Part 2: week five in lab- measure the change in concentration of dye in the reservoir with time for a set inflow and starting volume Part 1: week four in lab - use a spectrophotometer and a standard curve to measure the level of dye in water The water coming in has no pollutant and the concentration of the pollutant in the water flowing out is equal to the concentration of pollutant in the reservoir and is constantly decreasing. As clean water flows in, polluted water flows out. You will be starting with a simple example of a reservoir of water that contains a low concentration of pollutant. In each of these cases there is a major carrier flow which is tied to the transfer of another element, molecule or heat to or from the environment.

carbon-monoxide pollution as a function of car traffic.

the production of air-borne mercury as a consequence of burning coal.

the concentration of a drug in a patient following a particular dose.

the flow of nutrients and energy in food to an animal and the loss of heat.

A similar approach could be used to follow other environmental systems, such as: It does this by keeping track of the flow of water, the concentration and flow of pollutant, and how the two flows (water and pollutant) are related. This exercise illustrates a mass balance approach for following a potential pollutant as it is diluted out of a reservoir of water. Hopefully, this new direction will reduce the initial amount of pollution generated.Д®ven if humans 'reduce, reuse and recycle' there will still be many pollutants that need to be tracked. Now we recognize that some of these efforts were damaging and have taken up a new slogan 'reduce, reuse, recycle'. These included taller smokestacks and pumps and diffusers for water-borne wastes. Strategies for dispersion used technologies that would be able to dump high quantities of waste at the lowest concentrations near by. None-the-less there were many aspects of sewer treatment and industrial combustion waste that were treated by dispersing pollutants into the water or air. Although this phrase had a nice ring to it, there were many problems that cropped up. Way back, when I was in grad school, the 'solution to pollution was dilution'.

Serial dilution lab conclusion