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标题：Studies Regarding the Obtaining of the PK Fertilizer with the Copper and Zinc Microelement
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作者：Mihaela Ciopec ; Aurel Iovi ; Petru Negrea 等
期刊名称：Universitatea Politehnica din Timisoara. Buletinul Stiintific. Seria Chimie si Ingineria Mediului
印刷版ISSN：1224-6018
出版年度：2006
卷号：51(65)
期号：01-02
出版社：Universitatea Politehnica din Timisoara
摘要：The fertilizers play a very important roll in the plant growing and development. The fertilizers with microelements supply to the plant the needed nutritive substances, which doesn’t exist or are insufficient in soil. In the present paper were studied the conditions establishment of the double pyrophosphate of zinc and potassium obtaining, respective of copper and potassium from solutions of zinc and cooper sulfate and potassium pyrophosphate. In this way was followed the variation of the mass reaction pH, electric conductance and zinc and copper separation degree, versus the molar ratio Me²⁺: P₂O₇^4- and versus temperature.
关键词：PK fertilisers, double pyrophosphate of zinc and potassium, double pyrophosphate of copper