【摘要】 对氧化铝矿浮选药剂钢铁灵、苯甲羟肟酸的高效液相色谱分离和测定进行了研究，并建立了最佳色谱体系：固定相ＮＵＣＬＥＯＳＩＬＯＤＳ（５μｐ），２００ｍｍ×４ｍｍ；流动相为合１．８×１０－４ｍｏｌ／Ｌ的ＫＨ２ＰＯ４，甲醇与水的体积比为７０／３０，ｐＨ为２．５０；开发了检测器的波长切换技术，分别在２３０ｎｍ和２８５ｎｍ波长下测定苯甲羟肟酸和铜铁灵的吸光值，两者的检出限分别为０．００６ｍｇ／Ｌ和０．００５ｍｇ／Ｌ；线性范围分别为０．２～２００ｍｇ／Ｌ和０．６～３００ｍｇ／Ｌ·同时，借助该方法对铜铁灵、苯甲羟肟酸浮选ＰｂＳＯ４的协同作用机理进行了研究．更多还原

【Abstract】 A reversed phase HPLC study was described in this paper for analysis of two collectors,cupferron and benzoyl hydroxamic acid (BHA). The tailing of BHA can be depressed by addition of phosphate in mobile phase effectively. The optimized chromatographic conditions were: NUCLEOSIL ODS (5μm), 200 mm × 4 mm column; mobile phase: CH3OH/H2O(70/30) solution containing 1. 8 × 10-4 mol/L KH2PO4, PH 2.50. A function of wavelength transform of detector was exploited. The absorption values of cupferron and BHA were obtained at λ= 230 urn and λ= 285 nm respectively. Detection limits were 0. 006 mg/L and 0. 005 mg/L. There were linear relations between the concentration of cupferron and BHAand their area of chrometographic peaks from 0. 2 to 200 mg/L and from 0. 6 to 300 mg/L respectively. Mechanism of synergism between cupferron and BHA in the flotation of lead-sulfate (PbSO4) was investigated by means of the above analytical method.更多还原