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สหรัฐอเมริกา
ASTM
D3082-15
Standard Test Method for Boron in Water
2015
5
ASTM Vol.11.01 (2023)
This test method covers the determination of boron in water and wastewaters by the curcumin colorimetric-extraction method2 in concentrations between 0.1 and 1.0 mg/L. The range can be extended by dilution of the sample. Only dissolved boron is determined. This test method requires that the water sample be filtered through a 0.45-μm membrane filter before analysis...