Tungsten- and cobalt-dominated heavy metal contamination of mangrove sediments in Shenzhen, China

Su, Xu; Lin, Cheng‐Fang; Qiu, Penghua; Song, Yan; Yang, Wenhuai; Xu, Guanchang; Xiaodan, Feng; Yang, Qian; Yang, Xiu Qin; Niu, Anyi

doi:10.1016/j.marpolbul.2015.08.031

Cited by 33 publications

(12 citation statements)

References 20 publications

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“…Therefore, the performance of different reagents was compared using near neutral final pH (5)(6)(7) and Co extraction efficiency >50%, as target values. Under these conditions, overlaid contour plots were constructed for Na 2 EDTA and CA (Figure 4a and b).…”

Section: Evaluation Of the Effects Of Factors By Box-behnken Designmentioning

confidence: 99%

“…In numerous studies, Co concentrations in soil and sediments were measured to define its levels and identify the main pollution sources. Soil pollution by Co in Shenzhen soil (China) was attributed to uncontrolled discharge of industrial wastewater from factories that produce or use chemical compounds or alloys containing Co [7]. Furthermore, ceramic industry was highlighted as the source of the sediment contamination with Co and other heavy metals in Jiangsu Province (China) [8].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Factors Affecting Chemical Extraction of Co Ions from Contaminated Soil

Smičiklas¹

2018

Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes

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Excessive concentrations of cobalt (Co) ions in the soil cause quality degradation and pose a significant hazard to biota. One of the options for the permanent separation of the pollutant from soil matrix is extraction by chemical reagents. In this study, responsesurface methodology (RSM) was applied to evaluate the factors affecting Co extraction from contaminated calcareous soil. Solutions of disodium ethylenediaminetetraacetate (Na 2 EDTA), citric acid (CA), and HCl were considered as leaching media. Reagent concentration, soil to solution ratio, and extraction time were selected as process variable, while Co extraction efficiencies and final pH values of extracts were the measured responses. The effect of factor variation between three levels was studied using Box-Behnken experimental design. By statistical analysis, the most influential factors were determined for each reagent, and the model equations were proposed for the prediction of system responses. Overlaid contour plots were used for the analysis of the effect of process conditions on both responses simultaneously. Given that each case of contamination is unique and requires extensive research before the remediation is implemented full-scale, it was shown that experimental design methodology is a smart approach for the assessment and comparison between the treatments.

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Section: Evaluation Of the Effects Of Factors By Box-behnken Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Factors Affecting Chemical Extraction of Co Ions from Contaminated Soil

Smičiklas¹

2018

Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes

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“…Hal ini dapat disebabkan oleh bahan organik sedimen pada lokasi 2 lebih tinggi dibandingkan lokasi 2. Hubungan positif antara kandungan bahan organik pada sedimen dengan konsentrasi logam pada sedimen [15]. Keberadaan logam Pb sangat dipengaruhi oleh bahan organik [3].…”

Section: Metode Penelitianunclassified

Geochemical Fraction Profile of Metal Cd, Pb and Zn on Sediments of Sidoarjo Mud Reclamation Area at Porong Sidoarjo Estuary

Setiadi

Rumhayati

Retnaningdyah

2017

Nat-B

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“…Since such characteristics of PF gels have already been demonstrated [23], here only PZ gel was studied. As W contaminated sediment/soil are commonly also enriched in other trace elements (see Table S2; [11]), the improved capacity of the PZ gel over that of the PF confers some practical advantages for the measurements. Two deoxygenated PZ DGT probes, one without diffusive gel and the other with AgI as the diffusive gel (both containing filter membranes) were inserted across the sedimentwater interface (SWI) of two sediment cores (A and B) collected from Meiliang Bay, Lake Taihu, China.…”

Section: Pz Dgt Measurement In Sedimentmentioning

confidence: 99%

“…In 2010, 85% of the 61,000 t of W that were produced worldwide that year came from within Chinese borders [10], with the mineral extraction activities concentrated in the south-eastern provinces of Jiangxi and Guangdong. The pollution legacy caused by W enrichment in some of these mining districts is severe [10,11]. However, it's not just the manufacturing processes that are a cause of concern, leachates from E-waste repositories and recycling sites can also contain considerable amounts of W [12].…”

Section: Introductionmentioning

confidence: 99%

High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

Guan

et al. 2016

Journal of Hazardous Materials

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This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited. General rightsCopyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. high-resolution W profiling across sedimentwater and hotspotbulk media interfaces from Lake Taihu was obtained using PZ DGT coupled with laser ablation ICPMS measurement, and the apparent diffusion fluxes across the interfaces were calculated using a numerical model. KEY WORDS: diffusive gradients in thin-films (DGT); tungsten; precipitated zirconia (PZ) gel; sub-mm high resolution; hotspotbulk media interface.

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Tungsten- and cobalt-dominated heavy metal contamination of mangrove sediments in Shenzhen, China

Cited by 33 publications

References 20 publications

Evaluation of Factors Affecting Chemical Extraction of Co Ions from Contaminated Soil

Evaluation of Factors Affecting Chemical Extraction of Co Ions from Contaminated Soil

Geochemical Fraction Profile of Metal Cd, Pb and Zn on Sediments of Sidoarjo Mud Reclamation Area at Porong Sidoarjo Estuary

High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

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