1. Scope

1.1 This practice covers the general considerations for quantitative sample digestion for total metals in water using closed vessel microwave heating technique. This practice is applicable to surface, saline, domestic, and industrial wastewater.

1.2 Because of the differences among various makes and models of satisfactory instruments, no detailed operating instructions can be provided. Instead, the analyst should follow the instructions provided by the manufacturer of the particular instrument.

1.3 This practice can be used with the following ASTM standards, providing the user determines precision and bias based on this digestion practice: Test Methods D 857, Test Methods D 858, Test Methods D 1068, Specification D 1192, Test Methods D 1687, Test Methods D 1688, Test Methods D 1691, Test Methods D 1886, Practices D 3370, Test Methods D 3557, Test Methods D 3559, Practice D 3919, Test Methods D 4190, Practice D 4453, and Practice D 4691.

1.4 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. For specific hazard statements, see Section 9.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D857 Test Method for Aluminum in Water

D858 Test Methods for Manganese in Water

D1068 Test Methods for Iron in Water

D1129 Terminology Relating to Water

D1192 Guide for Equipment for Sampling Water and Steam in Closed Conduits

D1193 Specification for Reagent Water

D1687 Test Methods for Chromium in Water

D1688 Test Methods for Copper in Water

D1691 Test Methods for Zinc in Water

D1886 Test Methods for Nickel in Water

D3370 Practices for Sampling Water from Closed Conduits

D3557 Test Methods for Cadmium in Water

D3559 Test Methods for Lead in Water

D3856 Guide for Management Systems in Laboratories Engaged in Analysis of Water

D3919 Practice for Measuring Trace Elements in Water by Graphite Furnace Atomic Absorption Spectrophotometry

D4190 Test Method for Elements in Water by Direct-Current Plasma Atomic Emission Spectroscopy

D4453 Practice for Handling of High Purity Water Samples

D4691 Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry

U.S. Code of Federal Regulations

Federal Communications Commission Standard

U.S. EPA Method

Keywords

digestion; metals; microwave; vessel ;

ICS Code

ICS Number Code 13.060.50 (Examination of water for chemical substances)

DOI: 10.1520/D4309-96

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