浙江西沪港重金属铜的配位容量和形态分析

吕海燕; 王正方; 傅和芳; 冯旭文

浙江西沪港重金属铜的配位容量和形态分析

国家海洋局, 第二海洋研究所, 杭州, 浙江, 310012

基金项目: 国家自然科学基金(40076025);浙江省自然科学基金(499021)

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出版历程
- 收稿日期: 2001-08-14
- 修回日期: 2001-12-24

Investigation of heavy metal copper complexing capacity and forms in the Xihu Harbour of Zhejiang, China

Second Institute Oceanography, State Oceanic Administration, Hangzhou 310012, China

摘要

摘要: 根据2000年6月10～14日在浙江省西沪港采集的海水样品,利用AA-800石墨炉原子吸收分光光度技术和阳极溶出伏安法测定样品中重金属铜的含量,获得铜在海水中受不同的有机配体控制.不同粒级的铜表观配位容量表明西沪港海水过孔径1.00μm微孔膜的(ACuCC)较高,为144.4nmol/dm³;过0.40和0.20μm滤膜的(ACuCC)分别为103.0和102nmol/dm³;铜的有机配体条件稳定常数的对数值在7.25～9.14之间.铜的总量为21.72nmol/dm³.铜全部为稳定溶解态,其中pH2酸溶态占95.0%,强有机结合态占5.0%.溶解态铜中有机结合态占过滤海水中总铜的61.6%.
- 铜 /
- 配位容量 /
- 条件稳定常数 /
- 有机配体
Abstract: Based on the seawater samples collected from the Xihu Harbour of Zhejiang,China on June 10-14,2000,AA-800 graphite furnace atomic absorption spectrophotometer(AAS) and anodic stripping voltammetry(ASV) were used to determine the content of heavy metal copper in the samples and acquire that copper in seawater is controlled by different organic complexes.Compared with different particle sizes(1.00,0.40,0.20 pm),the apparent copper complexation capacity(ACuCC) is respectively 144.4,103.0 and 102.0 nmol/dm³;the conditional stability constants logarithm of copper organic ligand is respectively 9.14,8.66 and 7.25.Total nipper(21.72 nmol/dm³)in the Xihu Harbour is higher.Copper all is steady dissolved,including pH2 acid dissolved nipper 95.0% and organic high complexing copper 5.0%.Dissolved organic complexing copper accounts for 61.6% of total copper in filtered seawater.
- copper /
- complexing capacity /
- conditional stability constant /
- organic ligand

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参考文献(18)

GABRIELE C,KENNETH H C,KENNETH W B.Lead speciation in Surface Waters of the eastern North Pacific [J].Marine Chemistry,1990,29:221-233.

张首临,李泽林.东海——图门江水中Zn,Cd,Pb,Cu的形式分析[J].海洋与湖沼,1993,24(6):609-614.

顾宏堪.河口水Cu²⁺,Zn²⁺的分析、形式、分布、毒性与生态环境[J].海洋与湖沼,1996,27(3):336-339.

王正方.长江口海域铜的地球化学初步讨论[J].地球化学,1993,1:90-96.

王正方,周蓬霞,卢勇,等.日本以南海域铜和铅的含量分布[A].黑潮调查论文集(一)[C].北京:海洋出版社,1990.419-425.

陈春华,王正方,吕海燕.海口湾海水重金属的行为特征[J].海洋学报,1999,21(1):41-47.

MACKEY D J,O'SULLIVAN J E,WATSON R J,et al.Interference effects in the extraction of trace metals from estuarine waters [J].Marine Chemistry,1997,59:113-126.

邵秘华,王正方.长江口海域悬浮颗粒物中Cu,Pb,Cd的化学形态及分布特征研究[J].海洋与湖沼,1992,23(2):144-149.

DONAT J R,BRULAND K W.SALBU,B STEINNES E.Trace Elements in Natural Waters [M].Boca Raton,FI:CRC Press,1995.

WELLS L Mark.Marine colloids:a neglected dimension [J].Nature 5,1998,391:530-531.

WEN Liang-saw,SANTSCHI PETER,GILL GRAY,et al.Estuarine trace metal distributions in Galveston Bay:importance of colloidal forms in the speciation of the dissolved phase [J].Marine Chemistry,1999,63:185-212.

TAKASHI M,EIICHIRO T,YUKIO S.Determination of complexing ability of natural ligands in seawater for various metal ions using ion selective electrodes [J].Analytical Chemistry,1990,62(17):1 737-1 746.

MICHIEL R L,ECKARD H,GERHARD K.Continuous transects of cadmium,copper,and aluminium in surface waters of the Atlantic Ocean,50°N to 50°S:correspondence and contrast with nutrient-like behaviour [J].Geochimica et Cosmochimica Acta,1997,61(1):47-61.

PETER B K,KENNETH W B.Chemical speciation of dissolved Cu,Zn,Cd,Pb in Narragansett Bay,Rhode Island [J].Marine Chemistry,1998,60:267-282.

赵卫红,张正斌,王江涛.黄河、长江、钱塘江水样中胶体对铅吸附络合容量的影响[J].青岛海洋大学学报,1999,10(增刊):96-102.

GACHTER R,DAVIS J S,MARéS A.Regulation of copper availability to phytoplankton by macromolecules in lake water [J].Environ Sci Technol,1978,12:1 416-1 421.

陈春华.海口湾海水表观重金属络合容量研究[J].海洋学报,1997,19(5):69-75.

SUNDA W,TUILARD R R L.The relationship between cupris ion activity and the toxicity of copper to phytoplankton [J].J Mar Res,1976,(34):511-529.

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