BY DISTRIBUTION PATTERNS AND STRUCTURAL COMPOSITION ANALYSES [J].

GUGGENBERGER, G ;

ZECH, W .

GEODERMA, 1993, 59 (1-4) :109-129

[7] BATCH VERSUS COLUMN METHOD FOR DETERMINING DISTRIBUTION OF ORGANICS BETWEEN SOIL AND WATER PHASES [J].

JOHNSON, JA ;

FARMER, WJ .

SOIL SCIENCE, 1993, 155 (02) :92-99

[8] EFFECTS OF XAD-8 FRACTIONS OF DISSOLVED ORGANIC-CARBON ON THE SORPTION AND BIOAVAILABILITY OF ORGANIC MICROPOLLUTANTS [J].

KUKKONEN, J ;

MCCARTHY, JF ;

OIKARI, A .

ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1990, 19 (04) :551-557

[9] PARTITIONING OF POLYCYCLIC AROMATIC-HYDROCARBONS (PAH) TO WATER-SOLUBLE SOIL ORGANIC-MATTER [J].

MAXIN, CR ;

KOGELKNABNER, I .

EUROPEAN JOURNAL OF SOIL SCIENCE, 1995, 46 (02) :193-204

[10] REEVALUATION OF PARTITIONING AS A MECHANISM OF NON-IONIC CHEMICALS ADSORPTION IN SOILS [J].

MINGELGRIN, U ;

GERSTL, Z .

JOURNAL OF ENVIRONMENTAL QUALITY, 1983, 12 (01) :1-11

← 1 2 →