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- W2380778856 abstract "The nitrogen contained in soil was oxidated for nitrate ion by alkaline potassium persulfate with 100 ℃ water bath heating.Nitrate ion was determined by using ion chromatography for indirect measurement of total nitrogen in soil.Experimenting with different chemical structure of organic nitrogen reagent thiourea and ammonium acetate,the dosage as well as the time of digestion of K2S2O8 and NaOH were discussed.The results showed that conversion rate reached 97%~100% under the afore mentioned,based on which,the method to quantify the concentration of NO-3 for indirect measurement of total nitrogen in soil was built.When the concentration of NO-3 was in the range from 0.1mg/L to 100mg/L,the regression coefficient was 0.9997.The nitrogen ranged from 83.5% to 108.7%,with the amount of GBW07401 soil sample between 30 and 50 mg.The relative standard deviation of nitrogen is 4.2% with good fidelity.The detection limit is 0.03 μg/mL." @default.
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- W2380778856 date "2011-01-01" @default.
- W2380778856 modified "2023-09-24" @default.
- W2380778856 title "Determination of Total Nitrogen in Soil Samples Using Ion Chromatography" @default.
- W2380778856 hasPublicationYear "2011" @default.
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