Abstract:
:Galena weathering often occurs in nature and releases metal ions during the process. Humic acid (HA), a critical particle of natural organic matter, binds metal ions, thus affecting metal transfer and transformation. In this work, an electrochemical method combined with spectroscopic techniques was adopted to investigate the interfacial processes involved in galena weathering under acidic and alkaline conditions, as well as in the presence of HA. The results show that the initial step of galena weathering involved the transformation Pb2+ and S°, regardless of whether the solution was acidic or alkaline. Under acidic conditions, S° and Pb2+ further transform into anglesite, and HA adsorbs on the galena surface, inhibiting the transformation of sulfur. HA and Pb (II) ions form bridging complexes. Under alkaline conditions without HA, the sulfur produced undergoes no transformation, whereas Pb2+ will transform into PbO. The presence of HA changes the galena weathering mechanism via ionization effect, and Pb2+ is ultimately converted into anglesite. Higher acidity in acidic conditions or higher alkalinity in alkaline conditions causes galena corrosion when the electrolyte does not contain HA. Conversely, higher pH always accelerates galena corrosion when the electrolyte contains HA, whether the electrolyte is acidic or alkaline. At the same acidity/alkalinity, increasing the concentration of HA inhibits galena weathering. Galena will release 134.7 g m-2·y-1 Pb2+ to solution at pH 2.5, and the amount decreases to 28.09 g m-2·y-1 in the presence of 1000 mg/L HA. This study provides an in situ electrochemical method for the assessment of galena weathering.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Liu Q,Li H,Jin G,Zheng K,Wang Ldoi
10.1016/j.ecoenv.2018.04.030subject
Has Abstractpub_date
2018-08-30 00:00:00pages
230-238eissn
0147-6513issn
1090-2414pii
S0147-6513(18)30330-0journal_volume
158pub_type
杂志文章abstract::The effects of single and repeated doses of trimethyltin (TMT) treatment on the central nervous system (CNS) of the marmoset were investigated. For the acute-dose experiment adult animals were administered 3 mg/kg of TMT chloride (ip) and were then observed for changes in behavior. Within 24 hr postinjection all anima...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1006/eesa.1993.1058
更新日期:1993-12-01 00:00:00
abstract::Young brown bullhead (Ictalurus nebulosus) were exposed to aminocarb (4-dimethylamino-3-methylphenyl N-methylcarbamate) at lethal and sublethal concentrations and the tissue distribution of total unspecified residues was examined. The concentration of residues in each tissue increased with the concentration of exposur...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/0147-6513(86)90055-2
更新日期:1986-10-01 00:00:00
abstract::Cyanobacterial blooms and cyanotoxins occur in freshwater lakes and reservoirs all over the world. Bacterial degradation of microcystins (MC), hepatotoxins produced by several cyanobacterial species, has also been broadly documented. However, information regarding MC biodegradation in European water bodies is very lim...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2017.07.046
更新日期:2017-11-01 00:00:00
abstract::The different cell types in the opercular epidermis of Rita rita when exposed to a synthetic detergent, dodecylbenzene sodium sulfonate in the concentration of 6.9 mg liter-1 (96-hr LC50 of the detergent), had a gradual decrease in the activity of various enzymes responsible for different metabolic processes occurring...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/0147-6513(89)90009-2
更新日期:1989-02-01 00:00:00
abstract::Large amount of oil cake is generated during biodiesel production from Jatropha seeds. Although Jatropha oil cake is rich in plant nutrients, presence of toxic phorbol esters restricts the usage of oil cake as a fertilizer. The objective of this study is to evaluate the components and tumor promoting activity of phorb...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2014.07.009
更新日期:2015-04-01 00:00:00
abstract::The strobilurins are used widely in the world as effective fungicidal agents to control Asian soybean rust. In this study, the early life stage of grass carp (Ctenopharyngodon idella), which is one of the most important aquaculture species in China, was chosen to measure the acute toxicity of three common strobilurin-...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2013.10.011
更新日期:2013-12-01 00:00:00
abstract::Leaf vegetables have strong capabilities to take up cadmium (Cd) compared to other vegetable varieties. Until now, the differences in Cd uptake and accumulation by leaf vegetables from different families and genera and the related health risks were unknown. To remedy this, we studied 71 leaf vegetables (multiple genot...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2019.109593
