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

doi:10.1002/wer.10706

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	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, Yanqing 2
刊名	WATER ENVIRONMENT RESEARCH
	2022-04-01
卷号	94 期号:4 页码:13
关键词	determination dissolved non-reactive phosphorus salinity total dissolved phosphorous
ISSN号	1061-4303
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.
WOS关键词	ORGANIC PHOSPHORUS ; PERSULFATE DIGESTION ; NATURAL-WATERS ; P-31 NMR ; HYDROLYSIS ; GLYPHOSATE ; TEMPERATURE ; INHIBITOR ; COMPLEXES ; NITROGEN
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
语种	英语
WOS记录号	WOS:000787828800003
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Project of Shandong Provincial Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/31264]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者	Sheng, Yanqing
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Yantai 264003, 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.