ASTM D7035-10 Analysis of airborne particulate matter for metals and metalloids by ICP-AES

Scope:

ASTM D7035-10 method is used where area sampling is required and the presence of airborne particles in inhalable or respirable fractions needs monitoring and control. It uses ICP-AES for analysis, which requires expertise in the interpretation of spectral and matrix interferences and knowledge of procedures for their correction. The method covers alternative methods for the preparation of test solutions from airborne particulate matter samples. This test method is not applicable to the sampling of elemental mercury, or to inorganic compounds of metals and metalloids that are present in the gaseous or vapor state.

Test procedure:

Predetermined volume of air is drawn in using a sampler. The sampler contains a substrate such as a filter, foam, or a filter capsule in order to trap the airborne particles alleged to carry metals or metalloids, or both. The filter along with the collected sample needs to be dissolved. Dissolution can be done in one or two ways, one for soluble or one for total metals or metalloids, or both. The particulate metals and metalloids (and their compounds) of interest are converted to water- or acid- soluble ions in the sample solution. Test solutions are then analyzed using inductively coupled plasma-atomic emission spectrometry (ICP-AES) to evaluate the concentration of suspected elements in the sampled air.

Specimen size:

Mean flow rate during the sampling period in L/min-
1 L/min to 5 L/min.
Volume of air is sampled in liters (calculated by multiplying the mean flow rate by the duration of the sampling period).

Data: