Abstract:
:The purpose of this study was to evaluate photodegradabilities of the following new low-nitrogen chelating agents: N-bis[(carboxymethoxy)ethyl]glycine (compound 1), N-bis[(1,2-dicarboxyethoxy)ethyl]glycine (compound 2) and N-bis[(1,2-dicarboxyethoxy)ethyl]aspartic acid (compound 3). At first photodegradation of these chelating agents as uncomplexed Na-compound 1-3 and Cu(II) complexes were tested, both in lake and distilled water, by exposing them to near-UV region radiation at the range of 315-400 nm. Uncomplexed Na-compounds 2 and 3 were selected to sunlight exposure experiments carried out in lake and distilled water. Compound 3 was also tested in sunlight as Cu and Ca complexes in both solutions. Photodegradation of Na(6)-compound 3 in distilled water was studied by exposing it to radiation at the wavelength of 253.7 nm. Photodegradation products were analysed by means of GC-MS (gas chromatography with mass selective detector). The results demonstrated that compound 1 was quite photostable even as Cu complex while compounds 2 and 3 were found to be photodegradable. Over 90% reduction of compound 3 was achieved during one week and 80% reduction of compound 2 in two weeks' time when they were added as Na salt to lake water and exposed to sunlight. Compound 3 as Cu complex degraded totally in the sunlight in less than one week. In the case of compound 3, the degradation rate decreased depending on the counter cation in the order Cu > Na > or = Ca. The study demonstrated that photodegradation of Na(6)-compound 3 does not result in total mineralization of the compound. A photodegradation pathway for Na(6)-compound 3 is proposed.
journal_name
Chemospherejournal_title
Chemosphereauthors
Metsärinne S,Peltonen P,Aksela R,Tuhkanen Tdoi
10.1016/j.chemosphere.2004.05.026subject
Has Abstractpub_date
2004-09-01 00:00:00pages
1077-84issue
11eissn
0045-6535issn
1879-1298pii
S0045-6535(04)00348-0journal_volume
56pub_type
杂志文章相关文献
CHEMOSPHERE文献大全abstract::Particle toxicity and metal ions from the dissolution of metallic nanoparticles (NPs) can have environmentally toxic effects. Among the diverse metallic NPs, four types of zinc oxide NPs (ZnO-NPs)-two spherical (diameters <50 nm and <100 nm) and two wire (50 nm × 300 nm and 90 nm × 1000 nm) shaped-were examined using ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2016.08.030
更新日期:2016-11-01 00:00:00
abstract::The environmental impact of toxic metal contamination from legacy mining activities, many of which had operated and were closed prior to the enforcement of robust environmental legislation, is of growing concern to modern society. We have carried out analysis of As and potentially toxic metals (Cd, Co, Cr, Cu, Hg, Mn,...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2017.10.150
更新日期:2018-02-01 00:00:00
abstract::We developed a single-walled carbon nanotubes (SWCNTs)-based electrochemical biosensor for the detection of Bacillus subtilis, one of the microorganisms observed in Asian dust events, which causes respiratory diseases such as asthma and pneumonia. SWCNTs plays the role of a transducer in biological antigen/antibody re...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2017.02.060
更新日期:2017-05-01 00:00:00
abstract::Semipermeable membrane devices (SPMDs) are commonly used as a time-integrated measure of aqueous concentrations of persistent hydrophobic chemicals, including PAH, pesticides, dioxins, and PCBs. Another class of persistent hydrophobic chemicals is petroleum biomarker compounds (hopanes and steranes) that are used for ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/S0045-6535(03)00576-9
更新日期:2003-11-01 00:00:00
abstract::Responses of wheat (Triticum aestivum L.) seedling roots to the mixtures of copper (Cu), cadmium (Cd) and humic acids (HA) were investigated using the solution culture experiments, focusing on the interaction patterns between multiple metals and their influences on root proton release. A concentration-addition multipl...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2018.02.010
更新日期:2018-05-01 00:00:00
abstract::Polybrominated diphenyl ethers (PBDEs) have recently been shown to be on the increase in the environment and in human milk. The most commonly found PBDE congener in human milk is 2,2',4,4',5-penta BDE (BDE-99). The aim of the present study was to investigate the neurotoxic effects of BDE-99 (2 mg kg(-1)d(-1)) administ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2009.01.004
更新日期:2009-05-01 00:00:00
abstract::Gross alpha and gross beta activities were determined for 27 different tap water samples collected from Eastern Black Sea region of Turkey. The instrumentation used to count the gross alpha and gross beta activities was a alpha/beta counter of the low background multiple detector type with 10 sample detectors (Berthol...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2005.05.051
