By Wilfred Gallay
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Extra resources for Environmental Pollutants–Selected Analytical Methods. Scope 6
0001 micrograms of manganese per cubic metre can be detected. 3. PRINCIPLE A prepared test sample, containing the inorganic constituents in aqueous acidic solution, is atomized in a flame or graphite tube. The-amount of the element of interest is measured by making use of its property of absorbing light of its characteristic wavelength in the atomic state. 55 4. REACTIONS The most important reactions relate to the complete dissolution of the particulate sample in acidic media to form a homogeneous test sample.
TEST GAS SUPPLY SYSTEM FOR LEAKS BEFORE USE AND EACH TIME A CYLINDER OF FUEL IS REPLACED. 1 Test portions, flame Introduce the test portion into the flame by continuous aspiration, through polyethylene tubing, of an unmeasured portion of the test sample. Aspirate distilled water into flame, between the introduction of each test portion, to prevent cross contamination. 11). 1 Calibration curves, flame . 0 micrograms of copper per ml. Install in the spectrophotometer and align, if necessary, the hollow cathode source for copper.
And Monkman, J. L. The Metal Content of Urban Mx. C. A. 16, 2 , 7 7 , 1 9 6 6 . , Dubois, L. and Monkman, J . L . The Accurate Measurement of Lead in Airbome P a r t i c u l a t e s . J . Envir. Anal. Chem. 2, 6 3 , 1 9 7 2 . , and Dubois, L. The Accurate Measurement of Cadmium in Airborne Particulates. / . Int. Envir. Anal. Chem. September 1972. 6 Pierce, J. 0 . and Meyer, J. H. Sampling and Analysis Considerations in evaluating levels of atmospheric lead. Atmos. Environment 5, 8 1 1 , 1971.
Environmental Pollutants–Selected Analytical Methods. Scope 6 by Wilfred Gallay