气候变化领域集成服务门户(CCPortal): The migrated behavior and bioavailability of arsenic in mangrove sediments affected by pH and organic acids

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DOI	10.1016/j.marpolbul.2020.111480
	The migrated behavior and bioavailability of arsenic in mangrove sediments affected by pH and organic acids
	Mei K.; Liu J.; Shi R.; Guo X.; Lu H.; Yan C.
发表日期	2020
ISSN	0025326X
卷号	159
英文摘要	Batch experiments were conducted to study the migration behavior of arsenic (As) and iron (bivalent, trivalent, and total Fe) of the presence of the low molecular weight organic acids (LMWOAs) citric acid, malic acid, and oxalic acid in As-enriched mangrove sediments. The results for supernatant As/Fe species were significant according to each LMWOA treatment. Significant non-linear correlations were found among As level, pH, and acid dose based on our predictive model. The capacity of LMWOAs to mobilize As/Fe species followed the order of citric acid > malic acid/oxalic acid. The supernatant As correlated positively with the LMWOAs dose and negatively correlated with the pH. As migration was affected by acid strength, the number of carboxyl groups, the pH and levels of Fe compounds in the sediments. The results indicate that LMWOAs can potentially attenuate As contamination from mangrove sediment, allowing for a better understanding of As/Fe behavior in the rhizosphere. © 2020 Elsevier Ltd
英文关键词	Arsenic; Fe species; Low molecular weight organic acids (LMWOAs); Mobilization and migration; Solution pH
语种	英语
scopus关键词	Arsenic; Biochemistry; Citric acid; Iron compounds; Predictive analytics; Sediments; Soils; Acid strengths; As contaminations; Batch experiments; Carboxyl groups; Low molecular weight organic acid; Mangrove sediments; Non-linear correlations; Predictive modeling; Oxalic acid; acid; arsenic; carboxyl group; carboxylic acid; citric acid; iron; iron derivative; malic acid; oxalic acid; organic compound; arsenic; bioavailability; coastal sediment; experimental study; iron; mangrove; organic acid; pH; pollutant transport; pollution monitoring; rhizosphere; Article; concentration (parameter); controlled study; correlation analysis; mangrove; mathematical model; molecular weight; nonhuman; pH; pollution transport; prediction; predictive model; rhizosphere; sediment; soil pollution; supernatant; bioavailability; pH; Arsenic; Biological Availability; Hydrogen-Ion Concentration; Molecular Weight; Organic Chemicals; Oxalic Acid
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148680
作者单位	Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen, 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
推荐引用方式 GB/T 7714	Mei K.,Liu J.,Shi R.,et al. The migrated behavior and bioavailability of arsenic in mangrove sediments affected by pH and organic acids[J],2020,159.
APA	Mei K.,Liu J.,Shi R.,Guo X.,Lu H.,&Yan C..(2020).The migrated behavior and bioavailability of arsenic in mangrove sediments affected by pH and organic acids.Marine Pollution Bulletin,159.
MLA	Mei K.,et al."The migrated behavior and bioavailability of arsenic in mangrove sediments affected by pH and organic acids".Marine Pollution Bulletin 159(2020).