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Determination of Amorphous Iron Oxides in Soil by Hydroxylamine Extraction-Spectrophotometry
Chi Guangyu1; Zhang Zhaowei3; Chen Xin1; Shi Yi1
2008
Source PublicationSPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN1000-0593
Volume28Issue:12Pages:2931-2934
AbstractAmorphous iron oxides in soil were determined by hydroxylamine extraction-spectrophotometry. The results showed that hydroxylamine extraction eliminates interference of magnetite and the defect of results being on the high side was overcome to a certain degree compared with oxalic acid-oxalic acid ammonium extraction. The hydroxylamine extraction-spectrophotometry for the detection of amorphous iron oxides in soil was highly precise (relative standard deviation was less than 2.0%) and highly reliable (recovery rates ranged from 97.5% to 101.5%). Other advantages of the method were rapidness, simplicity and a shorter chromogenic time. In addition, soil incubated anaerobically at constant temperature under laboratory condition was investigated. The results suggested that iron reduction rates during initiation, rapid reaction and steady phases in the soil samples anaerobic incubation were 0.030-0.053, 0.186-0.333 and 0.015-0.030 g center dot d(-1) center dot kg(-1), respectively. Significant relationship between the concentrations of hydroxylamine extraction iron and iron reduction rates during rapid reaction phase in soil incubation (r = 0.9907, p<0.01) indicated that hydroxylamine had a higher degree of selectivity in amorphous iron oxides extraction than oxalic acid-oxalic acid ammonium extraction.
KeywordOXALATE DITHIONITE SEDIMENTS FE Spectrophotometry Amorphous iron oxides in soil Oxalic acid-oxalic acid ammonium extraction Hydroxylamine extraction
Indexed ByCSCD
Language英语
CSCD IDCSCD:3443884
Citation statistics
Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/154760
Collection中国科学院金属研究所
Affiliation1.中国科学院
2.中国科学院大学
3.中国科学院金属研究所
Recommended Citation
GB/T 7714
Chi Guangyu,Zhang Zhaowei,Chen Xin,et al. Determination of Amorphous Iron Oxides in Soil by Hydroxylamine Extraction-Spectrophotometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2008,28(12):2931-2934.
APA Chi Guangyu,Zhang Zhaowei,Chen Xin,&Shi Yi.(2008).Determination of Amorphous Iron Oxides in Soil by Hydroxylamine Extraction-Spectrophotometry.SPECTROSCOPY AND SPECTRAL ANALYSIS,28(12),2931-2934.
MLA Chi Guangyu,et al."Determination of Amorphous Iron Oxides in Soil by Hydroxylamine Extraction-Spectrophotometry".SPECTROSCOPY AND SPECTRAL ANALYSIS 28.12(2008):2931-2934.
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