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เอกสารมาตรฐาน
สหรัฐอเมริกา
ASTM
D5542-16
Standard Test Methods for Trace Anions in High Purity Water by Ion Chromatography
2016
13
ASTM Vol.11.01 (2023)
These test methods cover the determination of trace (μg/L) levels of fluoride, acetate, formate, chloride, phosphate, and sulfate in high purity water using ion chromatography in combination with sample preconcentration. Other anions, such as bromide, nitrite, nitrate, sulfite, and iodide can be determined by this method. However, since they are rarely present in significant concentrations in high purity water, they are not included in this test method...