Abstract

Our research question was to investigate the extent of the pollution in West Lake using Biology, Chemistry, Physics and ESS. In Physics we investigated the relationship between pollution in the water and its conductivity. We found that there is a relationship between pollution in the water and its conductivity. In Biology we examined the nitrate concentration in West Lake to determine the level of pollution comparing to the results of June 1969. We found that there is a higher level of nitrate in West Lake in 2012, showing that West Lake is polluted. In Biology we also compared the water in West Lake to distilled water and tap water to see what the degree of bacteria growth is. Our observations show that the bacteria levels in samples from West Lake were much higher than in the tap and distilled water samples, which therefore indicates to higher pollution levels in West Lake. In ESS we investigated pH value of West Lake affect biodiversity, are the pH levels of West Lake suitable for the Hanoi West Lake. The results showed that pH levels were suitable for what fish can tolerate how if it were to affect the biodiversity it would be due to the fact that the water is mainly basic. And in Chemistry we investigated how the pollution affects the amounts of dissolved oxygen in the water. The results of the lab shows that the dissolved oxygen concentration is below the dissolved oxygen level of a good quaility water being 9 to 8 ppm. The results instead were around 3.9 ppm to 4.1 ppm even below the dissolved oxygen level of water which is considered polluted that is 4.5 ppm. Showing that the pollution level of the lake is high. Therefore, having conducted all of these separate experiments it can be concluded that Hanoi West Lake is polluted.
 * Group 2**