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	Reverse flow injection analysis of nanomolar soluble reactive phosphorus in seawater with a long path length liquid waveguide capillary cell and spectrophotometric detection
	Ma, Jian ; Yuan, Dongxing ; Yuan DX(袁东星) ; Zhang, Min ; Liang, Ying
	2009-04-15
关键词	Reverse flow injection analysis Liquid waveguide capillary cell Seawater Nanomolar Soluble reactive phosphorus
英文摘要	A novel reverse flow injection analysis method coupled with a liquid waveguide capillary cell (LWCC) and spectrophotometric detection for the determination of nanomolar soluble reactive phosphorus in seawater was established. Reagent was injected into the sample stream and detected in a 2-m path length LWCC with detection wavelength set at 710 nm. Experimental parameters, including the reagent concentration, the injection volume, the flow rate and the length of the mixing coil, were optimized based on univariate experimental design. The interference of silicate and arsenate were also investigated. Under optimized conditions, the linearity and the detection limit of the proposed method were found to be 0-165.0 nM and 0.5 nM, which was estimated to be three times the standard deviation of the measurement blanks (n = 9). The relative standard deviations for the determination of 24.7 and 82.5 nM samples were 1.54% and 1.86% (n = 9). respectively. Three seawater samples were analyzed with recoveries ranging from 87.8% to 101.8%. Using the Student's t-test at the 95% confidence level, the results of the proposed method and a segmented flow analyzer reference method for determination of the two samples showed no significant difference. The proposed method had the advantages of being less reagent consuming, more sensitive and with higher throughput (15 h(-1)). (c) 2008 Elsevier B.V. All rights reserved.; National High Technology Research and Development Program of China [2006AA09ZI74, 2007AA061501]
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.talanta.2008.11.017]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Ma, Jian,Yuan, Dongxing,Yuan DX,et al. Reverse flow injection analysis of nanomolar soluble reactive phosphorus in seawater with a long path length liquid waveguide capillary cell and spectrophotometric detection[J],2009.
APA	Ma, Jian,Yuan, Dongxing,袁东星,Zhang, Min,&Liang, Ying.(2009).Reverse flow injection analysis of nanomolar soluble reactive phosphorus in seawater with a long path length liquid waveguide capillary cell and spectrophotometric detection..
MLA	Ma, Jian,et al."Reverse flow injection analysis of nanomolar soluble reactive phosphorus in seawater with a long path length liquid waveguide capillary cell and spectrophotometric detection".(2009).

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