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在化学键合固定相ＯＤＳ柱上，用Ｆｅ（Ｐｈｅｎ）_３~（２＋）作流动相添加剂分离并用间接光度法检测无机阴离子。探讨了主要因素（如流动相中Ｆｅ（Ｐｈｅｎ）_３~（２＋）浓度、有机溶剂浓度、ｐＨ值和离子强度等）对阴离子保留和检测灵敏度的影响。Ｃｌ~－，Ｂｒ~－，ＮＯ_３~－和Ｉ~－具有良好的分离度；间接光度检测波长为Ｆｅ（Ｐｈｅｎ）_３~（２＋）的最大吸收波长５１０ｎｍ。测定这４个离子的校正曲线的线性范围为１～１６０ｍｇ／Ｌ（Ｃｌ~－，Ｂｒ~－，ＮＯ_３~－）和２～３２０ｍｇ／Ｌ（Ｉ~－）；相关系数均达０．９９６。检测限（以Ｓ＝２Ｎ计）分别为１．０ｎｇ（Ｃｌ~－），１．７ｎｇ（Ｂｒ~－），１．９ｎｇ（ＮＯ_３~－）和５．６ｎｇ（Ｉ~－）。方法应用于雨水和自来水中Ｃｌ~－的测定，并获得满意的结果。
On the chemically bonded stationary phase ODS column, Fe (Phen) _3 ~ (2+) was used as the mobile phase additive to separate the inorganic anions by indirect spectrophotometry. The main factors (such as the mobile phase of Fe (Phen) 3 ~ (2) concentration, organic solvent concentration, pH value and ionic strength) on anion retention and detection sensitivity were discussed. Cl ~ -, Br ~ -, NO_3 ~ - and I ~ - have good resolution. Indirect photometric detection wavelength is the maximum absorption wavelength of 510nm for Fe (Phen) _3 ~ (2+). The calibration curves of these four ions were linear in the range of 1 ~ 160mg / L (Cl ~ -, Br ~ -, NO_3 ~) and 2 ~ 320mg / L (I ~ The limits of detection (S = 2N) were 1.0ng (Cl ~ -), 1.7ng (Br ~ -), 1.9ng (NO_3 ~) and 5.6ng (I ~ ~), respectively. The method was applied to the determination of Cl ~ - in rainwater and tap water and obtained satisfactory results.