Methods approved under Clean Water Act section 304(h) and published at 40 CFR Part 136.
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- 200.2: Sample Preparation Procedure for Spectrochemical Determination of Total Recoverable Elements; Rev. 2.8 (PDF)(13 pp, 146 K, 1989)
- 200.5: Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry; Rev. 4.2 (PDF)(36 pp, 161 K, October 2003, 600/R-06/115)
- 200.7: Determination of Metals and Trace Elements in Water and Wastes by Inductively Coupled Plasma-Atomic Emission Spectrometry; Rev. 4.4 (PDF)(59 pp, 462 K, 1994)
- 200.8: Determination of Trace Elements in Waters and Wastes by Inductively Coupled Plasma – Mass Spectrometry; Rev. 5.4 (PDF)(58 pp, 572 K, 1994)
- 200.9: Determination of Trace Elements by Stabilized Temperature Graphic Furnace Atomic Absorption; Rev. 2.2 (PDF)(43 pp, 294 K, 1994)
- 206.5: Arsenic, Sample Digestion Prior to Total Arsenic Analysis by Silver Diethyldithiocarbamate or Hydride Procedures (PDF)(3 pp, 88 K, 1978)
- 218.6: Determination of Dissolved Hexavalent Chromium in Drinking Water, Groundwater, and Industrial Wastewater Effluents by Ion Chromatography; Rev. 3.3 (PDF)(16 pp, 137 K, May 1994)
- 231.2: Gold, Atomic Absorption, Furnace Technique (PDF)(3 pp, 78 K, 1978)
- 235.2: Iridium, Atomic Absorption, Furnace Technique (PDF)(3 pp, 80 K, 1978)
- 245.1: Determination of Mercury in Water by Cold Vapor Atomic Absorption Spectrometry; Rev. 3.0 (PDF)(19 pp, 193 K, 1994)
- 245.2: Mercury (Automated Cold Vapor Technique) by Atomic Absorption (PDF)(7 pp, 139 K, 1994)
- 245.7: Mercury in Water by Cold Vapor Atomic Fluorescence Spectrometry; Rev. 2.0 (PDF)(33 pp, 231 K, February 2005, 821-R-05-001)
- 252.2: Osmium, Atomic Absorption, Furnace Technique (PDF)(3 pp, 58 K, 1978)
- 253.2: Palladium, Atomic Absorption, Furnace Technique (PDF)(3 pp, 84 K, 1978)
- 255.2: Platinum, Atomic Absorption, Furnace Technique (PDF)(3 pp, 77 K, 1978)
- 265.2: Rhodium, Atomic Absorption, Furnace Technique (PDF)(3 pp, 77 K, 1978)
- 267.2: Ruthenium, Atomic Absorption, Furnace Technique (PDF)(3 pp, 58 K, 1978)
- 279.2: Thallium, Atomic Absorption, Furnace Technique (PDF)(4 pp, 81 K, 1978)
- 283.2: Titanium, Atomic Absorption, Furnace Technique (PDF)(3 pp, 77 K, 1978)
- 289.2: Zinc, Atomic Absorption, Furnace Technique (PDF)(4 pp, 80 K, 1978)
- 1631: Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry; Rev. E (PDF)(45 pp, 2 MB, August 2002, 821-R-02-019)