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Method 9056A Determination of Inorganic Anions by Ion Chromatography

By Environmental Protection Agency

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Book Id: WPLBN0000000300
Format Type: PDF eBook
File Size: 0.1 MB
Reproduction Date: 2007
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Title: Method 9056A Determination of Inorganic Anions by Ion Chromatography  
Author: Environmental Protection Agency
Language: English
Subject: Ecology, Natural resource issues, Environemtal protection
Collections: Environmental Awareness Library Collection
Publication Date:
Publisher: United States Environmental Protection Agency


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Agency, E. P. (n.d.). Method 9056A Determination of Inorganic Anions by Ion Chromatography. Retrieved from

Excerpt: 1.0 SCOPE AND APPLICATION 1.1 This method addresses the sequential determination of chloride (ClG), fluoride (FG), bromide (BrG), nitrate (NO3G), nitrite (NO2G), phosphate (PO4 3G), and sulfate (SO4 2G) anions in aqueous samples, such as drinking water, wastewater, aqueous extracts of solids, and the collection solutions from the bomb combustion of solid waste samples. 1.2 The method detection limit (MDL), the minimum concentration of a substance that can be measured and reported with 99% confidence that the value is above zero, varies for anions as a function of sample size. Generally, minimum detectable concentrations are in the range of 0.002- 0.02 mg/L for FG, BrG, ClG, NO3G-N, NO2G-N, PO4 3G-P, and SO4 2G with a 50-?L sample loop. Example MDLs for specific anions are given in Table 1 and are provided for illustrative purposes only. The upper limit of the method is dependent on total anion concentration and may be determined experimentally. Maximum column loading (total anions) should not exceed approximately 500 ppm. Dilution of samples may allow higher concentration samples to be analyzed.


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