ASTM D7439-14

1.1 This standard test method specifies a procedure for sample preparation and analysis of airborne particulate matter for the content of metals and metalloids in workplace air samples using inductively coupled plasma-mass spectrometry (ICP-MS). This test method can be used for other air samples provided the user ensures the validity of the test method (by ensuring that appropriate data quality objectives can be achieved).

1.2 This standard test method assumes that samples will have been collected in accordance with Test Method D7035.

1.3 This standard test method should be used by analysts experienced in the use of ICP-MS, the interpretation of spectral and matrix interferences and procedures for their correction.

1.4 This standard test method specifies a number of alternative methods for preparing test solutions from samples of airborne particulate matter. One of the specified sample preparation methods is applicable to the measurement of soluble metal or metalloid compounds. Other specified methods are applicable to the measurement of total metals and metalloids.

1.5 It is the user's responsibility to ensure the validity of the standard method for filters of untested matrices.

1.6 Table 1 provides a non-exclusive list of metals and metalloids for which one or more of the sample dissolution methods specified in this document is applicable.

TABLE 1 Applicable Metals and Metalloids

Element	Symbol	CASRNA	Element	Symbol	CASRNA	Element	Symbol	CASRNA
Aluminum	Al	7429-90-5	Antimony	Sb	7440-36-0	Arsenic	As	7440-38-2
Barium	Ba	7440-39-3	Beryllium	Be	7440-41-7	Bismuth	Bi	7440-69-9
Boron	B	7440-42-8	Cadmium	Cd	7440-43-9	Calcium	Ca	7440-70-2
Cesium	Cs	7440-46-2	Chromium	Cr	7440-47-3	Cobalt	Co	7440-48-4
Copper	Cu	7440-50-8	Gallium	Ga	7440-55-3	GermaniumB	Ge	7440-56-4
Hafnium	Hf	7440-58-6	Indium	In	7440-74-6	Iron	Fe	7439-89-6
Lead	Pb	7439-92-1	Lithium	Li	7439-93-2	Magnesium	Mg	7439-95-4
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