烟台四十里湾潮间带表层沉积物中铁的形态研究
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摘要
研究烟台四十里湾潮间带表层沉积物中铁形态,为潮间带沉积物中铁污染提供理论依据。应用Tessier连续提取法测定了表层沉积物中铁的可交换态、碳酸盐结合态、铁锰氧化物结合态、有机结合态及残渣态含量,讨论并分析沉积物中总铁和各形态铁分布特征及相关性。研究结果表明各采样点沉积物中铁的含量相差不大,铁形态以残渣态为主,占总铁的比例范围为56.43%～85.92%,有效态铁占总铁的比例范围为14.08%～43.57%。相关性分析结果表明总铁含量主要受残渣态铁控制,可交换态铁与其他形态铁及总铁的相关性反映了铁在水体和沉积物中的迁移转化。
To provide a theoretical basis for iron pollution in sediment,iron speciation in the sediments from the intertidal zone of Yantai Sishili bay was studied in this paper.Contents of exchangeable,carbonate,Fe-Mn oxide,organic and residual iron in surface sediments were analyzed by Tessier sequential extraction procedure.Distribution and correlation of total iron and different iron speciation in surface sediments were discussed in detail.The results showed that the contents of iron in different sampling sites had no significant difference.The iron speciation was dominated by residual iron with percentage of 56.43%～85.92%,while the percentage of bio-available fraction iron was 14.08%～43.57%.Correlation analysis showed that the content of total iron was mainly controlled by residual iron.Correlation between exchangeable iron and other iron forms as well as total iron reflected the migration of iron between water and sediment.
To provide a theoretical basis for iron pollution in sediment,iron speciation in the sediments from the intertidal zone of Yantai Sishili bay was studied in this paper.Contents of exchangeable,carbonate,Fe-Mn oxide,organic and residual iron in surface sediments were analyzed by Tessier sequential extraction procedure.Distribution and correlation of total iron and different iron speciation in surface sediments were discussed in detail.The results showed that the contents of iron in different sampling sites had no significant difference.The iron speciation was dominated by residual iron with percentage of 56.43%～85.92%,while the percentage of bio-available fraction iron was 14.08%～43.57%.Correlation analysis showed that the content of total iron was mainly controlled by residual iron.Correlation between exchangeable iron and other iron forms as well as total iron reflected the migration of iron between water and sediment.
引文
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[20] MARTíNEZ T,TEJEDA S,ESTA?OL B,et al.Chemical and sequential analysis of some metals in sediments from the North coast of the Gulf of Mexico[J].Journal of Radioanalytical and Nuclear Chemistry,2016,309(1):343-350.
[2] LI C,YANG S Y,LIAN E G,et al.Chemical speciation of iron in sediments from the Changjiang Estuary and East China Sea:iron cycle and paleoenvironmental implications[J].Quaternary International,2017,452:116-128.
[3] 潘晓峰,阎百兴,王莉霞.三江平原河水中铁的形态研究[J].环境科学,2010,31(9):2042-2047.
[4] 屠霄霞.铁对海洋初级生产力的影响[J].农机化研究,2007,29(3):18-20.
[5] 欧明明,张曼平,冯媛媛.海水中铁的几种形态对海生小球藻生长的影响[J].青岛海洋大学学报,2002,32(4):627-633.
[6] 杨文斌,唐皓,韩超,等.太湖沉积物铁形态分布特征及磷铁相关性分析[J].中国环境科学,2016,36(4):1145-1156.
[7] 杨宏伟,吴雅丽,马旭阳.黄河干流表层沉积物铁形态的分布特征及相关性分析[J].中国环境科学,2015,35(12):3663-3669.
[8] TAO J,MA W W,ZHU M X,et al.Characterization of iron diagenesis in marine sediments using refined iron speciation and quantized iron(III)-oxide reactivity:a case study in the Jiaozhou Bay,China[J].Acta Oceanologica Sinica,2017,36(7):48-55.
[9] 尹洪斌,范成新,李宝,等.太湖北部沉积物中铁硫的地球化学特征研究[J].地球化学,2008,37(6):595-601.
[10] SUN Q Y,SHENG Y Q,YANG J,et al.Dynamic characteristics of sulfur,iron and phosphorus in coastal polluted sediments,North China[J].Environmental Pollution,2016,219:588-595.
[11] MA W W,ZHU M X,YANG G P,et al.In situ,high-resolution DGT measurements of dissolved sulfide,iron and phosphorus in sediments of the East China Sea:insights into phosphorus mobilization and microbial iron reduction[J].Marine Pollution Bulletin,2017,124(1):400-410.
[12] KUNO A,MATSUO M,WANG Q,et al.Iron speciation of sediments from Kuhai Lake in China by M?ssbauer spectroscopy[J].Hyperfine Interactions,2005,166(1/2/3/4):637-642.
[13] KUNO A,MATSUO M,CHIBA S,et al.Seasonal variation of iron speciation in a pearl-raising bay sediment by M?ssbauer Spectroscopy[J].Journal of Nuclear and Radiochemical Sciences,2008,9(1):13-18.
[14] 弓晓峰,杨菊云,刘春英,等.鄱阳湖典型湿地土壤铁形态分布特征[J].南昌大学学报:工科版,2015,37(1):1-6.
[15] 沈春燕,施平,赵辉.烟台四十里湾叶绿素a浓度的时空分布特征及其影响机制[J].海洋科学,2014,38(9):33-38.
[16] 曾江宁,曾淦宁,黄韦艮,等.赤潮影响因素研究进展[J].东海海洋,2004,22(4):40-47.
[17] TESSIER A,CAMPBELL P G C,BISSON M.Sequential extraction procedure for the speciation of particulate trace metals[J].Analytical Chemistry,1979,51(7):844-851.
[18] HAKIMA Z,MOHAMED M,AZIZA M,et al.Environmental and ecological risk of heavy metals in the marine sediment from Dakhla Bay,Morocco[J].Environmental Science and Pollution Research,2017,24(9):7970-7981.
[19] DUODU G O,GOONETILLEKE A,AYOKO G A.Potential bioavailability assessment,source apportionment and ecological risk of heavy metals in the sediment of Brisbane River estuary,Australia[J].Marine Pollution Bulletin,2017,117(1/2):523-531.
[20] MARTíNEZ T,TEJEDA S,ESTA?OL B,et al.Chemical and sequential analysis of some metals in sediments from the North coast of the Gulf of Mexico[J].Journal of Radioanalytical and Nuclear Chemistry,2016,309(1):343-350.
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