Modification of clay barriers with a cationic surfactant to improve the retention of pesticides in soils (Record no. 48616)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02671nam a2200277Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625153941.0 |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | B-14426 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Modification of clay barriers with a cationic surfactant to improve the retention of pesticides in soils |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Journal of Hazardous Materials, 139(2), p.363-372, 2007 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | In this work, the efficiency of reactive clay barriers in the immobilisation of organic pesticides in a sandy soil was studied. Reactive barriers were prepared by modification of montmorillonite, kaolinite and palygorskite clay minerals, and of a clayey soil with the cationic surfactant octadecyltrimethylammonium bromide (ODTMA). Percolation curves of the pesticides linuron, atrazine and metalaxyl of different hydrophobic character, were obtained in columns packed with a natural sandy soil with these barriers intercalated under saturated flowconditions. The cumulative curves in the unmodified soil indicated a leaching of pesticides greater than 85 percent of the total amount of compound added. After barrier intercalation, the breakthrough curves (BTC)indicated a dramatic decrease in the amounts of linuron leached in all columns and a significant modification of the leaching kinetics of atrazine and metalaxyl. Retardation factors, R, of the pesticides in the columns were significantly correlated with the organic matter content (OM)derived from the ODTMA of the organo clay/soil barriers (r2 .0.78). Significant correlations were also found between these R factors and the pore volume values corresponding to the maximum peaks of the BTCs (r2 = 0.83; p < 0.01)or the total volumes leached (r2 = 0.44; p < 0.05)for the pesticides atrazine and metalaxyl. The results obtained point to the interest in the use of reactive clay barriers for almost complete immobilisation of hydrophobic pesticides or for decreasing the leaching of moderately hydrophobic pesticides coming from point-like sources of pollution. These barriers would avoid the generation of elevated concentrations of these compounds in the soils due to their rapid washing. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | PESTICIDES |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | LEACHING |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | SOIL COLUMN |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | REACTIVE BARRIER |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | ORGANO CLAY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | ORGANO SOIL |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rodríguez-Cruz,M.S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sánchez-Martín, M.J. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Andrades, M.S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sánchez-Camazano, M. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1-g2lIvkN1fyB6CZHcK2fYpbWBjHbj8BS/view?usp=drivesdk">https://drive.google.com/file/d/1-g2lIvkN1fyB6CZHcK2fYpbWBjHbj8BS/view?usp=drivesdk</a> |
| Public note | Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Clasificación local |
| Koha item type | Documentos solicitados |
| Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-14426 | 25.06.2025 | 25.06.2025 | Documentos solicitados |