Effect of salinity on the determination of dissolved non-reactive phosphorus and total dissolved phosphorus in coastal waters

doi:10.1002/wer.10706

	Effect of salinity on the determination of dissolved non-reactive phosphorus and total dissolved phosphorus in coastal waters
	Hu, Nana 1,2; Tang, Qi 1,2; Sheng, Yanqing1
发表期刊	WATER ENVIRONMENT RESEARCH
ISSN	1061-4303
	2022-04-01
卷号	94 期号:4 页码:13
关键词	determination dissolved non-reactive phosphorus salinity total dissolved phosphorous
DOI	10.1002/wer.10706
通讯作者	Sheng, Yanqing(yqsheng@yic.ac.cn)
英文摘要	The salinity may affect the phosphorus (P) determination accuracy in coastal waters, especially for the dissolved non-reactive P (DNRP) and total dissolved P (TDP). In this work, the competition mechanism between NaCl and DNRP for oxidants (K2S2O8, the most commonly used and recognized oxidant) was identified in different DNRP determinations. Furthermore, salinity influences on determinations of tetrasodium pyrophosphate decahydrate, glyphosate, phytic acid sodium salt hydrate, adenosine-5'-nomophosphate disodium, and TDP were investigated. The results indicated that approximately 10% IHP6 and AMP would be transferred to dissolved reactive P (DRP) during digestion without K2S2O8. When NaCl increased from 0% to 3.5% with fresh water method, the determination of Gly + K2HPO4 and IHP6 + K2HPO4 decreased by 8.0% +/- 0.00% and 24% +/- 0.01%, respectively. In addition, the determinations of DNRPs and TDP with different salinities in natural coastal waters by fresh water method and seawater method were performed. It showed that when the salinity >5.0 PSU, the DNRPs and TDP determination results presented deviations. At a salinity of 35.0 PSU, the TDP (KH2PO4 + Gly + IHP6 + AMP) reduction measured by two methods was more than 12.3% +/- 0.46%. Furthermore, oxidants with higher digestion efficiency than K2S2O8 should be developed. Practitioner Points similar to 10% IHP6 and AMP could be transferred to DRP during digestion without K2S2O8 addition. Salinity affects the DNRPs determination results mainly due to competition for oxidants and complexation with metal ions. More than 12.3% TDP in coastal waters could not be measured when the salinity was 35.0 PSU.
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Project of Shandong Provincial Natural Science Foundation
收录类别	SCI
语种	英语
关键词[WOS]	ORGANIC PHOSPHORUS ; PERSULFATE DIGESTION ; NATURAL-WATERS ; P-31 NMR ; HYDROLYSIS ; GLYPHOSATE ; TEMPERATURE ; INHIBITOR ; COMPLEXES ; NITROGEN
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS记录号	WOS:000787828800003
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31265
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
通讯作者	Sheng, Yanqing
作者单位	1.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Hu, Nana,Tang, Qi,Sheng, Yanqing. Effect of salinity on the determination of dissolved non-reactive phosphorus and total dissolved phosphorus in coastal waters[J]. WATER ENVIRONMENT RESEARCH,2022,94(4):13.
APA	Hu, Nana,Tang, Qi,&Sheng, Yanqing.(2022).Effect of salinity on the determination of dissolved non-reactive phosphorus and total dissolved phosphorus in coastal waters.WATER ENVIRONMENT RESEARCH,94(4),13.
MLA	Hu, Nana,et al."Effect of salinity on the determination of dissolved non-reactive phosphorus and total dissolved phosphorus in coastal waters".WATER ENVIRONMENT RESEARCH 94.4(2022):13.