Colour Reaction of Calcium with DBC-Chlorophosphonazo in Ethanol-Aqueous Medium and Analysis for Calcium in Baotou Iron Ores

Wang Lihua; Peng Yanxiang; Dong Junping

doi:10.13374/j.issn1001-053x.1997.03.021

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Wang Lihua, Peng Yanxiang, Dong Junping. Colour Reaction of Calcium with DBC-Chlorophosphonazo in Ethanol-Aqueous Medium and Analysis for Calcium in Baotou Iron Ores[J]. Chinese Journal of Engineering, 1997, 19(3): 316-319. doi: 10.13374/j.issn1001-053x.1997.03.021

Citation:

Wang Lihua, Peng Yanxiang, Dong Junping. Colour Reaction of Calcium with DBC-Chlorophosphonazo in Ethanol-Aqueous Medium and Analysis for Calcium in Baotou Iron Ores[J]. Chinese Journal of Engineering, 1997, 19(3): 316-319. doi: 10.13374/j.issn1001-053x.1997.03.021

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Colour Reaction of Calcium with DBC-Chlorophosphonazo in Ethanol-Aqueous Medium and Analysis for Calcium in Baotou Iron Ores

doi: 10.13374/j.issn1001-053x.1997.03.021

1. Applied Science School, UST Beijing, Beijing 100083, China;
2. Inboratory Admimstrative Office, UST Beijing

Received Date: 1996-08-18
Available Online: 2021-09-04

Abstract

Abstract

The conditions of colour reaction of calciun and DBC-chlorophosphonazo in ethanol-aqueous medium were optimized and analytical charateristics of this colour system was examied. A decomposition method and interference-free method for determination of calcium in complex Baotou iron ores were investigated. A spectophotometry with simple separation for determination of calcium in Baotou iron ores was developed.
- calcium,
- DBC-chlorophosphonazo,
- ethanol,
- Baotou iron ores,
- pectrophotometry