铅形态的高效液相色谱-电感耦合等离子体质谱分析  

Lead Speciation Analysis by High Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry

作　　者：潘元海[1] 刘湘生[1] 何小青[1] 王长华[1] 

机构地区：[1]北京有色金属研究总院,北京100088

出　　处：《分析化学》2005年第11期1560-1564,共5页Chinese Journal of Analytical Chemistry

摘　　要：用50 mm的反相高效液相色谱短柱在V甲醇/VH2O＝55/45,其中水相为0.1 mol/L乙酸0.1 mol/L乙酸铵的缓冲溶液(pH=4.70),流速0.6 mL/min条件下,约10 min内实现了无机铅离子(Pb2+)、氯化三甲基铅(TML)、氯化三乙基铅(TEL)和氯化三苯基铅(TPhL)的高效液相色谱-电感耦合等离子体质谱(HPLC-ICP-MS)联用分析.4种铅形态在去离子水和自来水中的加标回收率分别为93.8%～115.6%和89.3%～137.8%;峰强度和保留时间的RSD分别为7.4%～14.3%和0.5%～1.3%;仪器检出限及方法检出限分别为0.27～3.07 μg/L和1.20～2.33 μg/L.Speciation of inorganic lead（pb^2＋）, trimethyllead chloride（TML）, triethyllead chloride （TEL）, triphenyllead chloride （TPhL） was investigated using high performance liquid chromatography （HPLC） with the detection of inductively coupled plasma mass spectrometry （ICP-MS） on a short reversed-phase liquid chromatographic column of 50 mm long in more than 10 minutes. Optimal chromatographic conditions were 0. 1 mol/L acetic acid- 0. 1 mol/L ammonium acetate buffer at pH 4.70 and 55% methanol as the mobile phase with flow rate of 0.6 mL/min. Recovery of four lead species in de-ionized water and tap water are in the range of 93.8% - 115.6% and 89.3% - 137.8% , respectively. RSD of peak intensity and retention time is in the range of 7.4% - 14.3% and 0.5% - 1.3% and detection limits of equipment and method are in the range of 0.27 - 3.07 μg/L and 1.20 - 2.33 μg/L, respectively.

关 键 词：铅形态 高效液相色谱-电感耦合等离子体质谱 电感耦合等离子体质谱 反相高效液相色谱 等离子体质谱分析 铅离子 形态 加标回收率 方法检出限 仪器检出限 

分 类 号：O657.63[理学—分析化学] TQ460.6[理学—化学]