摘要
目的建立测定茶氟和尿氟含量的离子色谱检测方法。方法选用Metrosep A Supp4-250型分离柱,在线英蓝学析进样,以15mmol/LNa2B4O7和2mmol/LNaHCO3为混合淋洗液,以抑制型电导检测器进行检测。结果该方法的线性范围为0.1～50mg/L,相关系数为0.9997,检出限为0.0145mg/L,RSD%为0.95%～1.92%,样品回收率为98.4%～101.1%。结论该方法样品预处理效果好,氟离子峰分离好,有较高的准确度和回收率,精密度好,适用于茶氟和尿氟含量分析。
Objective To develop an ion chromatogram method for the determination of fluoride in tea and urine. Methods The Metrosep A Supp4-250 chromatographic column was selected as the separation column, on-line dialysis injection was performed, 15 mmol/L Na2B407 and 2 mmol/L NaHCO3 mixed solution was used as the eluent, the fluoride was quantified by the suppressed conductivity detector.Results The linearity range was 0.1-50 mg/L, the relative coefficient was 0.999 7, the limit of detection was 0.014 5 mg/L, the relative standard deviations were 0.95 %-1.92 %, the rates of recovery were 98.4%-101.1%. Conclusion This method presents a good effect of pretreatment and fluorine ion separation and with a satisfactory rate of recovery, accuracy and precision. This method can be applied to the determination of fluoride in tea and urine.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2010年第6期520-521,共2页
Journal of Environment and Health
基金
重庆市自然科学基金资助项目(CSTC2007BB5370)
关键词
色谱法
离子交换
氟
茶
尿液
Chromatography, ion exchange
Fluoride
Tea
Urine
