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目的：研究、探讨Ｎ萘基乙二胺法作为检查蒸馏水中亚硝酸根离子（ＮＯ２－）的方法的可行性。方法：用盐酸萘乙二胺作试剂，检查蒸馏水中ＮＯ２－。结果：试验证明，本法灵敏，专属性强，结果满意。灵敏度为０．００７ｐｐｍ。结论：本法可用于检查蒸馏水中ＮＯ２－。
Objective: To study and discuss the feasibility of using N-naphthalene-ethylenediamine as a method to check nitrite ion (NO2-) in distilled water. Methods: Naphthalene ethylenediamine hydrochloride was used as a reagent to check NO2- in distilled water. Results: The test proves that the method is sensitive, specific and satisfactory. Sensitivity is 0.007ppm. Conclusion: This method can be used to check NO2- in distilled water.