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研究了在pH=9.40的碱性缓冲水溶液中,K2FeO4初始浓度、温度以及不同介质对FeO24-稳定性的影响。结果表明,随K2FeO4初始浓度和温度升高,FeO42-稳定性下降;Fe3+使FeO42-稳定性迅速下降,且加入氯化铁的FeO42-比加入硝酸铁的FeO42-稳定;磷酸钠和草酸钠使FeO24-的稳定性降低,而氯化钾、氯化钠、醋酸钠能不同程度地增强FeO42-的稳定性,其中氯化钾的效果最好。
The effects of initial concentration of K2FeO4, temperature and different media on the stability of FeO24 were investigated in an alkaline aqueous buffer solution at pH = 9.40. The results showed that with the increase of initial concentration and temperature of K2FeO4, the stability of FeO42- decreased. The FeO42- stability decreased rapidly with the addition of Fe3 +, and FeO42- was more stable than that of ferric nitrate with FeO42-. Sodium phosphate and sodium oxalate The stability of FeO24- decreased, while potassium chloride, sodium chloride, sodium acetate can enhance the stability of FeO42- to some extent, of which potassium chloride is the best.