Abstract:
:External shell surface (ESS) of bivalve mollusks is known to adsorb various metals dissolved in ambient water in high concentration. It is hypothesized here that the surface microtopography of the thin organic coating layer, periostracum, or calcareous shell (if periostracum was destroyed) plays a major role in the adsorption of actinides on ESS. Thorium (natural alpha-emitter) was used in short-term biosorption experiment with shell fragments of five bivalve mollusks. After a 72 h exposure to Th (~6 kBq L(-1)), thorium concentration was measured on ESS using laser ablation inductively coupled plasma mass spectrometry; the distribution and density of alpha tracks were subsequently visualized by α-track autoradiography. A trend in reduced Th concentrations on the ESS was observed depending upon the species tested: (group 1 ~4000 μg g(-1)) Chlamys islandica (M.), Mercenaria mercenaria (L.), Dreissena polymorpha (P.)>(group 2 ~1200 μg g(-1)) Crassostrea virginica (G.)≫(group 3 ~150 μg g(-1)) Mytilus edulis L. The microtopography of ESS was characterized by scanning electron microscopy revealing the high porosity of the calcareous surface of C. islandica and M. mercenaria, lamellate surface of periostracum in D. polymorpha, uneven but a weakly porous surface of periostracum of C. virginica, and a nearly smooth surface of the periostracum of M. edulis. This work has demonstrated, for the first time, the presence of a strong correlation between concentration of adsorbed Th and ESS microtopography, and the role of the periostracum in this process is discussed.
journal_name
Chemospherejournal_title
Chemosphereauthors
Zuykov M,Pelletier E,Saint-Louis R,Checa A,Demers Sdoi
10.1016/j.chemosphere.2011.11.023subject
Has Abstractpub_date
2012-02-01 00:00:00pages
680-3issue
6eissn
0045-6535issn
1879-1298pii
S0045-6535(11)01315-4journal_volume
86pub_type
杂志文章相关文献
CHEMOSPHERE文献大全abstract::Food contamination with cadmium (Cd) is a serious health threat to humans worldwide and Cd accumulation by rice is a major source of Cd entrance to the food chain. Silicon (Si) application decreases the Cd content in rice but the timing of Si application may need further investigation. The present study investigated t...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2019.03.182
更新日期:2019-07-01 00:00:00
abstract::The design of sustainable, effective and recyclable hybrid catalysts for advanced oxidation processes is highly significant for remediation of the water environment. In this study, we synthesized magnetic Fe3O4-N-doped carbon sphere composite catalysts (Fe3O4-NCS-x) for efficient removal of tetracycline by activating ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.128011
更新日期:2021-01-01 00:00:00
abstract::Polycyclic aromatic hydrocarbons (PAHs) can induce skin toxicity. Although some investigations have been conducted to assess the skin toxicity of different PAHs, few comparisons using a series of PAHs with different ring numbers and arrangements have been done. We aimed to explore the skin absorption of 6 PAH compound...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.126955
更新日期:2020-09-01 00:00:00
abstract::Airstreams polluted with H(2)S at inlet loads ranging from 2.4 to 40.9 g H(2)Sm(-3)h(-1) were treated in a biotrickling reactor packed with hematite bearing, open pore foam units, at Empty Bed Residence Times (EBRT) ranging from 20 to 60s over a period of 80 d, with almost complete removal of the pollutant from the st...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2008.07.048
更新日期:2008-11-01 00:00:00
abstract::In the current study the dynamics of glucocorticoid uptake by zebrafish chorionated embryos from the surrounding medium were studied, using 2.5 μM cortisol or dexamethasone solutions complemented with their tritiated variant. We measured the uptake of radioactive cortisol by embryos during a 1 h submersion. Interestin...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2017.05.059
更新日期:2017-09-01 00:00:00
abstract::In this report, the adsorption of Cr(VI) onto MnO2/CS nanocomposite material from aqueous solution is investigated. All the factors, which affect the adsorption, such as pH, adsorption time, Cr(VI) initial concentration and adsorbent dosage, are also examined. The results obtained show that the Cr(VI) uptake is strong...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.127147
更新日期:2020-10-01 00:00:00
abstract::Adsorption is recognized as one of the most efficient approaches for antibiotics removal from water. Inspired by the enzyme-substrate interaction model, we proposed induced-fit adsorption (IFA) model, and rationally designed and fabricated diol-based porous organic polymers (POPs) as adsorbents for tetracycline (TC) r...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2018.09.003
更新日期:2018-12-01 00:00:00
