Summary of Determinación de sólidos en agua | | UPV

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This video explains how to determine the presence of solids in water samples by measuring the total, suspended, and dissolved solids. First, the total solids are evaporated and weighed. Then, the suspended solids are filtered and weighed. Finally, the dissolved solids are filtered and weighed.

• 00:00:00 In this video, you will learn how to determine the presence of solids in water samples. The goal is to learn how to quantify the different fractions of solids present in water, that is, total suspended and dissolved solids. The total solids are those that remain after evaporating a known volume of water between 103 and 105 degrees Celsius. Total solids present in a water sample are divided into two fractions, the first of which is based on the suspended solids. These correspond to the fraction of total solids that remains retained in a 1.2 micron filter size. The second fraction are the dissolved solids, which correspond to the fraction of total solids that passes through a 12 micron filter. The material necessary for the quantification of the different fractions of solids in water is a 150 milliliters capsule of porcelain. Filters of 12 micron size filter are necessary to measure the total solids present in water. Disposable needles for manipulating filtering equipment and a glass jar with a vacuum pump are also necessary. The determination of the total solids is performed by evaporation and weight for this, the porcelain capsule is dried in an oven at 105 degrees Celsius for
• 00:05:00 In this video, the user connects to the water pump and filters all the water until the filter begins to dry. This can be easily seen by the variation in sediment brightness. The filter is then removed carefully and placed on the porcelana capsule. This is inserted into the oven at 105 degrees for two hours. Once dry, it is inserted into the dryer for its cooling and finally weighed. To calculate the suspended solids, we apply the following formula to the sample water example: 800 mg/L of suspended solids. For dissolved solids, the process is the same as was used in the determination of total solids. For dissolved solids, the filter from the total solids determination is used, which evaporates in a porcelana capsule and subsequently dries to a constant weight. For the sample water example, the suspended solids are determined to be 800 mg/L and the dissolved solids are determined to be 178 mg/L. The total solids would be the sum of these two fractions, so by difference we can obtain the other fraction. This video has taught us how to quantify the different fractions of solids present in a sample of water. Total solids, suspended solids, and dissolved