Copper is widely found in the air, soil and water environment, and is an important component of proteins and enzymes in the body.If our body is deficient in copper it will lead to decreased hematopoietic function, elevated cholesterol, decreased enzyme activity, and a much higher likelihood of producing diseases such as coronary heart disease.
If there is an excess of copper, it will not work either, it will cause serious damage to cell membranes and can cause copper toxicity, diarrhea, hair loss and other diseases.
Today, let’s learn how to detect copper in sewage? Generally, flame atomic absorption spectrometry is used for analytical determination. This detection method has high sensitivity, low detection limit, good selectivity and low interference.
Preparation before the test：
Test instrument: Flame atomic absorption spectrometer
Accessories: hollow cathode lamp
Reagent: Cu
Experimental method：
1.Set up the working parameters of the instrument according to the test requirements.
2.Make the standard curve and sample determination.
Add 1+1HNO3 to each of the four stoppered test tubes.
Detection of copper in water samples according to the standard curve.
3.Determination of absorbance of standard solution.
A.Open the computer and data software, enter the test parameters.
B.Start the test, after the computer display ready will have been pressed shallow to deep concentration.
C.The first with a plug test tube into the catheter of the nebulizer.
D.Wait for the computer reading to stabilize, press the start button to determine.
E.After the computer reading is stable again, remove the test tube and put it into the next test tube.
4.Unknown water samples in the determination of copper ion concentration.
A.The same as the above steps, after the measurement of the last standard test tube into the water sample test tube.
B.To be read and stable to start the measurement, again to be read and stable computer that can be obtained after the graph.
C.Save all the above data and graphs to the designated location for processing and analysis.