Determination of twenty-two trace elements in seawater by solid phase extraction-inductively coupled plasma mass spectrometry
With iminodiacetic acid type chelating resin as filler,a method for the determination of twenty-two trace metal elements in seawater by inductively coupled plasma mass spectrometry(ICP-MS)after solid phase extraction separation and preconcentration was established.Adjusting the pH value of seawater to 8.5-9.0,15%nitric acid was used as the elution solution to extract.Twenty-two trace elements in seawater were extracted and enriched.The elution solution was quantitatively analyzed using ICP-MS.The result of experiment show that:Under optimized experimental conditions,the relative standard deviation(RSD)of the method was 2.5%-4.8%,and the detection limit was 0.008-0.052 μg/L,lower limit of measurement was 0.032-0.208 μg/L,Adding standard solution of different concentrations,the recovery rates were 80.0%-108.0%.The established method was easy to operate,sensitive and efficient,achieving green separation and rapid detection of twenty-two elements in seawater.It provided technical support for marine chemistry and marine environmental research.
NETL
NSTL
万方数据
