离子色谱法测定净水产品中F-、Cl-、NO-2、No-3、HPO2-4和SO2-4

Chemical Analysis and Meterage(2011)

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Abstract
建立了离子色谱法测定净水产品中的F<'->、Cl<'->、NO<'-><,2>、No<'-><,3>、HPO<'2-><,4>和SO<'2-><,4>6种阴离子.根据净水产品的类型分别选择配制水浸提和直接净化配制水两种方法处理样品,选用IonPac As9-HC色谱柱(250 mm×4 mm),8.0 mm0L/L Na<,2>CO<,3>为淋洗液,抑制电导检测.方法的检出限为0.007~0.13 mg/L,定量下限为0.02-0.41 mg/L,相对标准偏差为0.9%~1.4%(n=6).净水杯、净水器、超滤净水器和反渗透净水器等净化处理水的加标回收率为84.2%~103.8%.该方法操作简便、准确可靠、灵敏度高,适用于净水产品中痕量阴离子的检测.
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Key words
ion chromatography,water purification product,anion
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