氢化物发生-原子荧光法测定土壤中碲的含量

Determination of tellurium in soils by hydride generation-atomic fluorescence spectrometry

中文关键词:  土壤  碲  消解  原子荧光光谱法

英文关键词:soil  tellurium  digestion  atomic fluorescence spectrometry

中文摘要:

      目的 建立一种用氢化物发生-原子荧光法测定土壤中痕量碲的检测方法。方法 样品经8 mL硝酸＋3 mL高氯酸＋6 mL氢氟酸低温消解后, 加入抗干扰剂, 直接用原子荧光法进行土壤中碲含量测定。结果 在最佳条件下, 碲的标准曲线线性良好, 相关系数0.9998, 该方法检出限1.8 μg/kg, 精密度为3.4%。选取湖北省内的5个实际土壤分析检测, 碲的含量为0.02~0.08 mg/kg之间, 回收率为92.5%~105%。结论 该方法成本低、易操作, 可适用于实际土壤样品中的痕量碲测定

英文摘要:

      Objective To establish a simple method for the determination of trace tellurium in soil by hydride generation-atomic fluorescence. Methods After the sample was digested at low temperature by 8 mL nitric acid+3 mL perchloric acid+6 mL hydrofluoric acid, anti-interference agent was added and the tellurium content in the soil was directly determined by atomic fluorescence method. Results Under the best conditions, the standard curve of tellurium was linear and the correlation coefficient was 0.9998. A total of 5 actual soils in Hubei province were selected for analysis and detection. The tellurium contents were 0.02?0.08 mg/kg, and the recovery rates were 92.5%?105%. Conclusions This method is low cost and easy to operate, and can be applied to the determination of trace tellurium in real soil samples.