| 摘要: |
| 研究电超滤-连续流动分析(EUF-CFA)联用技术测定土壤有效氮和磷的方法。在探讨紫外-过硫酸盐氧化土壤电超滤有机氮和 NH4-N 成为 NO3-以及氧化有机磷成为正磷酸根的机理和条件之后,研究并优化了 Technicon 自动分析仪测定 EUF-NT,-NNO3,-Norg和-PT,-Pmin,-Porg的主要条件,提出了快速简便的方法,灵敏度和精密度都很高。 |
| 关键词: 电超滤氮和磷 土壤有效氮和磷 连续流动分析 自动分析仪 紫外-过硫酸盐氧化 |
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| Abstract: |
| The electro-ultrafiltration-continuous flow analysis (EUF-CFA) combined technique used for determining soil available N and P is investigated. In this procedure the soil EUF-N and -P,including both soluble inorganic and organic compounds,are oxidized to nitrate and orthophosphate respectively,by means of ultraviolet irradiation-peroxydisulfate (UV-S2O32-) oxidation. Experimental evidence shows that the presence of sufficient soluble oxygen which can be provided by adding potassium peroxydisulfate to th... |
| Key words: EUF-N and -P soil available N and P continuous flow analysis(CFA) Technicon AutoAnalyzer ultraviolet-peroxydisulfate oxidation |