更新日期:2006-02-01 00:00:00
abstract::Glyphosate [N-(phosphonomethyl)-glycine] is a broad-spectrum, non-selective, post-emergence herbicide that is widely used in agricultural. We studied, in vitro, changes in the microbial activity of typical Hapludult and Hapludox Brazilian soils, with and without applied glyphosate. Glyphosate was applied at a rate of ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/S0045-6535(03)00266-2
更新日期:2003-08-01 00:00:00
abstract::Degradation of hydrofluoro-olefins (HFOs) with oxidants plays a significant role in the troposphere. Thus, we have investigated detail theoretical calculations of hydroxyl radical (•OH) initiated oxidation of 2-fluoropropene (CH3CFCH2) using M06-2X/6-311++G(d,p) level of theory. Here, we have considered different poss...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2019.124556
更新日期:2020-01-01 00:00:00
abstract::Reported evidence regarding relationships between polychlorinated biphenyls (PCBs) and thyroid homeostasis in adults has been considered contradictory. The objective of this systematic review is to determine a possible association between PCB exposure and the circulating thyroid hormones and thyrotropin (TSH) levels i...
journal_title:Chemosphere
pub_type: 杂志文章,评审
doi:10.1016/j.chemosphere.2008.11.031
更新日期:2009-03-01 00:00:00
abstract::We investigated the concentrations of 23 elements in groundwater from arsenic (As) contaminated areas of Bangladesh and West Bengal, India to determine the potential human exposure to metals and metalloids. Elevated concentrations of As was found in all five study areas that exceeded the World Health Organization (WHO...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2015.05.051
更新日期:2015-11-01 00:00:00
abstract::To take an insight into the long-term accumulation of chromium (Cr) and cadmium (Cd) in school-age children living near an MWI and to assess their early renal impairment, we conducted a cross-sectional study in 2015. A total of 116 children from the exposure area and 122 from the control area were recruited. We measur...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2019.125081
更新日期:2020-02-01 00:00:00
abstract::During the last years the pulsed electric field (PEF) method entered several fields of application. A promising application is the decontamination of hospital wastewater effluents, which are loaded with pathogenic and increasingly with antibiotic-resistant bacteria. For this study, Pseudomonas putida suspended in buff...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2008.11.066
更新日期:2009-04-01 00:00:00
abstract::A system of recirculating channels was used in this study to examine the long-term effects (29d) of environmentally realistic concentrations of the herbicide diuron (from 0.07 to 7 microg L(-1)) on biofilm communities. The autotrophic activity of biofilms was affected by this herbicide, as reflected by a marked decrea...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2009.06.017
更新日期:2009-09-01 00:00:00
abstract::The profile and amount of dioxin impurity in agrochemicals were studied through detailed analysis of historic Japanese formulations. The chemicals analyzed include pentachlorophenol (PCP), 2,4,6-trichlorophenyl-4'-nitrophenyl ether (chloronitrofen, CNP), 2,4-dichlorophenyl-4'-nitrophenyl ether (nitrofen, NIP), tetrach...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/s0045-6535(00)00310-6
更新日期:2001-08-01 00:00:00
abstract::In this study, the promoting effect of soluble organic fertilizer (SOF) on arsenic (As) release and depletion by rice plant in flooded paddy soil was investigated. The increased soil DOC with SOF incorporation displayed a significantly positive correlation with As in soil solution (r = 0.415, p < 0.01). Porewater As w...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.126521
更新日期:2020-08-01 00:00:00
abstract::Oxidative degradation of Alizarin Red S (ARS) in aqueous solutions by using electro-Fenton was studied. At first, effect of operating parameters such as current density, aeration rate and initial pH on the degradation of ARS were studied by using UV-vis spectrum, respectively. Then, under the optimal operating conditi...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2013.09.056
更新日期:2013-11-01 00:00:00
abstract::1,4-dioxane is often found as a co-contaminant with chlorinated volatile organic compounds (VOCs) at solvent release sites such as landfills, solvent recycling facilities, or fire training areas. Historically, soil and groundwater samples were not routinely analyzed for 1,4-dioxane and therefore the number of known 1,...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2015.08.063
更新日期:2016-02-01 00:00:00
