Today soils for sample one were tested for pH, presence of salt and moisture content. Also the testing for the waters turbidity was done today. Here are the results;
To finish up the testing for the water samples, the turbidity test was carried out today. It was done using a turbidimeter Here are the results;
Turbidity
|
Test 1 (NTU)
|
Test 2(NTU)
|
Average (NTU)
|
Area 1
|
2.4
|
2.2
|
2.3
|
Area 2
|
4.1
|
3.8
|
3.95
|
Area 3
|
1.3
|
1.1
|
1.2
|
 |
| This is the Turbidimeter in which the turbidity of the water samples was taken. |
Soil Testing;Results
To test for pH and the salinity of the soil, the soil had to be mixed with distilled water. This mixture of soil and distilled water was then mixed firmly and put through filter water. This provide a liquid with the same nutrients etc, of the soil which could be tested by the equipment.
The pH of the soil was taken using a pH probe. A photo of for reference is in the other sampling blog.
pH
|
Test 1
|
Test 2
|
Average
|
Area 1
|
6.3
|
6.2
|
6.25
|
Area 2
|
6.7
|
6.7
|
6.7
|
Area 3
|
6.7
|
6.9
|
6.8
|
The testing for the salinity/salt content of the water was done using a conductivity probe. First we tested if silver chloride was present when a few drops of silver nitrate was placed into the water. The silver nitrate showed that area 1 was higher in salt content followed closely by area 2. Area 3 which was secluded had the least amount of salt present.
Testing for the salinity of the soil
|
1
|
2
|
Average
|
Area 1
|
156
|
158
|
157
|
Area 2
|
146
|
144
|
145
|
Area 3
|
102
|
112
|
107
|
 |
| Conductivity Probe |
The moisture test was done though the heating of the soil. Firstly the soil was weighed while moisture was still present. After the soil had been in an oven roughly over 100 degrees Celsius for around 4 hours the soil was re-weighed.
Moisture test
|
Weight before being heated (g)
|
Weight after being heated (g)
|
Moisture content that was lost (g)
|
Area 1
|
57.3
|
55.55
|
1.75
|
Area 2
|
57.55
|
54.85
|
2.7
|
Area 3
|
49.98
|
48.2
|
1.78
|
 |
| An example of the re-weighing of the soil. This photo was taken whilst the scale was still processing the final weight. |
everything looks on track. Good work Tim
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