Astm D 4004 – 93 (Reapproved 2002) pdf free download

Standard Test Methods for
Rubber—Determination of Metal Content by Flame Atomic
Absorption (AAS) Analysis1

This standard is issued under the fixed designation D 4004; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the Department of Defense.

1. Scope

1.1 These test methods cover the determination of lead,
zinc, copper, and manganese in raw rubber and rubber compounds, vulcanized or unvulcanized. The level at which the
metals are present is taken into account by suitable adjustments
of sample mass and dilution.

1.2 Certain compounding ingredients, present in the rubber
in the sample will dictate which of the methods should be used. Refer
to Section 3. Five methods of determination are as follows:
Method A 8
Method B 9
Method C 10
Method D 14-22
Method E 23-31

1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

2.1 ASTM Standards:
D 1076 Specification for Rubber—Concentrated, Ammonia
Preserved, Creamed, and Centrifuged Natural Latex2
D 1224 Test Methods for Zinc and Cadmium in Paper3
D 3559 Test Method for Lead in Water4
D 4483 Practice for Determining Precision for Test Method
Standards in the Rubber and Carbon Black Industries2
E 663 Practice for Flame Atomic Absorption Analysis5
E 1024 Guide for Chemical Analysis of Metals and Metal
Bearing Ores by Flame Atomic Absorption Spectrophotometry6

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