AS 3580.2.1-1990

1 - AS 3580.2.1-1990 METHODS FOR SAMPLING AND ANALYSIS OF AMBIENT AIR - PREPARATION OF REFERENCE TEST ATMOSPHERES-PERMEATION...
1 - PREFACE
1 - METHOD
1 - 1 SCOPE.
1 - 2 PRINCIPLE.
1 - 3 APPARATUS.
1 - 3.1 Permeation tubes
1 - 3.2 Analytical balance
2 - 3.3 Permeation apparatus
2 - 3.4 Diluent gas
2 - 4 PROCEDURE.
2 - 4.1 Calculation of di luent gas flow rate.
2 - 4.2 Preparation of reference test atmosphere.
3 - 4.3 Preparation of calibration graph.
3 - 4.4 Check on diffusion rate.
4 - REFERENCES

Sets out a method for the preparation of reference test atmospheres for the determination of gaseous pollutants in ambient air, using permeation tubes. The procedure applies to the preparation of reference test atmospheres containing pollutant levels from 0.01 ppm to 5 ppm by volume (25 µg/m(sup)3(/sup) to 14 000 µg/m(sup)3(/sup)). A list of references is provided for information on various aspects of the permeation tube procedure for preparing reference test atmospheres.

This Standard sets out a method for the preparation of reference test atmospheres for the determination of gaseous pollutants in ambient air, using permeation tubes. The procedure applies to the preparation of reference test atmospheres containing pollutant levels from 0.01 p.p.m. to 5.0 p.p.m. by volume (25 mg/m3 to 14 000 mg/m3). A list of references is provided for information on various aspects of the permeation tube procedure for preparing reference test atmospheres.