abstract::Biological technologies are efficient and economical methods for removing toxic arsenic (As) from organic wastewaters. In this study, four sequencing batch reactors of manganese-oxidizing aerobic granular sludge (Mn-AGS) were operated in duplicate and imposed with acidic pH and high organic shocks. Batch experiments w...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.127621
更新日期:2020-12-01 00:00:00
abstract::In late 1990s, USEPA/FDA made an important connection regarding the presence of elevated levels of dioxins (e.g., 1500 ng kg(-1) TEQ) in ball clays mined in Mississippi (USA) from a geological deposit dated to ~40 million years (Mississippi Embayment) that stretches over several states (northern part of Mississippi to...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2012.03.057
更新日期:2012-07-01 00:00:00
abstract::We investigated anaerobic degradation rates for three phthalate esters (PAEs), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), and di-(2-ethylhexyl) phthalate (DEHP), from river sediment in Taiwan. The respective anaerobic degradation rate constants for DEP, DBP, and DEHP were observed as 0.045, 0.074, and 0.027 ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2004.11.031
更新日期:2005-03-01 00:00:00
abstract::This study investigated the possible effects of a commonly used foliar herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) formulation on medulla spinalis of lebistes. Fish were exposed to 2,4-D (15, 30, 45 mg L(-1)), behavioral changes were monitored. Fish were fixed, histopathological examination was carried out on sec...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2009.06.018
更新日期:2009-09-01 00:00:00
abstract::The effect of dissolved humic acid (HA) on two types of hydrolysis reactions was investigated: (I) dehydrochlorination of gamma-hexachlorocyclohexane (HCH) and 1,1,2,2-tetrachloroethane (TeCA) as a reaction involving hydroxide ions (OH(-)) and (II) hydrolysis of 1-octyl acetate (OA) which is catalyzed by H(+) at the a...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2007.12.001
更新日期:2008-04-01 00:00:00
abstract::Untreated pharmaceutical pollution and their possibly toxic metabolites, resulting from overloaded wastewater treatment processes, end up in aquatic environments and are hazardous to the ecosystem homeostasis. Biological wastewater remediation could supplement traditional methods and overcome the release of these biol...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.128117
更新日期:2021-01-01 00:00:00
abstract::Maternal exposure to polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) may result in adverse health effects in their children. In Japan in 1968, an accidental human exposure to rice oil contaminated with PCDDs, PCDFs, and PCBs, led to the development...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2012.08.024
更新日期:2013-02-01 00:00:00
abstract::In this study, WO3 nanostructures were synthesized by the electrochemical anodization technique to use them on the degradation of persistent organic compounds such as the pesticide fenamiphos. The acids electrolyte used during the anodization were two different: 1.5 M H2SO4 - 0.05 M H2O2 and 1.5 M CH4O3S - 0.05 M H2O2...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2019.125677
更新日期:2020-05-01 00:00:00
abstract::The purpose of this study was to test the efficiency of passive solid samplers, polyoxymethylene (POM) strips and polydimethylsiloxane (PDMS) silicon tubing, to predict the bioavailability of native PAHs in contaminated sediments. Results were compared with worm bioaccumulation data and solid/liquid extraction using t...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2007.12.015
更新日期:2008-04-01 00:00:00
abstract::Congener specific 2,3,7,8-chlorinated PCDDs and PCDFs were determined in skin biopsies taken from sea lions (Otaria flavescens) living in two areas of the South-western Atlantic on the coast of Argentina (Mar del Plata and Punta Bermeja). This is the first report on PCDDs and PCDFs in sea lion skin biopsies from the s...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/s0045-6535(98)00199-4
更新日期:1999-02-01 00:00:00
abstract::The purpose of this study was to identify a relationship between changes of bacterial counts and bisphenol A (BPA) degradation in seawater under aerobic or anaerobic conditions, and at temperatures of 4, 25, and 35 degrees C. Water samples (seawater and river water) spiked with 1000 ng/ml of BPA was placed for 60 d. T...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2005.01.058
更新日期:2005-09-01 00:00:00
abstract::The widespread use of tetrabromobisphenol A (TBBPA) in industries has resulted in its frequent detection in environmental matrices, and the mechanisms of its associated hazards need further investigation. In this study, the nematode Caenorhabditis elegans (C. elegans) was exposed to environmentally relevant concentrat...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2019.125078
