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>Determination of fluoride in water by reversed-phase high-performance liquid chromatography using F--La3+- alizarin complexone ternary complex
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Determination of fluoride in water by reversed-phase high-performance liquid chromatography using F--La3+- alizarin complexone ternary complex
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机译:F - La3 + - 茜素络合酮三元配合物反相高效液相色谱法测定水中的氟
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摘要
A method for the determination of fluoride by reversed-pkase, high-performance liquid chromatography (RP-HPLC) is described. Fluoride, La 3, and alizarin complexone form F-La3+- alizarin complexone ternary complex, which is separated from the matrix on a RP, Ultrasphere C-18 column (250 x 4.6 mm, 5 mum) using methanol-water (19:81, v/v) mobile phase at 1.00 mL min(-1) - detection at 568 nm. The calibration graph was linear from 1.0-150 ng mL(-1) for fluoride with a correlation coefficient: 0.9993 (n = 6). The detection limit was 0.2 ng mL-1. The method was successfully applied to the determination of fluoride in river and tap water. Recovery was: 94-102%, RSD in the range: 1.9-3.6%.
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机译:描述了一种通过反向磷酸酶高效液相色谱法(RP-HPLC)测定氟化物的方法。氟化物,La 3和茜素配合物形成F-La3 +-茜素配合物三元配合物,使用甲醇-水(19:81)在RP Ultrasphere C-18色谱柱(250 x 4.6 mm,5毫米)上将其与基质分离。 ,v / v)1.00 mL min(-1)的流动相-在568 nm处检测。氟化物的校准曲线在1.0-150 ng mL(-1)之间呈线性关系,相关系数为0.9993(n = 6)。检出限为0.2 ng mL-1。该方法已成功应用于河流和自来水中的氟离子的测定。回收率为94-102%,相对标准偏差为1.9-3.6%。
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