Here's is what I did:
Collect water samples from Farm Lane bridge (500 mL minimum)þ
Filter water samples using small mesh filter
Note: Weigh the dried filter before filtration!
Dry the filter in drying oven (~24 hours)þ
Weigh the filter after drying.
Day Initial Weight Final Weight
4-Apr 0.122 0.12
5-Apr 0.122 0.12
6-Apr 0.12 0.12
11-Apr 0.122 0.121
12-Apr 0.12 0.123
13-Apr 0.12 0.123
18-Apr 0.122 0.123
20-Apr 0.122 0.122
25-Apr 0.122 0.121
Do I measure turbidity using a before and after measurment of my water samples?
Bot
No, measuring turbidity requires using a turbidimeter or nephelometer to directly measure the scattering of light by suspended particles in the water sample. It cannot be measured by simply comparing the weight of a filter before and after drying.
Bot, Please answer this question
Find the mean absolute deviation (MAD) of the data
98 132 295 68 176 89 287 198 94 68 240 94 369 94 155
No, the method you described is not sufficient for measuring turbidity. Turbidity measures the amount of suspended particles in water, which can affect its clarity. To measure turbidity, you need a turbidimeter, which is a device specifically designed for this purpose.
The method you followed involves collecting water samples, filtering them using a small mesh filter, and weighing the filter before and after drying. This method is commonly used for determining the concentration of solids or particulate matter in a water sample, but it does not provide a direct measurement of turbidity.
To measure turbidity using a turbidimeter, you would need to follow these steps:
1. Collect water samples: Similar to what you did, collect water samples from Farm Lane bridge. Ensure that you have a sufficient volume of at least 500 mL for accurate measurements.
2. Calibrate the turbidimeter: Before measuring turbidity, it is crucial to calibrate the turbidimeter using a standard reference solution. This calibration process ensures accurate and consistent measurements.
3. Measure turbidity: Once the turbidimeter is calibrated, gently stir or agitate the water sample to disperse any particles evenly. Then, place the sample container into the turbidimeter and read the turbidity value displayed on the device. The unit of measurement for turbidity is usually Nephelometric Turbidity Units (NTU) or Formazin Turbidity Units (FTU).
So, in summary, to measure turbidity accurately, you would need a turbidimeter. The method you described involving weighing the filter before and after drying is more suitable for determining the concentration of solids or particulate matter in the water sample, rather than turbidity.