Presentation on theme: "Research Team: Rammou Anna Kalafati Alexiana Basileiadou Lena"— Presentation transcript:
1 Research Team: Rammou Anna Kalafati Alexiana Basileiadou Lena Sea Pollution of the Gulf of Elefsina (Thriassio Pedio area, Attiki, Greece)Research Team:Rammou AnnaKalafati AlexianaBasileiadou Lena
2 AIMS WATER QUALITY IN INDUSTRIAL AND URBAN AREAS AROUND ATHENS 2. SOURCES OF POLLUTION, THE CONSEQUENCES OF POLLUTANTS ON MARINE LIFE AND HUMANS3. SUGGESTIONS AND SOLUTIONS4. COMPARISON OF RESULTS WITH THE FOREIGN STUDENTS
4 EXPERIMENTAL INVESTIGATION Two areas of the region were sampled, at Aspropyrgos (a heavily polluted area) and at Loutropyrgos (less polluted area).The water samples were analysed for suspended solids, nitrates (NO2-) and chlorophyll by the University Lab.
7 Suspended solids (SS)The samples size was two (2) litres of water from Aspropyrgo and Loutropyrgo.Dry filter papers in oven at 103 °C – 105 °C and then weight to the nearest milligram and record the mass (Mfilter).Filtrate the sampleDry the filtrated filter papers in ovenWeight to the nearest milligram and record the mass (Mdried_filter).Mfilter + Mss = Mdried_filter and Mss = Mdried_filter –Mfilter
9 Nitrates Spectrophotometric method. Addition to the samples of various solutions to form colour.Prepare three standard solutions of NO2- of 0.1, 0.2 and 0.3 μg/lMeasure of absorbtion by a spectrophotometer of the standard solutions and the samples.
10 How absorbtion(Α) is connected with concetration (c)? HYPOTHETICAL FACT: Α=axc+b(a, b=ct)Concentration NO2(μg/l)Absorbtion0.10.09220.20.15720.30.2863
12 That’s the linear relationship we are looking for: y=0,4726x+0,0525 Consequently: Α=0.4726c (1)SampleAbsorbtionAverageAspropyrgos1st calculation:0.05462nd calculation:0.05260.0536Loutropyrgos1st calculation:0.05712nd calculation:0.05410.0556
13 Nitrates We solve the relationship (1): c=A-0.0525/0.4726 RESULTSSampleNitrates, mg/lAspropyrgos0.0023Loutropyrgos0.0065
14 Chlorophyll Filtrate two (2) litres of water sample from each area. HomogenisationAdd ml of acetoneCentrifuge at 3000 rounds/ min for ten (10) minutes.2 wavelengths (665 nm and 750 nm)cell’s light path: 5 cmHCL: 8drops
16 CAUSES OF POLLUTION - LITERATURE REVIEW INDUSTRY:STEEL INDUSTRIES (HALIVOURGIKI)OIL REFINERIESSHIP YARDSAghios Georgios creek (Tannery)Landfill of Ano LiosiaSewage Sludge (Psittalia)
17 IMPLICATIONS IMPLICATIONS FOR HUMAN HEALTH SKIN DISEASESCANCERMENTAL RETARDNESSIMPLICATIONS FOR THE ENVIRONMENTREDUCTION OF PLANGTONREDUCTION OF DISSOLVED OXYGENEYTROPHICATIONIMPLICATIONS FOR MARINE ORGANISMSDESTRUCTION OF ALGAELACK OF FOOD FOR MARINE ORGANISMS