Filter washing, a simple means of reducing blank values and variability in trace metal environmental samples
- 1 January 1977
- journal article
- research article
- Published by Taylor & Francis in Journal of Environmental Science and Health . Part A: Environmental Science and Engineering
- Vol. 12 (9) , 493-506
- https://doi.org/10.1080/10934527709374775
Abstract
Acid‐washing Whatman 41 or 0.45 μm pore size Nuclepore filters resulted in substantial reduction of the trace metal contents and variability in both types of filters for most of the metals examined. No changes in the air flow rate or retention properties of the Whatman 41 filters were observed to occur as a result of this procedure. The advantages of the lower trace metal blank concentrations and uncertainties resulting from this procedure were discussed with reference to the collection of extremely low level trace metal environmental samples.Keywords
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- Evaluation of filter materials and impaction surfaces for nondestructive neutron activation analysis of aerosolsEnvironmental Science & Technology, 1972