Etude photophysique et photochimique des herbicides sulfonylurées en milieu aqueux (notice n° 23471)
| 000 -LEADER | |
|---|---|
| fixed length control field | 02378cam a2200349 4500 |
| 001 - CONTROL NUMBER | |
| control field | IMIST |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 110809n mr fre |
| 040 ## - CATALOGING SOURCE | |
| Description conventions | AFNOR |
| 041 1# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | fre |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 668.654 |
| Edition number | 22 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Aziz, Saâdia |
| 245 #0 - TITLE STATEMENT | |
| Title | Etude photophysique et photochimique des herbicides sulfonylurées en milieu aqueux |
| Statement of responsibility, etc | Saâdia,Aziz; Sous la direction Mohammed El Azzouzi |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Rabat |
| Name of publisher, distributor, etc | Université Mohammed V - Agdal, Faculté des Sciences |
| Date of publication, distribution, etc | 2010 |
| 500 ## - GENERAL NOTE | |
| General note | Sous format papier |
| 502 ## - DISSERTATION NOTE | |
| -- | Université Mohammed V - Agdal |
| 505 ## - FORMATTED CONTENTS NOTE | |
| Formatted contents note | The photophysical and photochemical studies of a Sulfonylurea herbicide (thifensulfuron-methyl (TFSM), metsulfuron-methyl (MTSF) and prosulfuron (PRSF), have been investigated in a buffered aqueous solution. In the first part, the influence of pH on the spectroscopic properties was studied. This allowed the determination of the ground and excited state acidity constants. In the second part, the photolysis kinetics was studied as function as oxygen concentrations, using an HPK 125W lamp and followed up by the identification of photoproducts formed under continuous photo-irradiation. The photolysis products were identified by high performance liquid chromatography HPLC-DAD, HPLC-MS and HPLC-MS-MS. In order to obtain a better understanding of the photodegradation mechanism, a laser flash photolysis study was performed. By comparing the quenching rate constant obtained from triplet state quenching by molecular oxygen and from the Stern Volmer relation, the role of the singlet state in the photodegradation process was demonstrated. The photoproducts originating from both singlet and triplet excited states have been identified and hypothetical photodegradation pathways of the herbicides in aqueous solution are proposed. |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Chimie physique |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Sulfonylurée |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Photophysique |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Photochimie |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Photodégradation |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Photolyse laser |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | El Azzouzi, Mohammed |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Zrineh, Abdellah |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mountacer, Hafida |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chovelon, Jean-Marc |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dumas, Stéphane |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | El Hourch, Abderrahim |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Assabbane, Ali |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | El Azzouzi, Mohammed |
| 710 ## - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Université Mohammed V - Agdal |
| Subordinate unit | Faculté des Sciences |
| Withdrawn status | Lost status | Damaged status | Not for loan | Permanent Location | Current Location | Date acquired | Inventory number | Total Checkouts | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
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| La bibliothèque des sciences de l'ingénieur | La bibliothèque des sciences de l'ingénieur | Th-2005 | TH-668.654 AZI | 0000000009673 | 11/25/2016 | 11/25/2016 | Thèse universitaire |