SEPARATION AND DETERMINATION OF SULFIDES COMBINED WITH IRON IN THE GEOLOGICAL SAMPLES

ZHOU Jiaqi; HU Chaoyong; MA Zhongwu; XIE Shucheng

doi:10.3724/SP.J.1140.2010.02143

2010 Vol. 30, No. 2

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Article navigation > Marine Geology & Quaternary Geology > 2010 > 30(2): 143-146

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ZHOU Jiaqi, HU Chaoyong, MA Zhongwu, XIE Shucheng. SEPARATION AND DETERMINATION OF SULFIDES COMBINED WITH IRON IN THE GEOLOGICAL SAMPLES[J]. Marine Geology & Quaternary Geology, 2010, 30(2): 143-146. doi: 10.3724/SP.J.1140.2010.02143

Citation:

ZHOU Jiaqi, HU Chaoyong, MA Zhongwu, XIE Shucheng. SEPARATION AND DETERMINATION OF SULFIDES COMBINED WITH IRON IN THE GEOLOGICAL SAMPLES[J]. Marine Geology & Quaternary Geology, 2010, 30(2): 143-146. doi: 10.3724/SP.J.1140.2010.02143

SEPARATION AND DETERMINATION OF SULFIDES COMBINED WITH IRON IN THE GEOLOGICAL SAMPLES

Ministry of Education Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China

Received Date: 17 September 2009

Revised Date: 27 November 2009

Abstract

Abstract

A method was proposed for the determination of trace iron released from sulfides in geological samples. Iron was extracted and spectrophotometry measured by sulphosalicylic acid after sulfides were oxidized by sodium hypochlorite. The results show that 30% of sodium hypochlorite soaking the sample for more than 40 hours could transform iron sulfides completely into colloidal ferric hydroxide, which can be easily extracted by the sulphosalicylic acid solution. We integrate the selective sepatation,enrichment and determination of iron in the procedure to make the method simple and suitable for determination of iron sulfides in geological samples.
- iron sulfides /
- sodium hypochlorite /
- sulphosalicylic acid /
- spectrophotometer

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References

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