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[目的]探讨国标生活饮用水中氟化物检测标准加入法计算公式的表述。[方法]以其它国标、行业标准及教科书中关于氟化物检测的标准加入法的表述为对照,结合能斯特方程对公式进行推导。[结果]GB/T 5750-2006中氟化物检测的标准加入法的计算公式ρ(F-)=ρ1.V1V2log-1(E2-E1K)-1应为ρ(F-)=ρ1.V1V210E2-E1K-1。[结论]建议标准检验方法中的公式及计量单位要适时修改,与最新国内外标准以及教科书保持一致。
[Objective] The research aimed to discuss the expression of the formula of adding fluoride in drinking water of national standard. [Method] Compared with the expression of standard addition method for fluoride in other national standard, industry standard and textbook, the formula was deduced according to Nernst equation. [Results] The calculation formula of standard addition method for fluoride detection in GB / T 5750-2006 ρ (F -) = ρ1.V1V2log-1 (E2-E1K) -1 should be ρ (F -) = ρ1.V1V210E2- E1K-1. [Conclusion] It is suggested that the formulas and units of measurement in the standard test methods should be revised in time, keeping the same with the latest domestic and foreign standards and textbooks.