Question

QUESTION 7 For a laboratory with only an available graphite furnace atomic adsorption (GFAA) spectrometer, the recommended SW-846 method for the analysis of metals (excluding Hg, As, Cr, Se) in solid wastes is: O 6010C 0 7471B O 6020A O 7010 QUESTION 8 Which of the following is NOT a method for the analysis of dioxin (2,3,7,8-TCDD) (Hint: consider using NEMI dada base search if needed)? O OAQPS-23 0 1613 O 613 O 151.1

Answer 1

1. Method 7010 is used to determine the presence of metal in a solution by graphite furnace atomic absorption spectrophotometry. This method is simple and quick.

In this method a sample of solid waste is atomizd in a flame and a light beam from a hollow cathode lamp or an electrodeless discharge is directed through a flame into a monochromator and in detector it measure the amount of absorbed light with the help of absorption we can detect the presence of metal.     

2. 151.1 is not a method for the analysis of dioxin while the above three are.

OAQPS-23 , 1613,613 are methods used to protect our environment