Study on the determination of total Chromium in soil bymicrowave acid digestion method-flame atomic absorption spectrometry
In this experiment, total Chromium in soil is determined by microwave acid digestion method, then join 5 mL 10％NH4CL and constant volume to 50 mL. The digestion is tested by flame atomic absorption spectrometry. The results showed that compared with the electric hot plate digestion, the relative error of microwave acid digestion was about 1. 0％ and the relative standard deviation was 2. 0％ ～ 4. 0％. The relative error of the electric hot plate digestion was 2. 0％ ～ 4. 0％ and the relative standard deviation was 4. 0％ ～ 7. 0％. Microwave digestion method is simple and quick and has high accuracy and precision, it is worth promoting and application.
NETL
NSTL
万方数据
维普
