原子荧光光谱法测定乳酸钠林格注射液中微量砷的含量

目的：建立测定乳酸钠林格注射液中微量砷含量的方法。方法：采用原子荧光光谱法。检测波长为193．7nnl，灯电流为60mA，狭缝宽度为0．4nnl。结果：砷检测质量浓度线性范围为8．0～80．0ng／ml（r=0．9990），平均加样回收率为98．7％（RSD=0．6％，n----3），检测限为2ng／ml。结论：建立的方法准确、灵敏度高、重复性好，适合乳酸钠林格注射液中微量砷的定量分析。

Content Determination of Trace Arsenic in SodiLtm Lactate Ringer Injection by Atomic Fluorescence Spectros- copy

OBJECTIVE： To establish the method for the content determination of trace arsenic in Sodium lactate ringer injec- tion. METHODS： Atomic fluorescence spectroscopy was adopted. The determination wavelength was set at 193.7 nm, and the lamp current was 60 mA. The slit-width was 0.4 nm. RESULTS： The linear range of arsenic was 8.0-80.0 ng/ml （r=0.999 0） with an av- erage recovery of 98.7% （RSD~0.6% ,n=3）; the detection limit was 2 ng/ml. CONCLUSIONS： The method is accurate, sensi- tive and reproducible, and it is suitable for quantitative analysis of trace arsenic in Sodium lactate ringer injection.