Chromophoric dissolved organic matter of black waters in a highly eutrophic Chinese lake: Freshly produced from algal scums?

Zhou, Yongqiang; Jeppesen, Erik; Zhang, Yunlin; Niu, Cheng; Shi, Kun; Liu, Xiaohan; Zhu, Guangwei; Qin, Boqiang

doi:10.1016/j.jhazmat.2015.06.024

Cited by 76 publications

(25 citation statements)

References 51 publications

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“…A comparative study indicated that terrestrially derived CDOM had lower S R [58] and that algal degradation increased S R [59]. Because the cyanobacterial bloom in LLT caused the increase in S R in Tin, this resulted in a positive correlation between a(350) and S R in LLT, but a negative correlation in LLH (Figure 3b), these results were consistent with the previous study of Zhou, et al [60]. In addition, significant positive correlations were found between Chla and a(350) in LLT, which was also reported by Zhang et al [53] and Zhou et al [60] in Lake Taihu, but not in LLH (Figure 3a).…”

Section: Differences In Sources Of Fdom Components In Llt and Llhsupporting

confidence: 89%

Characterization of Chromophoric Dissolved Organic Matter in the Littoral Zones of Eutrophic Lakes Taihu and Hongze during the Algal Bloom Season

Chen

Huang

et al. 2018

Water

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Chromophoric dissolved organic matter (CDOM) is a key component with a critical role in the littoral zones of eutrophic shallow lakes; yet the characteristics of CDOM in these zones remain seldom systematically reported. In this study, the differences in sources, biogeochemical characteristics, and fates of CDOM between the littoral zones of eutrophic lakes Taihu (LLT; frequently occurring algal blooms and longer lake residence time) and Hongze (LLH; no obvious algal blooms and shorter residence time) were compared during the algal bloom season using ultraviolet-visible spectra and excitation and emission matrix spectroscopy combined with parallel factor analysis. Three humic-like fluorescent dissolved organic matter (FDOM) components (C1, C3, and C4) and one protein-like component (C2) were identified. Results showed that FDOM components were dominated by protein-like fluorescent substances in LLT, and humic-like materials in LLH, respectively. The CDOM in LLT had a lower relative aromaticity and molecular weight, humification degree and a higher autotrophic productivity because of algal blooms. Furthermore, CDOM depletion rates in LLT were higher than those in LLH due to a longer lake residence time in LLT. In addition, CDOM shifted from high molecular weight to low molecular weight as the humification degree decreased during the CDOM depletion process. This comparative study showed that algal blooms and lake residence time were the significant factors for distinguishing characteristics of CDOM between littoral zones of shallow lakes on a similar trophic level. This study provides field-based knowledge for remote sensing CDOM measurement and serves as a reference for lakeshore aquatic environmental management.

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Section: Differences In Sources Of Fdom Components In Llt and Llhsupporting

confidence: 89%

Characterization of Chromophoric Dissolved Organic Matter in the Littoral Zones of Eutrophic Lakes Taihu and Hongze during the Algal Bloom Season

Chen

Huang

et al. 2018

Water

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“…Generally, peak T indicates the microbial activity in the water system, while peak C relates to microbially reprocessed DOM (Hudson et al, 2007). Protein-like and humic-like components were reported in previous studies on algal and phytoplankton cultures (Ferrari and Mingazzini, 1995;Fukuzaki et al, 2014;Korak et al, 2015; Liberzon et al, 2016;Nguyen et al, 2005;Rochelle-Newall and Fisher, 2002;Zhou et al, 2015). In particular, high protein-like fluorescence is generated by cyanobacteria (Korak et al, 2015), Cryptophyta, and diatom cultures (Fukuzaki et al, 2014).…”

Section: Resultsmentioning

confidence: 83%

“…Considering that BIX and HIX use different regions within the EEM, the two parameters investigate different fractions of DOM, which could explain the different results. In addition, Zhou et al (2015) found that the protein-like fraction could have a secondary source of algal scums. These finding are also supported by the work of Rochelle-Newall and Fisher (2002) regarding DOM as not being directly derived from phytoplankton.…”

Section: Resultsmentioning

confidence: 99%

Seasonal Variation of Eutrophication in Some Lakes of Danube Delta Biosphere Reserve

Liliana

Tőrök

Cârstea

et al. 2017

Water Environment Research

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To understand the trophic state of lakes, this study aims to determine the dynamics of phytoplankton assemblages and the main factors that influence their seasonal variation. Sampling campaigns were carried out in three lakes from the Danube Delta Biosphere Reserve. Spectral analysis of specific phytoplankton pigments was applied as a diagnostic marker to establish the distribution and composition of phytoplankton taxonomic groups. Fluorescence spectroscopy was used to quantify changes in dissolved organic matter (DOM). The relative contribution of the main phytoplankton groups to the total phytoplankton biomass and the trend of development during succession of the seasons showed that cyanobacteria could raise potential ecological or human health problems. Moreover, fluorescence spectroscopy revealed that Cryptophyta and cyanobacteria were the main contributors to the protein-like components of DOM. It was concluded that fluorescence could be used to provide a qualitative evaluation of the eutrophication degree in Danube Delta lakes.

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“…Also, DOM is an important concern related to drinking water treatment because it produces adverse aesthetic qualities such as discoloration, bad taste, and odor [6]. Moreover, it adversely affects the performance of water treatment processes such as granular activated carbon filtration and membrane filtration.…”

Section: Introductionmentioning

confidence: 99%

Characterizing Dissolved Organic Matter from Cattle Slurry in Kushiro River Water Using EEM-PARAFAC

Suzuki

Ishii

Kose

et al. 2016

J. of Wat. & Envir. Tech.

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We applied excitation emission matrix-parallel factor analysis (EEM-PARAFAC) technique to ascertain the fluorophore group indicating fecal pollution from the complex nature of dissolved organic matter (DOM) in surface water of Kushiro River Basin. Covariation between relative concentrations of identified fluorophore groups and specific steroid profiles were analyzed to produce an alternate classical steroid indicator of fecal pollution by the identified fluorophore group. The fluorophore, showing fluorescent characteristics similar to those of the indole ring structure of tryptophan, was found from cattle slurry. The maximum fluorescence intensities (F max ) of the fluorophore showed seasonal and spatial distribution similar to that of coprostanol (5β), which is known as indicator of fecal pollution. The fluorophore was widely detected in surface water of Kushiro River Basin collected from autumn through the following spring, after application of cattle slurry to pastureland. In this case, F max of the fluorophore showed good correlation with 5β, while during fall through spring, it is useful similar to 5β. Composition of 5β in fecal sterols is specific to the type of domestic animal. Correlation between 5β and F max of the fluorophore holds only in a basin that has the DOM sources of breeding beef and dairy cattle such as Kushiro River Basin.

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Chromophoric dissolved organic matter of black waters in a highly eutrophic Chinese lake: Freshly produced from algal scums?

Cited by 76 publications

References 51 publications

Characterization of Chromophoric Dissolved Organic Matter in the Littoral Zones of Eutrophic Lakes Taihu and Hongze during the Algal Bloom Season

Characterization of Chromophoric Dissolved Organic Matter in the Littoral Zones of Eutrophic Lakes Taihu and Hongze during the Algal Bloom Season

Seasonal Variation of Eutrophication in Some Lakes of Danube Delta Biosphere Reserve

Characterizing Dissolved Organic Matter from Cattle Slurry in Kushiro River Water Using EEM-PARAFAC

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