更新日期:2020-03-01 00:00:00
abstract::The fate of spiked anthracene, pyrene and benzo[a]pyrene in soil with or without sewage sludge compost was assessed during a 6-month bioremediation process simulating landfarming. Bioassays and physico-chemical analyses were employed to monitor toxicity change in soil samples and elutriates through ten sampling campai...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2006.03.065
更新日期:2006-11-01 00:00:00
abstract::Supercritical water oxidation (SCWO) of 2-, 3- and 4-nitroaniline (NA) was investigated under residence time of 1-6 min, pressure of 18-26 MPa, temperature of 350-500 °C, with initial concentration of 1 mM and 300% excess oxygen. Among these operating conditions, temperature and residence time played a more significan...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2018.04.029
更新日期:2018-08-01 00:00:00
abstract::We have developed a method for the analysis of two sewage-derived contaminants: triclosan (TCS), an antibacterial agent, and methyl triclosan (MTCS), a TCS metabolite. For solid samples (4 g), extraction and cleanup were integrated into the same step using pressurized liquid extraction (PLE) with in-cell-clean-up (1g ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2013.09.101
更新日期:2014-01-01 00:00:00
abstract::In the present work we performed a comparative study on the adsorption of the surfactants sodium dodecyl sulphate (SDS) (anionic), and octylphenoxypolyethoxyethanol (Triton X-100) (non-ionic) to 18 soils with organic matter (OM) and clay fraction contents varying over a broad range. The objective of the study was to g...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2005.03.016
更新日期:2005-09-01 00:00:00
abstract::Chemosensors have attracted increasing attention for their usefulness on-site detection and monitoring. In this study, we elucidated a novel, facile, and highly selective Chemo-Paper-Sensor (CPS) for detection and monitoring of strontium (Sr(2+)) ions, which means a potent colorimetric sensor based on a Chrysoidine G ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2016.02.110
更新日期:2016-06-01 00:00:00
abstract::Addressing food security issues arising from phosphorus (P) scarcity is described as one of the greatest global challenges of the 21st Century. Dependence on inorganic phosphate fertilisers derived from limited geological sources of P creates an urgent need to recover P from wastes and treated waters, in safe forms th...
journal_title:Chemosphere
pub_type: 杂志文章,评审
doi:10.1016/j.chemosphere.2017.07.089
更新日期:2017-11-01 00:00:00
abstract::Perchlorate (ClO(4)(-)), which is used as an oxidizer in jet and rocket fuels, pyrotechnic devices and explosives, is a widespread contaminant in surface waters and groundwater of many countries. Perchlorate is known to affect thyroid function. Despite the compound's widespread occurrence and potential health effects,...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2009.02.054
更新日期:2009-06-01 00:00:00
abstract::In the paper, we explored the influences of different dosages of iron and calcium carbonate on contaminant removal efficiencies and microbial communities in algal ponds combined with constructed wetlands. After 1-year operation of treatment systems, based on the high-throughput pyrosequencing analysis of microbial com...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2017.09.020
更新日期:2017-12-01 00:00:00
abstract::The mobility of atrazine [6-chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine] from alginate-bentonite-based controlled release (CR) formulations was investigated by using soil columns. Two CR formulations based on sodium alginate (14.0 g kg(-1), atrazine (6.0 g kg(-1), natural or acid-treated bentonite (50 g kg...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/s0045-6535(00)00112-0
更新日期:2001-04-01 00:00:00
abstract::Enantiomeric fractions (EFs) are used extensively in environmental pollutant research because of the insights on biochemical weathering available from quantifying enantiomeric composition. While this analysis is powerful, it can also be subject to significant error, depending on how chromatographic peaks are integrate...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2009.01.041
更新日期:2009-05-01 00:00:00
abstract::Recently, polyaniline (PANI) has received widespread attention for the free volume, optical transmittance and electrical conductivity. In this study, a chemical vapor deposition method was developed to synthesize the conductive PANI-clay composite catalyzed by Fe(III)-saturated attapulgite (Fe(III)-ATTP). The reaction...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2018.01.050
更新日期:2018-04-01 00:00:00