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气敏氨电极问世后,对溶液中铵的测定提供了新的途径.由于气敏氨电极的选择性是气体选择性挥发与离子电极本身选择性的加合,因而它具有高度的选择性,排除了待测液中的离子干扰,充分体现了气敏氨电极具有快速、简单、准确和节省费用等优点.气敏氨电极不仅成功地应用于水质分析,而且也能应用于土壤中各种形态氮的测定,如代换性铵、代换量及全氮等,尤其对土壤全氮测定的成功应用,使原来全氮测定的消化、蒸馏、测定三个阶段缩减为消化及电极测定两个阶段,大大加快了分析速度,保证了精密度并降低了费用.
After the advent of gas-sensing ammonia electrode, the determination of ammonium in solution provides a new way.Because the selectivity of gas-sensitive ammonia electrode is selective addition of gas selective volatilization and ion electrode itself, it has a high degree of selectivity, Ruled out the interference of ions in the test solution, fully reflects the gas-sensitive ammonia electrode has the advantages of fast, simple, accurate and cost-saving etc .. Gas-sensing ammonia electrode not only successfully applied to water quality analysis, but also can be applied to various kinds of soil Determination of form nitrogen, such as substitutional ammonium, substitution and total nitrogen, etc., especially for the successful application of soil total nitrogen determination, so that the original total nitrogen determination digestion, distillation, determination of three stages reduced to digestion and electrode determination of two A stage, greatly speed up the analysis, to ensure the accuracy and reduce costs.