更新日期:2019-11-30 00:00:00
abstract::In this study, using a natural and green protein R-phycoerythrin (R-PE) extracted from marine Porphyra yezoensis as the stabilizer and reducer, silver nanoparticles (AgNPs) were synthesized. Based on this, a highly sensitive and selective method for the detection of Cu2+ ions was developed using R-PE-AgNPs as fluoresc...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2018.10.102
更新日期:2019-01-30 00:00:00
abstract::In order to grow and effectively uptake and accumulate cadmium (Cd), plants used for phytoextraction have to cope with toxicity, which may be influenced by the supply of nitrate (NO3-) and ammonium (NH4+). Thus, we evaluated the effect of these nitrogen forms on the photosynthetic and antioxidant enzyme activities of ...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2019.02.090
更新日期:2019-06-15 00:00:00
abstract::Lepidium sativum (cress) and Lycopersicon esculentum (tomato) plants were grown in peatlite in controlled environments with or without long-term (4 weeks) cadmium stress (Cd) (100 micrograms/ml every fourth day) and with a single exposure (6 hr at 35 parts per hundred million (pphm)) or no exposure to the oxidant ozon...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/0147-6513(94)90006-x
更新日期:1994-12-01 00:00:00
abstract::Laboratory experiments were undertaken to relate biomarker responses to the toxicities of multi-walled carbon nanotubes (MWCNTs) and sodium pentachlorophenate (PCP-Na), both individually and combined. The acute toxicities of MWCNTs and PCP-Na on earthworm Eisenia fetida were studied through different exposure methods ...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2014.01.041
更新日期:2014-05-01 00:00:00
abstract::This research assesses the effects of nitrite pulses and post-exposure periods after nitrite exposures on the survival of the freshwater amphipod Eulimnogammarus toletanus. A toxicity bioassay was performed using three different nitrite concentrations (0.5, 5.0 and 10.0 mg/L NO(2)-N), four pulse exposures (1, 8, 24 an...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2009.06.008
更新日期:2009-10-01 00:00:00
abstract::Target screening of 463 organic contaminants in surface water using ultra high performance liquid chromatography quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS) with direct injection was performed in spring of 2015 in northern Macedonia, at six sampling sites in four rivers belonging to Vardar basin: Kriva...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2016.09.004
更新日期:2017-01-01 00:00:00
abstract::Antioxidant systems were studied in the freshwater bivalve Unio tumidus transplanted from a control site to four different contaminated areas, in order to study the biological response according to the contamination characteristics. Reduced and oxidized glutathione (GSH, GSSG), the activities of antioxidant enzymes su...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1006/eesa.1999.1842
更新日期:2000-02-01 00:00:00
abstract::Extensive industrial activities have led to an increase of the content of chromium in the environment, which causes serious pollution to the surrounding water, soil and atmosphere. The enrichment of chromium in the environment through the food chain ultimately affects human health. Therefore, the remediation of chromi...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章,评审
doi:10.1016/j.ecoenv.2020.111699
更新日期:2021-01-15 00:00:00
abstract::Cholinium-based ionic liquids are receiving crescent interest in diverse areas of application given their biological compatibility and potential for industrial application. In this work, mono and dicationic cholinium ionic liquids as well as cholinium derivatives were synthesized and their toxicity assessed using the ...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2014.07.003
更新日期:2014-10-01 00:00:00
abstract::The biocide tributyltin has been found to cause the development of pseudohermaphroditic conditions in some neogastropod species. These abnormalities of the reproductive system have adversely affected the fecundity of some field populations of gastropods, resulting in local population declines. Current evidence suggest...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1006/eesa.1999.1859
更新日期:2000-03-01 00:00:00
abstract::This is the first report of isolation of Pseudomonas pickettii from a normal adult bovine duodenum. This organism was one of several bacteria isolated as part of a study to examine cadmium resistance genes (cad(r)) for use in generating transgenic plants to reclaim cadmium-contaminated soils in Kansas. P. pickettii co...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/s0147-6513(02)00076-3
更新日期:2003-03-01 00:00:00
