Comparison of effectiveness of different ashing auxiliaries for determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method

doi:10.1016/S0043-1354(03)00267-7

	Comparison of effectiveness of different ashing auxiliaries for determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method
	Zhou, Y; Zhang, FS; Yang, HS; Zhang, SM; Ma, XN
	2003-09-01
发表期刊	WATER RESEARCH
ISSN	0043-1354
卷号	37 期号:16 页码:3875-3882
文章类型	Article
摘要	An improved method for the determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method is proposed. The recoveries of phosphorus (P) from selected inorganic and organic P-containing compound standards after ignition with different auxiliaries, such as MgSO4, Mg(NO3)(2), MgO2, Mg(Ac-2) and CaCl2, were compared. We found that the phosphorus from most compound standards could not be completely recovered when these compounds were ignited (450-500degreesC) with the MgSO4 as auxiliary and the baked residue was extracted with 0.2 mol l(-1) HCl for 30min at 80degreesC or at room temperature. P recoveries, for example, were poor, less than 85%, if pyrophosphate and metaphosphate were ignited with the addition Of MgSO4 prior to the extraction of the baked residue with 0.2 mol l(-1) HCl at 80degreesC for 30 min. In contrast, MgO2, Mg(Ac)(2) and CaCl2, as well as Mg(NO3)(2), could all yield complete P recoveries at routine ashing temperatures (450-500degreesC). The results demonstrate that MgC12 is a more effective auxiliary agent for the determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method than MgSO4 which is commonly used. (C) 2003 Elsevier Science Ltd. All rights reserved.; An improved method for the determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method is proposed. The recoveries of phosphorus (P) from selected inorganic and organic P-containing compound standards after ignition with different auxiliaries, such as MgSO4, Mg(NO3)(2), MgO2, Mg(Ac-2) and CaCl2, were compared. We found that the phosphorus from most compound standards could not be completely recovered when these compounds were ignited (450-500degreesC) with the MgSO4 as auxiliary and the baked residue was extracted with 0.2 mol l(-1) HCl for 30min at 80degreesC or at room temperature. P recoveries, for example, were poor, less than 85%, if pyrophosphate and metaphosphate were ignited with the addition Of MgSO4 prior to the extraction of the baked residue with 0.2 mol l(-1) HCl at 80degreesC for 30 min. In contrast, MgO2, Mg(Ac)(2) and CaCl2, as well as Mg(NO3)(2), could all yield complete P recoveries at routine ashing temperatures (450-500degreesC). The results demonstrate that MgC12 is a more effective auxiliary agent for the determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method than MgSO4 which is commonly used. (C) 2003 Elsevier Science Ltd. All rights reserved.
关键词	Ignition Method Phosphorus Recovery P-containing Compounds Ashing Auxiliary
学科领域	Engineering, Environmental ; Environmental Sciences ; Water Resources
DOI	10.1016/S0043-1354(03)00267-7
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000184857700009
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/2810
专题	海洋生态与环境科学重点实验室
作者单位	Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Y,Zhang, FS,Yang, HS,et al. Comparison of effectiveness of different ashing auxiliaries for determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method[J]. WATER RESEARCH,2003,37(16):3875-3882.
APA	Zhou, Y,Zhang, FS,Yang, HS,Zhang, SM,&Ma, XN.(2003).Comparison of effectiveness of different ashing auxiliaries for determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method.WATER RESEARCH,37(16),3875-3882.
MLA	Zhou, Y,et al."Comparison of effectiveness of different ashing auxiliaries for determination of phosphorus in natural waters, aquatic organisms and sediments by ignition method".WATER RESEARCH 37.16(2003):3875-3882.

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