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This study investigates the distribution differences of reactive iron, manganese, and arsenic at the sediment\u2013water interface under anaerobic and aerobic conditions at different pH levels. The strong buffering capacity of sediment to water pH results in a shift towards neutral pH values in the overlying water under different initial pH conditions. The level of DO becomes a key factor in the release of As from sediment, with lower DO environments exhibiting higher release quantities and rates of As compared to high DO environments. Under low DO conditions, the combined effects of ion exchange and anaerobic reduction lead to the most significant release of As, particularly under pH 9.5 conditions. The formation of amorphous ferrous sulfide compounds under low DO conditions is a significant factor contributing to increased arsenic concentration in the interstitial water. Therefore, the re-migration of endogenous arsenic in shallow lake sediments should consider the combined effects of multiple driving forces.<\/jats:p>","DOI":"10.3390\/toxics11110890","type":"journal-article","created":{"date-parts":[[2023,10,30]],"date-time":"2023-10-30T13:26:55Z","timestamp":1698672415000},"page":"890","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["The Effects and Mechanisms of pH and Dissolved Oxygen Conditions on the Release of Arsenic at the Sediment\u2013Water Interface in Taihu Lake"],"prefix":"10.3390","volume":"11","author":[{"given":"Liqing","family":"Zeng","sequence":"first","affiliation":[{"name":"Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8186-1616","authenticated-orcid":false,"given":"Changzhou","family":"Yan","sequence":"additional","affiliation":[{"name":"Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fan","family":"Yang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuo","family":"Zhen","sequence":"additional","affiliation":[{"name":"Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-1468-035X","authenticated-orcid":false,"given":"Jiaming","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-3762-0287","authenticated-orcid":false,"given":"Jielun","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujie","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuhui","family":"Xiao","sequence":"additional","affiliation":[{"name":"Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wen","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Public Health and Medical Technology, Xiamen Medical College, Xiamen 361021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,10,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"165232","DOI":"10.1016\/j.scitotenv.2023.165232","article-title":"Arsenic in the hyperaccumulator Pteris vittata: A review of benefits, toxicity, and metabolism","volume":"896","author":"Zhao","year":"2023","journal-title":"Sci. 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