| 微波加热技术用于重量法测定SO_4~(2-) |
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| 引用本文： | 周玉翔,王会贤. 微波加热技术用于重量法测定SO_4~(2-)[J]. 磷肥与复肥, 2001, 0(1) |
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| 作者姓名： | 周玉翔 王会贤 |
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| 作者单位： | 云南磷化学工业(集团)公司海口磷矿!云南昆明650113 |
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| 摘 要： | 介绍利用玻璃坩埚过滤ＢａＳＯ４沉淀，微波加热恒重，测定磷矿石、湿法磷酸及合成标样中的ＳＯ４２－，利用提高酸度和一次性加入 ＢａＣｌ２溶液减少干扰离子的共沉淀现象。通过试验确定了微波恒重时间 ４５ ｍｉｎ即可，并推荐磷矿试样采用酸溶分解法，好于熔融法。
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| 关 键 词： | SO42- 重量法 测定 微波加热技术 |
Gravimetric determination of SO_4~(2-) with microwave heating technique |
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| ZHOU Yu-xiang,WANG Hui-xian. Gravimetric determination of SO_4~(2-) with microwave heating technique[J]. Phosphate & Compound Fertilizer, 2001, 0(1) |
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| Authors: | ZHOU Yu-xiang WANG Hui-xian |
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| Abstract: | The gravimetric determination of SO42- in phosphate rock, wet process phosphoric acid and other made-up standard samples is taken by filtering BaSO4 deposit with glass crucible, then heating the deposit to constant weight with microwave. Besides, co-deposit of interfering ion is decreased by increasing acidity and adding BaCl2 solution once only. Through experiment, some suggestions are presented that the microwave time is 45 min. And the acid treatment is better than melt in preparation of sample of phosphate rock. |
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| Keywords: | SO42- gravimetric analysis determination microwave heating technique |
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