الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 132 |  |  |
| | | from | 132 | | |
Abstract
This study focused on the determination of the physicochemical characteristics and the concentration of linear alkyl benzene sulfonates (LAS) for the first time at ten different sites throughout Manzala Lake, Egypt. The results revealed that pH varied from 6.93 to 9.70 and that there was a very significant difference in temperature between the seasons. However, no significant differences were found between lake sites. The highest salinity value was recorded at the southern sites of the lake. The fluctuations of oxidizable organic matter during the four seasons can be arranged as follows: spring> winter > summer > autumn, while the concentrations of LAS fluctuated between 0.08 mg/l and 0.62 mg/l. The highest concentration of LAS was in the summer (1.07 mg/l). The increasing concentration of LAS in the summer may be due to the increase in population density and human activities, leading to an increase in household loading during this season.