abstract::Triphenyl phosphate (TPP) has been found in various environmental media and in biota suggesting widespread human exposure. However, there is still insufficient information on the hepatotoxicity mechanisms of health risk exposed to TPP. In this study, TPP could induce human normal liver cell (L02) apoptosis, injury cel...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2020.111126
更新日期:2020-12-01 00:00:00
abstract:BACKGROUND:Bisphenol A (BPA) is a well-known xenobiotic endocrine disrupting chemical, with estrogenic activity and many other potential biological effects. Although multiple toxicities have been reported for BPA, molecular mechanisms underlying the transgenerational toxic effects of BPA are still underestimated. METH...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2020.111165
更新日期:2020-12-01 00:00:00
abstract::The acute and chronic toxicities of lindane to larvae of the freshwater insects Chironomus riparius Meigen, Chaoborus flavicans (Meigen), and Sigara striata (L.) were investigated in mesocosm compartments of an experimental pond. The following median lethal concentrations (LC50s) were determined: 240-hr LC50 of 2.0 mi...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/0147-6513(92)90023-v
更新日期:1992-02-01 00:00:00
abstract::The Drosophila melanogaster male germ cells are sensitive to the recombinogenic activity of chemical compounds. In our experiments, we have employed four recessive markers located on the 2nd chromosome: dumpy (dp, 13.0), black (b, 48.5), cinnabar (cn, 57.5), and brown (bw, 104.5); b and cn flank the centromere. Three-...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2005.05.022
更新日期:2006-09-01 00:00:00
abstract::The degradation behavior of metaflumizone was studied in a rice field ecosystem, and a simple and reliable analytical method was developed for determination of metaflumizone in soil, rice straw, paddy water and brown rice. Metaflumizone residues were extracted from samples with acetonitrile. The extract was cleaned up...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2012.08.029
更新日期:2012-12-01 00:00:00
abstract::A high-throughput and automated assay for testing the presence of acetylcholine esterase (AChE) inhibiting compounds was developed, validated and applied to screen different types of environmental samples. Automation involved using the assay in 96-well plates and adapting it for the use with an automated workstation. ...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2016.04.005
更新日期:2016-08-01 00:00:00
abstract::Juvenile Atlantic cod were exposed to either the water-accommodated fraction (WAF) or the chemically enhanced water-accommodated fraction (CEWAF) of Mediterranean South American (MESA), a medium grade crude oil at three different temperatures. Two concentrations of each mixture were tested, 0.2% and 1.0% (v/v) at 2, 7...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2010.12.013
更新日期:2011-05-01 00:00:00
abstract::Free-living bank voles have been shown to be more sensitive to cadmium (Cd) toxicity than the rodents exposed to Cd under laboratory conditions. The present study was designed to find out whether polychlorinated biphenyls (PCBs), common environmental co-contaminants, increase susceptibility to Cd toxicity through inhi...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2007.03.014
更新日期:2008-03-01 00:00:00
abstract::Previously we have shown a toxic effect of the organometallic compound triphenyllead (TPhPb) on cells. In the present study we evaluated the destructive effect of TPhPb on model systems--serum albumin and liposome membranes--alone and under UVB irradiation. UVB irradiation of bovine serum albumin results in protein S-...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2012.11.005
更新日期:2013-03-01 00:00:00
abstract::Silver nanoparticles (AgNPs) are widely used in industry, increasing their potential level in the environment. Plant root, the key organ absorbing water and nutrients, are directly exposed to the soil. Little is known about AgNP-mediated effects on plant root growth. Here, we show that AgNPs are absorbed by root and m...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2019.110072
更新日期:2020-03-01 00:00:00
abstract::Biotechnology is considered as a promising technology for the removal of polycyclic aromatic hydrocarbons from the environment. Free bacteria are often sensitive to some biotic and abiotic factors in the environment to the extent that their ability to effect biodegradation of organic pollutants, such as polycyclic aro...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2016.11.019
更新日期:2017-04-01 00:00:00
abstract::Enchytraeidae were investigated as a part of a broad study of Niepolomice Forest ecosystem functioning. Animals were collected in oak-hornbeam (Tilio-Carpinetum) and in mixed oak-pine (Pino-Quercetum) stands. The highest cadmium concentration was observed in oak-hornbeam from the northern part of the forest (32.33+/-2...
journal_title:Ecotoxicology and environmental safety
pub_type: 杂志文章
doi:10.1016/j.ecoenv.2003.08.006
更新日期:2004-01-01 00:00:00