Determination of oil and grease in water using the gravimetric technique

The determination of oil and grease in water by gravimetric method is a widely used technique for measuring the concentration of these contaminants in water samples. This method is based on the principle that oil and grease are insoluble in water and can be separated from the water by gravimetric analysis. The first step in the gravimetric method is sample collection. Water samples are typically collected in clean and dry containers to prevent contamination. The samples are then filtered through a glass fiber filter to separate the oil and grease from the water. Once the oil and grease have been collected on the filter, they are dried in an oven at a constant temperature to remove any residual water. The dried filter is then weighed to determine the mass of the oil and grease present in the sample. The next step is to calculate the concentration of oil and grease in the water sample. This is done by dividing the mass of the oil and grease by the volume of water filtered

determination of oil and grease in water by gravimetric method. The result is usually reported in milligrams per liter (mg/L) or parts per million (ppm). It is important to note that the gravimetric method for determining oil and grease in water is sensitive to interferences from other substances that may be present in the sample. To minimize these interferences, it is recommended to use a solvent extraction step before filtering the sample. Overall, the determination of oil and grease in water by gravimetric method is a reliable and accurate technique for measuring the concentration of these contaminants in water samples. By following proper sample collection and analysis procedures, accurate results can be obtained to assess the level of oil and grease pollution in a water body. In conclusion, the gravimetric method for determining oil and grease in water is an important tool for environmental monitoring and water quality assessment. By accurately measuring the concentration of these contaminants, regulatory agencies and industries can take appropriate actions to prevent pollution and protect the environment.