海水中溶解态铁的伏安极谱法与液芯波导光纤法测定

龙爱民; 党爱翠; 程远月; 陈绍勇

海水中溶解态铁的伏安极谱法与液芯波导光纤法测定

1.
中国科学院, 南海海洋研究所中国科学院热带海洋环境动力学重点实验室, 广东, 广州, 510301
2.
中国科学院, 南海海洋研究所中国科学院热带海洋环境动力学重点实验室, 广东, 广州, 510301;中国科学院研究生院, 北京, 1000392
3.
中国科学院, 广州地球化学研究所中国科学院边缘海地质重点实验室, 广东, 广州, 510640

基金项目: 中国科学院知识创新方向项目(KZCX2-YW-215);中国大洋协会项目(DYXM115-02-1-08);国家“863”项目(2006AA09Z182);国家科技支撑计划南沙专项(2006BAB19B03);广东省科技计项项目(2005B33201007)

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出版历程
- 收稿日期: 2008-06-05
- 修回日期: 2008-12-29

Determining dissolved iron in seawater using voltammetry and liquid wave-guide capillary cells

1.
Key laboratory of Tropical Marine Environmental Dynamics of Chinese Academy of Sciences, South China Sea Institute of Oceanology, Guangzhou 510301, China
2.
Key laboratory of Tropical Marine Environmental Dynamics of Chinese Academy of Sciences, South China Sea Institute of Oceanology, Guangzhou 510301, China;Graduate school, Chinese Academy of Sciences, Beijing 100039, China
3.
Geochemistry Institute of Guangzhou, Chinese Academy of Sciences, Key Laboratory of Marginal Sea Geology of South China Sea Institute of Oceanology, Guangzhou 510640, China

摘要

摘要: 尽管铁为地壳中丰度位居第4的元素,但它在海水中的浓度却很低,浓度一般为0.05~2.0 nmd/dm^3[1]。近年来,国内外的海洋科学家在进行海洋生态系统初级生产力、碳循环等重要生态过程及其对全球气候变化影响的研究中发现,海洋中的铁对浮游植物的生长、初级生产力的水平有着十分重要的影响甚至成为了“限制性因子”,在多个“高营养盐、低叶绿素(HNLC)”海区所实施的富铁实验的结果很好地印证了铁元素在海洋生态系统中的重要作用^[2]。最新的研究成果表明近岸海水中的铁可能对浮游植物的种类组成起到决定性的作用,进而对包括氮、磷、硅在内的其他元素的生物地球化学行为产生深远的影响^[3]。
- 铁 /
- 伏安极谱法 /
- 液芯波导光纤法 /
- 海水
- iron /
- voltammetry /
- liquid wave-guide capillary cell /
- seawater

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参考文献(13)

WU Jing-feng,BOYLE E A.Determination of iron in seawater by high-resolution isotope dilution inductively coupled plasma mass spec-trometry after Mg(OH)z coprecipitation[J].Analytica Chimica Acta,1998,367:183-191.

MARTIN J H,FITZWATER S E,GORDON M.Iron deficiency limits phytoplankton growth in Antarctic waters[J].Global Biogeo-chem Cycl,1990,4:5-12.

HUTCHINS D A,DITULLIO G R,ZHANG Y,et al.An iron limitation mosaic in the California upwelling regime[J].Limnol Ocean-org,1998,43(6):1037-1054.

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GELADO-CABALLERO M D,HERNANDEZ-BRITO J J,et al.Fast adsorptive stripping voltammetry of iron in oxygenated seawater[J].Electroanalysis,1996,8:1065-1071.

GLEDHILL M,van den BERG C M G.Determination of complexation of iron(m)with natural organic complexing ligands in seawater u-sing cathodic stripping vohammetry[J].Marine Chemistry,1994,47:41-54.

CROOT P L,JOHANSSON M.Determination of iron speciation by cathodic stripping vohammetry in seawater using the competing lig-and 2-(2-thiasolyalso)-p-cresol(TAC)[J].Electroanalysis,2002,12(8):565-576.

胡勇胜,陈文,徐庆.新型光学纤维材料的研究[J].材料报道,2000,14(10):64-65.

LI Q P,ZHANG J Z,MILLERO F J,et al.Continuous colorimetric determination of trace ammonium in seawater with a long-path liq-uid waveguide capillary cell[J].Marine Chemistry,2005,96:73-85.

WU Jing-feng,BOYLE E A,SUNDA W,et al.Soluble and colloidal iron in oligotrophic Oceans[J].Sdence,2001,293:847-849.

FLORANCE T M,JOHNSON D A,BATLEYEY G E.Polarography of heterocychc azo compounds and their metal complexes[J].Journal of Electroanalytical Chemistry and Interracial Electrochemistry,1974,50:113-127.

JOHNSON K S,VIRGINIA Elord,STEVE Fitzwater,et al.Developing standards for dissolved iron in seawater[J].EOS,2007,88(11):131-133.

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