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Standard Test Method for Available Sulfide in Water by Gas Extraction
ASTM D8536-25
Organization:
ASTM - ASTM International
Year: 2025
Abstract: 5.1 Sulfide ion is found in groundwaters and wastewater causing odor and corrosion problems. The different forms of sulfides (soluble, insoluble, and gaseous sulfides in water) depend on the pH of the water constitution. The variation in the composition can increase or decrease the corrosion-, toxicity- and odor-potential of the water. If acidified, these waters can release hydrogen sulfide, which is extremely toxic even at low levels. 5.2 This test method provides a means for interference-free measurement of free sulfide ion. The result is a bulk parameter of all soluble and gaseous sulfides in the water sample. The method can determine the gaseous and soluble sulfides completely and undissolved sulfides depending on their solubility at pH 1.0. Note 1: Sulfide forms complexes with hydrogen ions (HS− and H2S). In addition, sulfide ion forms soluble complexes with elemental sulfur (S22−, S32−, S42−, and so forth), tin, antimony, and arsenic ions.
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Standard Test Method for Available Sulfide in Water by Gas Extraction
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| contributor author | ASTM - ASTM International | |
| date accessioned | 2025-09-30T19:28:36Z | |
| date available | 2025-09-30T19:28:36Z | |
| date copyright | 2025 | |
| date issued | 2025 | |
| identifier other | d8536-25.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=autho/handle/yse/343775 | |
| description abstract | 5.1 Sulfide ion is found in groundwaters and wastewater causing odor and corrosion problems. The different forms of sulfides (soluble, insoluble, and gaseous sulfides in water) depend on the pH of the water constitution. The variation in the composition can increase or decrease the corrosion-, toxicity- and odor-potential of the water. If acidified, these waters can release hydrogen sulfide, which is extremely toxic even at low levels. 5.2 This test method provides a means for interference-free measurement of free sulfide ion. The result is a bulk parameter of all soluble and gaseous sulfides in the water sample. The method can determine the gaseous and soluble sulfides completely and undissolved sulfides depending on their solubility at pH 1.0. Note 1: Sulfide forms complexes with hydrogen ions (HS− and H2S). In addition, sulfide ion forms soluble complexes with elemental sulfur (S22−, S32−, S42−, and so forth), tin, antimony, and arsenic ions. | |
| language | English | |
| title | Standard Test Method for Available Sulfide in Water by Gas Extraction | en |
| title | ASTM D8536-25 | num |
| type | standard | |
| status | Active | |
| tree | ASTM - ASTM International:;2025 | |
| contenttype | fulltext | |
| scope | 1.1 This test method covers a method for the determination of available sulfide in water and wastewater in mass concentrations ranging from 0.04 mg/L to 4000 mg/L. Reduction of the volume of the water sample applied allows the determination of higher mass concentrations. 1.2 Soluble sulfides will be completely determined and undissolved sulfides will be either completely or partially determined depending on their solubility at pH 1.0 and aging properties. Examples are sulfides of zinc, iron, and manganese. The sulfide portion of polysulfides is incompletely determined by this test method. 1.3 Some sulfides cannot be determined, such as mercury sulfide. Particle-bound sulfides are determined too. If particle-bound sulfides are not to be included, the sample shall be filtered under conditions of excess of oxygen. If easily released sulfide (alkali earth and alkali) is to be determined only, the acidification to do so is by buffer pH 4.0. 1.4 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. | |
| identifier DOI | 10.1520/D8536-25 |