当前位置: 首页 > 文章 > 氧弹燃烧-氟离子选择电极法测定蔬菜中的氟 河北农业大学学报 2009,32 (5) 102-104+108
Position: Home > Articles > Determination of fluoride in vegetables by using oxygen bombfluoride ion-selective electrode method Journal of Agricultural University of Hebei 2009,32 (5) 102-104+108

氧弹燃烧-氟离子选择电极法测定蔬菜中的氟

作  者:
果秀敏;杨秀敏;解晓东;方正
单  位:
河北农业大学;故城县郑口中学
关键词:
氧弹;高氯酸;氟离子选择电极
摘  要:
本试验建立了一种测定蔬菜中氟含量的新方法。蔬菜经氧弹燃烧处理后在一定浓度的高氯酸和柠檬酸钠的介质中利用氟离子选择性电极法测定其微量氟。菠菜、卷心菜、油菜、生菜、香麦、白菜中氟的测定结果表明,氟离子浓度为1.0×10-2~1.0×10-6mol/L范围内呈现良好线性关系,线性相关系数r为0.999 3,相对标准偏差(RSD)为0.93%~1.91%(n=6),不同添加水平中回收率均在96.4%~105.7%之间。
译  名:
Determination of fluoride in vegetables by using oxygen bombfluoride ion-selective electrode method
作  者:
GUO Xiu-min1,YANG Xiu-min1,XIE Xiao-dong2,FANG Zheng1(1.Key laboratory Bio-inorganic Chemistry of Hebei,Agricultural University of Hebei,Baoding 071001,China;2.Zhengkou Middle School of Gucheng,Hengshui 053800,China)
关键词:
oxygen bomb;HClO4;fluoride ion-selective electrode
摘  要:
A new method for determination of trace fluoride in such vegetables as spinach,cabbage,rape,lettuce,xiangmai,Chinese cabbage was developed.The vegetables were burned in the oxygen bomb with high pressure and pure oxygen and then determined in HClO4 and NaC6H5O7·2H2O media.The method was linear in the range of 1.0×10-2~1.0×10-6 mol/L(r=0.999 3).Excellent recovery and reproducibility values were achieved.The proposed method proved simple,sensitive and suitable for the determination of fluoride in vegetables.

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