Occurrence and distribution of chemical pollutants in Lake Mariut, Egypt

Saad, Massoud A. H.; Elamayem, M. M. Abu; El‐Sebae, A. H.; Sharaf, I. F.

doi:10.1007/bf00283154

Cited by 17 publications

(15 citation statements)

References 1 publication

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“…The level of heavy metals in the lake reached 7.41, 36.14, and 27.12 ppm for Cd, Pb, and Cu, respectively (El-Shehawi et al 2007). As a result, these metals were highly accumulated at significant concentrations in the biota of the lake (Saad et al 1981). A test of samples representing two different basins from the lake showed different effects on the orientation and motility parameters.…”

Section: Discussionmentioning

confidence: 98%

“…Only half of this volume is subjected to primary treatment before it is discarded into the lake (Halim and Abou Shouk 2010). The untreated industrial and sewage wastes have elevated the concentrations of heavy metals, mainly Zn, Fe, Mn, Cd, Pb, and Cu in the water and sediments of Lake Mariout (Saad et al 1981). Pond Rakta is located in the western part of Alexandria; this pond receives untreated waste effluents from the nearby industries.…”

Section: Water Samples From Known Polluted Areasmentioning

confidence: 99%

“…The lake shore is a fishing (mainly Tilapia fish) ground for human consumption mainly for the city of Alexandria (Saad et al 1981). Twothirds of the Alexandria city crude waste water is released into Lake Mariout.…”

Section: Water Samples From Known Polluted Areasmentioning

confidence: 99%

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Monitoring of Waste Water Samples Using the ECOTOX Biosystem and the Flagellate Alga Euglena gracilis

Ahmed

Häder²

2010

Water Air Soil Pollut

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In this study, a fast bioassay using the ECOTOX system to evaluate biological safety of waste water samples from different sources was performed. This biological system works full automatically to test water quality. The system uses the image analysis of movement behavior of the flagellate Euglena gracilis as a model organism. The measured parameters are cell motility, velocity, orientation (r-value, upward swimming and alignment) as well as cell form (compactness). In most tested waste samples, precision of orientation (r-value) is inhibited at concentrations which showed less effect on the other parameters. Motility and compactness were noticed to be the least inhibited parameters in response to waste water samples. The results of waste treatment plants revealed the efficiency of the used purification system. Movement as well as orientation parameters in E. gracilis showed high sensitivity toward chlorine. The order of sensitivity was motility>velocity> r-value>upward swimming with EC 50 values of 0.69, 0.81, 0.85, and 1.78 mgL −1 , respectively. ECOTOX with its test organism (E. gracilis) provides an automatic, fast and sensitive system to monitor water samples.

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Section: Discussionmentioning

confidence: 98%

Section: Water Samples From Known Polluted Areasmentioning

confidence: 99%

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Monitoring of Waste Water Samples Using the ECOTOX Biosystem and the Flagellate Alga Euglena gracilis

Ahmed

Häder²

2010

Water Air Soil Pollut

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“…This reflects the discharge of the industrial and sewage wastes into this sector. Saad et al (1982) have claimed that Tilapia spp. fish in the lake have markedly enhanced concentrations of both heavy metals and organochlorine pesticides.…”

Section: Impact Of Pollution On Fisheries Of Lake Mariutmentioning

confidence: 99%

Impact of Pollution on Productivity and Fisheries of Fisheries of Lake Mariut, Egypt

Khalil

1998

Egypt. J. of Aquatic Biolo. and Fish.

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“…Some of the marshy areas around the basins have been reclaimed for new building as the cities grow. Generally, all published scientific works and particularly those related to chemical pollutants in water (Saad et al 1981(Saad et al , 1984 and in sediment (Saad et al 1985;Abdel-Moati and ElSammak 1997) are restricted to the main basin or Maryut Lake. This is simply because it collects intensive discharge and waste waters from agriculture, urban, and industrial uses.…”

Section: Introductionmentioning

confidence: 99%

Pioneering investigation of the characteristics and elemental concentrations in the environment of the declining Wadi Maryut Lake

Hassan

Badran

2016

Environ Monit Assess

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Wadi Maryut Lake is one of the remaining parts of the ancient Lake Mareotis and is not mentioned in the scientific literature. For the first time, physical and chemical characteristics as well as elemental concentrations in sediment, water, soil, and plants were determined. The lowest metal pollution indices are in the northeastern end of the lake and tend to increase toward the other end. In lake aquatic environment, Al, Fe, K, Mn, Na, B, and Cr are more likely to exist in insoluble form in the southwestern part and in soluble form in the northeastern part. Using different approaches to assess sediment contamination demonstrates that sediments can be categorized as unpolluted. However, the geo-accumulation index suggests that two locations have low anthropogenic influence of Pb and the enrichment factors and the degree of contamination indicate that Co and Pb may be enriched in sediment of some locations. Comparisons with consensus-based sediment quality guidelines revealed that no sample exceeded the probable effect concentration for Cr, Cu, Ni, Pb, and Zn. The most mobile elements in sediment-water and soil-plant systems are Na, K, and Pb. In sediment-water system, Al, Fe, and Mn oxides have the major influence on scavenging of B, K, and Cr. Similarity in the occurrences of Mn, K, and Fe in soil and Mn and Fe in wild plant was found. This work demonstrates the state of decontamination of the lake and confirms its importance as a reference and comparative case for south Mediterranean coastal water bodies.

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Occurrence and distribution of chemical pollutants in Lake Mariut, Egypt

Cited by 17 publications

References 1 publication

Monitoring of Waste Water Samples Using the ECOTOX Biosystem and the Flagellate Alga Euglena gracilis

Monitoring of Waste Water Samples Using the ECOTOX Biosystem and the Flagellate Alga Euglena gracilis

Impact of Pollution on Productivity and Fisheries of Fisheries of Lake Mariut, Egypt

Pioneering investigation of the characteristics and elemental concentrations in the environment of the declining Wadi Maryut Lake

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