离子选择电极法测定土壤中氟含量最佳因素的确定

摘要

The soil samples were processed by alkali fusion, and fluoride ion selective electrode was used to determinate fluoride content in soil. Uniavariate ANOVA showed that the best TISAB was TISAB Ⅱ , the optimal dosage of TISAB and HC1 was 15.00, 6.00 mL,respectively, and the optimal condition of heating temperature and clarification time was 600 ℃ and 20 min. The method was proved reliable and effective for the determination of fluorine content in soils by validating quality samples and standard addition test.%用碱熔法处理土壤样品,采用氟离子选择电极法测定土壤中氟的含量,确定了TISABⅡ为最佳离子强度剂,通过单变量方差分析筛选出了土壤中F测定的最佳因素TISAB用量15.00 mL,加热温度600℃,盐酸用量6.00 mL,澄清时间为20 min.通过对质控样进行验证实验和加标回收实验,证明该条件准确可靠,对土壤中氟离子含量的测定十分有效.