标准编号：ISO/TS 17951-2:2016
中文名称：水质 气流分析（FIA和CFA）测定氟化物 第2部分：使用自动蒸馏连续流动的分析方法（CFA）
英文名称：Water quality — Determination of fluoride using flow analysis (FIA and CFA) — Part 2: Method using continuous flow analysis (CFA) with automated in-line distillation
发布日期：2016-07
标准范围
This part of ISO 17951 specifies a method for the determination of fluoride in waters, waste waters and effluents by continuous flow analysis (CFA). Any insoluble or complexed fluoride is converted to fluoride ion by an automated continuous flow distillation procedure from sulfuric/phosphoric acid. Fluoride ion in the distillate is measured using flow analysis with lanthanum alizarin complexone and spectrometric detection. This method is applicable to industrial waste waters, effluents, surface waters, ground waters, leachates. When this method is applied to the analysis of drinking water, a heater and a distillation unit is unnecessary. Some drinking water contains high concentration of aluminium and iron. In the case of drinking water, this part of ISO 17951 is appropriate to drinking water with low interferences. It is not applicable to samples which contain large amount of suspended matter.In this part of ISO 17951, two working ranges are described:— working range I: 0,1 mg/l to 1,0 mg/l;— working range II: 1,0 mg/l to 10 mg/l.The specification of the calibration solutions are to be adapted accordingly.
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