Determination of Sulfur in Soil by Inductively Coupled Plasma Emission Spectrometry After Dissolution in Aqua Regia
A new method for the determination of sulfur in soil samples was developed by inductively coupled plasma emission spectrometry after the samples were dissolved in aqua regia.The results showed that the accuracy of the method was good and the determination results of soil reference materials were within the guaranteed range,and the detection limit of sulfur element was 21.3μg·g-1.The relative standard deviation(RSD)of certified soil samples was 2.40%～6.89%(n = 6),and the accuracy △lgC of certified soil samples was 0～0.016.The methods were compared with each other through 8 laboratories.The method has been verified by many laboratories,and is suitable for the detection of sulfur in different types of soils,the results are accurate and reliable.
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