Seasonal changes of arsenic speciation in lake waters in relation to eutrophication

Hasegawa, Hiroshi; Rahman, Mohammad Azizur; Kitahara, Kitoshi; Itaya, Yasuo; Maki, Teruya; Ueda, Kazuyuki

doi:10.1016/j.scitotenv.2009.11.062

Cited by 78 publications

(37 citation statements)

References 41 publications

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“…A significant seasonal variation was observed in the As concentrations of Lake Taihu (Table 1), where both the total and dissolved As were higher in summer than in winter. These trends in As occurrence and distribution in lake waters have also been previously reported (Hasegawa et al 2009(Hasegawa et al , 2010Barringer et al 2011). In the summer, As was released to the bottom water layer from sediments under anaerobic conditions.…”

Section: Discussionsupporting

confidence: 85%

“…Since PO 4 and As(V) have similar chemical properties, phytoplankton might competitively intake As(V) in addition to phosphate (Hasegawa et al 2010). Therefore, biological activities, such as growth, density, and reproduction of phytoplankton and other aquatic organisms, can likely influence variations in As occurrence (Rahman and Hasegawa 2012).…”

Section: Introductionmentioning

confidence: 99%

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Distribution of arsenic between the particulate and aqueous phases in surface water from three freshwater lakes in China

Yang

Geng

Wei

et al. 2015

Environ Sci Pollut Res

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Total arsenic (As) in suspended particulate matter (SPM) of lacustrine ecosystems has been extensively documented, but knowledge on the distribution of As between the particle and aqueous phases in freshwater lakes remains largely unknown. The present study employed a rapid method to determine the total and dissolved As and As in SPM at sites covering the entire areas of three large shallow lakes in China, e.g., Taihu, Chaohu, and Dianchi, to obtain a Brepresentativem ean value of the As concentration in various phases. The average concentrations of total and dissolved As were below 6.0 and 3.3 μg/L, respectively. Arsenic in SPM was much higher than that in waters, as ranging from 24.7 to 516 μg/g. Lake Taihu exhibited extensive seasonal variation both in total and dissolved As, while little difference was observed in SPM concentration, with an average value of 54.2 and 49.3 mg/L in winter and summer, respectively. Among the algae in the three lakes, Cyanophyta dominated in both cell abundance and biomass. Algae mass occupied significant parts of SPM, especially in Dianchi; the proportions of algae in the SPM fractions were measured as 10.4 and 7.1 % in Taihu in winter and summer, 4.5 % in Chaohu, and 53.3 % in Dianchi, both in summer season. The total As in SPM had a significant positive relationship with total As in water and a high distribution coefficient (Kd) between SPM and dissolved fraction of As at all three lakes. The high proportions of Algae, especially Cyanophyta in the composition of SPM in the three large shallow lakes, might play an important role in affecting the As distribution between the aqueous and particulate phases in aquatic ecosystem.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Distribution of arsenic between the particulate and aqueous phases in surface water from three freshwater lakes in China

Yang

Geng

Wei

et al. 2015

Environ Sci Pollut Res

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“…Seasonal changes of nitrogen, phosphorus, and arsenic were found in such lakes with thermal stratification. Usually these lakes had an average depth greater than 7 m, which is much greater than that in Taihu [34]. In this study, however, stratification in Taihu was not seen ( Table 2), which is in agreement with the previous reports in Taihu, mainly due to its much less depth (1-3 m) [26,27].…”

Section: Resultssupporting

confidence: 92%

“…The arsenic contents in 0910 and 1005 samples were much lower than those in 0905, with only one-tenth of arsenic contents detected as in 0905 samples. Stratification occurred normally in most lakes, as seen with great differences in water temperatures between upper and lower parts of the water column [32][33][34][35]. Seasonal changes of nitrogen, phosphorus, and arsenic were found in such lakes with thermal stratification.…”

Section: Resultsmentioning

confidence: 98%

The Fluctuation of Arsenic Levels in Lake Taihu

Wei

Zhang

Yang

2011

Biol Trace Elem Res

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“…Sediment plays a major role in the transportation and transformation of nutrients in freshwater ecosystems (Wang et al 2003;Hasegawa et al 2010;Chong et al 2012;Lu et al 2012;Antunes et al 2013). Nutrients which accumulate in sediment can exchange with the overlying water via interstitial water through mechanisms such as physical attraction, chemical adsorption, and cation bridging (Hua et al 2007;Rex and Petticrew 2010;Jiang et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen distribution and ammonia release from the overlying water and sediments of Poyang Lake, China

et al. 2015

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Poyang Lake is the largest freshwater lake in China and is one of the two largest lakes connected with the Yangtze River. It is an overflow lake which absorbs and releases water seasonally. To evaluate the geochemical cycling of nitrogen (N) in Poyang Lake, the spatial distributions of ammonia nitrogen (NH 4 ? -N), nitrate nitrogen (NO 3 --N) and total nitrogen (TN) in sediments and overlying water were measured. The experimental results showed that the average concentrations of TN in the sediment samples, surface water, and bottom water samples from Poyang Lake were 1,107.375 mg kg -1 , 1.998 and 2.237 mg L -1 , respectively. The highest concentrations of TN were measured in the water and sediment obtained from the river tail region south of Poyang Lake, with decreasing pattern from south to north affected by the river input. The contribution of TN to the internal load played an important role on N distribution in the overlying water. The vertical distribution of TN in sediment cores of Poyang Lake showed a decreasing trend with depth. The NH 4 ? -N content in sediment cores initially decreased with depth and then increased slowly. The NO 3 --N content in sediment cores exhibited an inverse trend compared with that of NH 4 ? -N due to the influence of nitrification and denitrification processes. Release kinetic experiments of NH 4? -N demonstrated that the maximum NH 4 ? -N release rate occurred within first 5 min and reached 90-94 % of the maximum value within 0-10 min.

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Seasonal changes of arsenic speciation in lake waters in relation to eutrophication

Cited by 78 publications

References 41 publications

Distribution of arsenic between the particulate and aqueous phases in surface water from three freshwater lakes in China

Distribution of arsenic between the particulate and aqueous phases in surface water from three freshwater lakes in China

The Fluctuation of Arsenic Levels in Lake Taihu

Nitrogen distribution and ammonia release from the overlying water and sediments of Poyang Lake, China

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