克罗地亚Krka河上游有机物组分的伏安法研究

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Croatica Chemica Acta Pub Date : 2018-12-30 DOI:10.5562/CCA3443

Slađana Strmečki, I. Ciglenečki, M. G. Udovič, M. Marguš, E. bura-Nakić, J. Dautović, M. Plavšić

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引用次数: 4

摘要

有机质（OM）含量的增加伴随着缺氧/缺氧的发展和硫物种的出现是天然水体富营养化的指标。为了预测生物地球化学和生态变化，在2011年和2012年1月使用伏安法研究了布尔詹湖（克罗地亚喀斯特Krka河；B站和B2站下游）的特定OM成分。2011年5月（B）和11月（B2）地表水层中的表面活性物质（当量0.018至0.150 mg dm-3 Triton-X-100）和Cu络合容量（54至680 nmol dm-3）显示出最高值，与最高的溶解（0.505至1.530 mg C dm-3）和颗粒（0.051至0.725 mg C dm3）有机碳和浮游植物生物量有关。在研究期间，本地产生的OM不会引起缺氧/缺氧。Brljan的湖水可以被描述为贫营养的，根据季节和Krka河的水情，OM浓度偶尔会升高。

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Voltammetric study of organic matter components in the upper reach of the Krka River, Croatia

The increased amount of organic matter (OM) accompanied with the development of hypoxia/anoxia and appearance of the sulphur species are indicators of eutrophication in natural waters. To predict biogeochemical and ecological changes, specific OM components in the Lake Brljan (the karst Krka River, Croatia ; station B and station B2 downstream) were studied during 2011 and in January 2012 using voltammetry. Surface‒active substances (eq. 0.018 to 0.150 mg dm-3 Triton‒X‒100) and Cu complexing capacity (54‒680 nmol dm-3) showed the highest values in surface water layer in May 2011 (B) and in November 2011 (B2), associated with the highest dissolved (0.505‒ 1.530 mg C dm-3) and particulate (0.051‒0.725 mg C dm-3) organic carbon and phytoplankton biomass. Autochthonously produced OM did not cause hypoxia/anoxia during the investigated period. Brljan's lake water could be characterised as oligotrophic with occasionally elevated OM concentration depending on season and Krka River water regime.

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来源期刊

Croatica Chemica Acta 化学-化学综合

CiteScore

0.60

自引率

0.00%

发文量

审稿时长

18 months

期刊介绍： Croatica Chemica Acta (Croat. Chem. Acta, CCA), is an international journal of the Croatian Chemical Society publishing scientific articles of general interest to chemistry.