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78.For the determination of calcium in the air of a cem
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last one 02.04.2020
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Uploaded: 05.08.2019
Content: 78.rar 8,7 kB
Refunds: 0
Uploaded: 05.08.2019
Content: 78.rar 8,7 kB
Product description
78.For the determination of calcium in the air of a cement plant, an air sample of 100 was taken. Air passed through an acid trap. As a result, the analyzed solution with a volume of 500.00 ml was obtained. For the determination of calcium used the method of comparison. A standard solution of calcium with a concentration of 0.050 μg / ml had a radiation intensity of 16 units. The radiation intensity of the analyzed solution was found to be 35 units. Determine the calcium concentration in the air (mg / l).
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