A flame-heated puartz tube was utilized as an atomzer for atomic absorption spectrometric determination of lead with thermospary sampling.Under optimal conditions,a sensitivity enhancement factor of 92 was obtained in...A flame-heated puartz tube was utilized as an atomzer for atomic absorption spectrometric determination of lead with thermospary sampling.Under optimal conditions,a sensitivity enhancement factor of 92 was obtained in comparison with that of conventional flame atomic absorption spectrometry.Detection limits for lead was 3ng/mL compared with 80ng/mL by conventional flame atomic absorption spectrometry.The proposed method was applied for the determination of trace lead in a river water sample with recovery of 96-102%.展开更多
目的:建立采血管中添加剂柠檬酸钠含量的测定方法。方法采用火焰原子吸收光谱法测定采血管中添加剂柠檬酸钠的含量。结果钠元素浓度在(0~1.0)μg· mL -1范围内与对应的吸光度具有良好的线性关系,r=0.9995,平均回收率为99...目的:建立采血管中添加剂柠檬酸钠含量的测定方法。方法采用火焰原子吸收光谱法测定采血管中添加剂柠檬酸钠的含量。结果钠元素浓度在(0~1.0)μg· mL -1范围内与对应的吸光度具有良好的线性关系,r=0.9995,平均回收率为99.2%(n=6),RSD=1.9%。结论本方法操作简便快速,结果准确可靠,重复性好,可用于采血管中添加剂柠檬酸钠的含量测定。展开更多
文摘A flame-heated puartz tube was utilized as an atomzer for atomic absorption spectrometric determination of lead with thermospary sampling.Under optimal conditions,a sensitivity enhancement factor of 92 was obtained in comparison with that of conventional flame atomic absorption spectrometry.Detection limits for lead was 3ng/mL compared with 80ng/mL by conventional flame atomic absorption spectrometry.The proposed method was applied for the determination of trace lead in a river water sample with recovery of 96-102%.
文摘目的:建立采血管中添加剂柠檬酸钠含量的测定方法。方法采用火焰原子吸收光谱法测定采血管中添加剂柠檬酸钠的含量。结果钠元素浓度在(0~1.0)μg· mL -1范围内与对应的吸光度具有良好的线性关系,r=0.9995,平均回收率为99.2%(n=6),RSD=1.9%。结论本方法操作简便快速,结果准确可靠,重复性好,可用于采血管中添加剂柠檬酸钠的含量测定。