An improved method for the extraction of low molecular weight organic acids in variable charge soils

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	An improved method for the extraction of low molecular weight organic acids in variable charge soils
	Wang, Xingxiang ; Li, Qingman ; Ding, Jianhua ; Luo, Mingbiao ; Zhang, Taolin ; Zhou, Yiyong
刊名	ANALYTICAL SCIENCES
	2007-05-01
卷号	23 期号:5 页码:539-543
关键词	NORWAY SPRUCE FOREST SOIL CHROMATOGRAPHY RHIZOSPHERE ANIONS PLANTS ROOTS HPLC
ISSN号	0910-6340
通讯作者	Li, QM, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	Due to specific adsorption to variable charge soils, low molecular weight organic acids (LMWOAs) have not been sufficiently extracted, even if common extractants, such as water and 0.1 M sodium hydroxide (NaOH), were employed. In this work, the method for extracting LMWOAs in soils with 0.1 M NaOH was improved for variable charge soils; e.g. 1.0 M potassium fluoride (KF) with pH 4.0 was applied as an extractant jointed with 0.1 M NaOH based on its stronger ability to change the electrochemical properties of variable charge soils by specific adsorption. With the proposed method, the recoveries of oxalic, tartaric, malic, citric and fumaric acids were increased from 83 4, 93 1, 22 2, 63 +/- 5 and 84 +/- 3% to 98 +/- 2, 100 +/- 2, 85 +/- 2, 90 +/- 2 and 89 +/- 2%, respectively, compared with NaOH alone. Simultaneously, the LMWOAs in Agri-Udic Ferrosol with field moisture were measured with a satisfactory result.
英文摘要	Due to specific adsorption to variable charge soils, low molecular weight organic acids (LMWOAs) have not been sufficiently extracted, even if common extractants, such as water and 0.1 M sodium hydroxide (NaOH), were employed. In this work, the method for extracting LMWOAs in soils with 0.1 M NaOH was improved for variable charge soils; e.g. 1.0 M potassium fluoride (KF) with pH 4.0 was applied as an extractant jointed with 0.1 M NaOH based on its stronger ability to change the electrochemical properties of variable charge soils by specific adsorption. With the proposed method, the recoveries of oxalic, tartaric, malic, citric and fumaric acids were increased from 83 4, 93 1, 22 2, 63 +/- 5 and 84 +/- 3% to 98 +/- 2, 100 +/- 2, 85 +/- 2, 90 +/- 2 and 89 +/- 2%, respectively, compared with NaOH alone. Simultaneously, the LMWOAs in Agri-Udic Ferrosol with field moisture were measured with a satisfactory result.
学科主题	Chemistry, Analytical
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Analytical
研究领域[WOS]	Chemistry
关键词[WOS]	NORWAY SPRUCE ; FOREST SOIL ; CHROMATOGRAPHY ; RHIZOSPHERE ; ANIONS ; PLANTS ; ROOTS ; HPLC
收录类别	SCI
语种	英语
WOS记录号	WOS:000246716000007
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8610]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 3.E China Inst Technol, Fuzhou 344000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xingxiang,Li, Qingman,Ding, Jianhua,et al. An improved method for the extraction of low molecular weight organic acids in variable charge soils[J]. ANALYTICAL SCIENCES,2007,23(5):539-543.
APA	Wang, Xingxiang,Li, Qingman,Ding, Jianhua,Luo, Mingbiao,Zhang, Taolin,&Zhou, Yiyong.(2007).An improved method for the extraction of low molecular weight organic acids in variable charge soils.ANALYTICAL SCIENCES,23(5),539-543.
MLA	Wang, Xingxiang,et al."An improved method for the extraction of low molecular weight organic acids in variable charge soils".ANALYTICAL SCIENCES 23.5(2007):539-543.