Micro-open Graphite Digestion-Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Method for Determination of Total Iron Manganese Aluminum Calcium and Magnesium in Soil
This study investigates the utilization of a mixed acid system composed of nitric acid,hydrofluoric acid,and perchloric acid as a soil digestion regimen.By employing a micro-open graphite digestion technique,rapid decomposition of soil samples is achieved,followed by the quantification of total iron,manganese,aluminum,calcium,and magnesium elements in the soil using Inductively Coupled Plasma Optical E-mission Spectrometry(ICP-OES).Experimental outcomes show that this method achieves a method detection limit(MDL)range of 0.3 to 1.5 mg/kg for these five elements,accompanied by a relative standard deviation(RSD)ranging from 0.65%to 1.4%and relative errors(RE)spanning from-1.6%to0.44%.These results demonstrate a low MDL,excellent precision,and high accuracy in the determination of these elements,thereby presenting a reliable and rapid digestion method for the assessment of total iron,manganese,aluminum,calcium,and magnesium in soil samples.
Inductively Coupled Plasma Optical Emission SpectrometerSoilGraphite DigestionMetal Elements
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