Effets of Bromine Shock in Spa Water溴休克温泉水的影响.docVIP

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Effets of Bromine Shock in Spa Water溴休克温泉水的影响.doc

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Effets of Bromine Shock in Spa Water溴休克温泉水的影响

Effects of Bromine Shock in Spa Water Justin Heilicher, 2003 Abstract: I varied the temperatures of spa water samples (36.0°C, 38.0°C, 40.0°C) to determine how temperature would effect the concentration of bromine. When the temperature increased, the concentration of bromine varied with no direct relationship at 36.0°C the average bromine concentration was 1.93 g/L, at 38.0°C the concentration was 1.91 g/L, at 40.0°C the concentration was 1.93 g/L. Then I added shock at the same temperatures. With shock the concentration of the bromine increased at higher temperatures in a range of 1.91 g/L to 1.99 g/L. So, shock works better at higher temperatures. Purpose: The purpose of this project was to determine what would happen to the concentration of bromine at different temperatures and what would happen when bromine shock was added to samples of spa water at these different temperatures: (36°C, 38°C, 40°C) Hypothesis: I believed that the concentration of bromine would decrease as the temperature increases, because when the temperature increases the evaporation rate increases. Therefore, the concentration of the bromine must decrease when more evaporation is occurring. I also believed that once the temperature increase reaches 39°C-40°C the concentration of the bromine will decrease when shock is added. The reason for is from the MSDS HyperGlossary: Oxidation, “Either way, you can not create energy from nothing. Whenever something is oxidized, something else must undergo the opposite, reduction” (1). Shock is an oxidizer and in most cases the oxidizer decreases the substance or solution, therefore I assume that the shock will decrease the concentration of the bromine. Background: Bromine (Br2) is used for many different size spas today, the reason why consumers use bromine is because bromine is 2.25 times more concentrated than chlorine and at a pH of 7.5 the disinfectant power of bromine is about 94%. Bromine, like chlorine, cannot be protected from ultraviolet light (U