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ASTM D3859-2008 水中硒含量的标准试验方法

ASTM D3859-2008 水中硒含量的标准试验方法

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【英文标准名称】: Standard Test Methods for Selenium in Water
【原文标准名称】: 水中硒含量的标准试验方法
【标准号】: ASTM D3859-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: D19.05
【标准类型】: (Test Method)
【标准水平】: ()
【中文主题词】:
【英文主题词】: atomic absorption; furnace (Method B); hydride technique (Method A); selenium; total recoverable selenium; water; Atomic absorption spectrophotometry/spectroscopy; Dissolved elements (of water); Furnaces; Gaseous hydride AAS; Graphite furnace atomic
【摘要】: In most natural waters selenium concentrations seldom exceed 10 x03BC;g/L. However, the runoff from certain types of seleniferous soils at various times of the year can produce concentrations as high as several hundred micrograms per litre. Additionally, industrial contamination can be a significant source of selenium in rivers and streams. High concentrations of selenium in drinking water have been suspected of being toxic to animal life. Selenium is a priority pollutant and all public water agencies are required to monitor its concentration. These test methods determine the dominant species of selenium reportedly found in most natural and wastewaters, including selenities, selenates, and organo-selenium compounds.1.1 These test methods cover the determination of dissolved and total recoverable selenium in most waters and wastewaters. Both test methods utilize atomic absorption procedures, as follows:
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