Detection of Eight Anions in Water by Ion-chromatography
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Abstract:
8 kinds of drinking water were measured with the MIC ion chromatography. The chromatography conditions were used as follows: Supp 5~4.0 mm*150 mm anion column, effluent of 3.2 mol/L sodium carbonate and 1.0 mol/L sodium bicarbonate and suppressed conductivity detection. The contents of F-, HCOO-, Cl-, NO2-, Br-, NO3-, PO43- and SO42- in drinking water were determined by ion chromatography（IC）. This method can determine the contents of eight kind of anions aqueous sample quickly and accurately. The relative standard deviations of the above eight kind of anions were 1.588%~3.270%, and the detection limits were 0.012 mg/L~5.076 mg/L while the percent recovery were 94.0%~105.2%. The results showed that the F- content of one mineral water sample exceeded the limit of the national standards.