abstract::This paper reports on an intensive study into releases of polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated furans (PCDF) and polychlorinated biphenyls (PCB) from a diesel engine and the analysis of PCDD/F and PCB in crankcase lubricating oil. Experimental conditions were set and carefully controlled in order ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2006.12.010
更新日期:2007-04-01 00:00:00
abstract::Humic substance in compost contains various organic functional groups that can sorb metal ions through ionic force. This study used thermal treatment technology to concentrate copper in the heated residues while destroying the humic substance of copper-sorbed kitchen compost. Scanning electron microscopy (SEM) results...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2004.08.046
更新日期:2004-12-01 00:00:00
abstract::The green credentials of ionic liquids (ILs) are being challenged due to the increasing evidence of their toxicity. The hormetic effects further raised their ecological concern. However, it remained poorly studied on the time-dependent changes of the hormetic effects and the mechanisms. In this study, we investigated ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2012.11.070
更新日期:2013-04-01 00:00:00
abstract::This study aimed to reveal the baseline of natural variations in antibiotic resistance genes (ARGs) in soil without anthropogenic activities over the decades. Nine soil samples with different time of soil formation were taken from the Yancheng Wetland National Nature Reserve, China. ARGs and mobile genetic elements (M...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.128985
更新日期:2021-03-01 00:00:00
abstract::Humic acids, HA represent a large portion of natural organic matter in soils, sediments and waters. They are environmentally important materials due to their extensive ubiquity and strong complexation ability, which can influence heavy metal removal and transportation in waters. The thermodynamics and kinetics of the ...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2014.04.088
更新日期:2014-09-01 00:00:00
abstract::The increasing use of cyclodextrins (CDs) as host-molecules for host-guest complexes and their remediation application in environmental science requires to establish easily accessible models of "quantitative structure-activity relationships" (QSARs) to predict the binding constants. A new open-source molecular descrip...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2019.03.020
更新日期:2019-06-01 00:00:00
abstract::We investigated the potential of the laccase from the white-rot fungus Marasmius quercophilus to transform certain alkylphenols (p-nonylphenol, p-octylphenol and p-t-octylphenol). We tested the reactivity of this enzyme under different conditions: in liquid cultures and using the partially purified laccase with and wi...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2010.10.001
更新日期:2011-01-01 00:00:00
abstract::The goal of this study was to characterize body burdens of polychlorinated dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) in three groups of Siberians living in the Irkutsk Region of Russia. These groups included firefighters exposed to a mixture of toxic substances exting...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/s0045-6535(01)00197-7
更新日期:2002-04-01 00:00:00
abstract::Anaerobic digestion is a promising waste-to-energy alternative technology. However, the efficiency upgrading for conventional mesophilic digestion of organic solid waste is always indispensable. Employing hyperthermophilic or thermophilic microbial community is one of the viable upgrading alternatives. Given the unava...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.128047
更新日期:2021-01-01 00:00:00
abstract::Because heavy metals (HMs) occurring naturally in soils accumulate continuously due to human activities, identifying and apportioning their sources becomes a challenging task for pollution prevention in urban environments. Besides the enrichment factors (EFs) and principal component analysis (PCA) for source classific...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2015.01.048
更新日期:2015-05-01 00:00:00
abstract::A practical and efficient disposal method for hydrodechlorination of polychlorinated biphenyls (PCBs) in transformer oil is reported. Transformer oil containing PCBs was treated by nanometric sodium hydride (nano-NaH) and transition metal catalysts. High destruction and removal efficiency (89.8%) can be attained by na...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2004.11.079
更新日期:2005-08-01 00:00:00
abstract::The logarithm of gas/particle (G/P) partition quotient (logKP) has been found to have a linear relationship with logKOA (octanol-air partition coefficient) with slope mo and intercept bo and logPL (subcooled liquid vapor pressure) with slope mp and intercept bp. In the sister paper of the present work, analytical equa...
journal_title:Chemosphere
pub_type: 杂志文章
doi:10.1016/j.chemosphere.2020.128860
更新日期:2020-11-04 00:00:00