Colorimetric method for determination of the nematicide, cadusafos in aqueous medium at different temperature and ph levels (Record no. 59326)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02530cab a2200265Ia 45 0 |
| 001 - CONTROL NUMBER | |
| control field | u209852 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | SIRSI |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 150430s2002 ua ss b eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EAL |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | ara |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | ART JAAR V7 No1 13 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Soltan, H. R. |
| 240 10 - UNIFORM TITLE | |
| Uniform title | Journal of the advances in agricultural researches, 2002 v. 7 (1) |
| Medium | [electronic resource]. |
| 245 10 - TITLE STATEMENT | |
| Title | Colorimetric method for determination of the nematicide, cadusafos in aqueous medium at different temperature and ph levels |
| Medium | [electronic resource] |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | طريقة لونية لتقدير المبيد النيماتودى كاديسفوس فى البيئة المائية على درجات حرارة مختلفة ومستويات مختلفة من الاس الايدروجينى. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | p.183-192. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Includes references. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | A colorimetric method has been developed to determine residues of cadusatos in water. This method is based on the oxidation of sulphur atom in cadusafos or its breakdown product by using concentrated HNO₃ to the corresponding sulphone. Then the oxidation product can readily react with the p-aminobenzene sulfonic acid and 4-aminoantipyrine chromogenic reagents to form a colored compound in alkaline medium with maximum absorption at 580 nm. The relationship between absorbance and concentration of cadusafos is linear and obeys Beer's law in the range of 0.04-1.0 µg/6.65ml solution. The method is sensitive and can be applied to the determination of levels as low as 0.02 µg/ml cadusafos in water. The effect of pH and temperature on cadusafos stability in aqueous solution is also studied. The results indicated that the amount of cadusafos hydrolyzed was temperature dependent rather than pH dependent. The disappearance of cadusatos appeared to follow first order kinetics with different rates. The highest hydrolysis rate was found at 40°c followed by 20°C and the lowest was at 5°c (k = 0.19- 0.20 day⁻¹, 0.15-0.16 day⁻¹ and 0.095- 0.1 day⁻¹, respectively). Rapid hydrolysis rate was obtained at pH 5 and 40°c with short half life (to.5 = 3.31 days) whereas the rate of hydrolysis was slower at pH 6.5 and 5oc (to.5 = 7.27 days). |
| 546 ## - LANGUAGE NOTE | |
| Language note | Summary in Arabic. |
| 596 ## - | |
| -- | 1 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Nematocides |
| General subdivision | Environmental aspects. |
| 650 #3 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | cadusafos. |
| 773 0# - HOST ITEM ENTRY | |
| Title | Journal of the advances in agricultural researches. |
| Related parts | 2002.v.7(1) |
| International Standard Serial Number | 1110-5585 |
| Control subfield | nnas |
| Host Itemnumber | |
| Record control number | u29742 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://nile.enal.sci.eg/EALE/2002/JAAR/702/1/183.pdf">http://nile.enal.sci.eg/EALE/2002/JAAR/702/1/183.pdf</a> |
| Public note | Full Text Article |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Articles |
| Source of classification or shelving scheme | Library of Congress Classification |
No items available.