Membrane preconcentration of iron in seawater samples and on-site determination in spectrophotometry

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	Membrane preconcentration of iron in seawater samples and on-site determination in spectrophotometry
	Peng Yuanzhen ; Yuan Dongxing ; Huang Yongming ; Jiang Tao ; Liu Baomin ; Yuan DX(袁东星)
刊名	http://dx.doi.org/10.1007/s00343-012-1096-9
	2012-03
关键词	ABSORPTION SPECTROMETRIC DETERMINATIONS SOLID-PHASE EXTRACTION DISSOLVED IRON SURFACE WATERS ATLANTIC-OCEAN FE(III) FERROZINE CU(II) CO(II) RESIN
英文摘要	State Key Laboratory of Marine Environmental Science (MEL) [MELRI1001]; A novel method for on-site determination of trace iron was developed using membrane preconcentration and spectrophotometric detection. Fe(II)-ferrozine complex was reacted with cetyltrimethylammonium bromide (CTAB) to form a Fe(II)-ferrozine-CTAB paired compound, which was collected on a membrane by filtration under vacuum. The membrane was immersed in 2 mL of ethanol-nitric acid and the absorbance of the solution measured for quantitative analysis. Various factors affecting the iron collection and determination were investigated. With different sample preconcentration volumes, the range of determination was broadened to 0.5-120 mu g/L. The detection limit of this method reached 0.19 mu g/L and the recoveries were between 97.2 and 109% when the concentration enrichment was about 45. The relative standard deviation (n = 7) was 1.9% for samples containing 10 mu g/L Fe. Twelve seawater samples were analyzed on-site using the proposed method, and two were also analyzed in inductively coupled plasma mass spectrometry. No significant difference was shown between the two methods by the Student's t-test. The method has also been used on-site for iron enrichment experiments with phytoplankton and concluded to be simple, accurate and inexpensive.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60735]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Peng Yuanzhen,Yuan Dongxing,Huang Yongming,et al. Membrane preconcentration of iron in seawater samples and on-site determination in spectrophotometry[J]. http://dx.doi.org/10.1007/s00343-012-1096-9,2012.
APA	Peng Yuanzhen,Yuan Dongxing,Huang Yongming,Jiang Tao,Liu Baomin,&袁东星.(2012).Membrane preconcentration of iron in seawater samples and on-site determination in spectrophotometry.http://dx.doi.org/10.1007/s00343-012-1096-9.
MLA	Peng Yuanzhen,et al."Membrane preconcentration of iron in seawater samples and on-site determination in spectrophotometry".http://dx.doi.org/10.1007/s00343-012-1096-9 (2012).