DETERMINATION OF IRON AND MANGANESE IN GROUNDWATER BY INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETRY
After digestion with nitric acid and hydrogen peroxide,the iron and manganese contents in the groundwater samples were determinedby using inductively coupled plasma emission spectroscopy(ICP-OES)with spectral lines of Fe259.940nm and Mn257.610nm.The experimental results indicate that when selecting appropriate analytical spectral lines,the determination will not be disturbed by coexisting elements in the sample.The detection limits for iron and manganese are 0.006 μ g·mL-1 and 0.002 μ g·mL-1,respectively.Two national standard samples of water quality were tested for 12 times,and the measured values were basically consistent with the certified values,with a relative standard deviation of 0.45%～2.26%and a recovery rate of 96.8%～104.0%.The method is simple,sensitive,accurate and reliable.
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万方数据
