Abstract：
:The key stocks and flows of phosphorus (P) through food consumption in Beijing and Tianjin, two megacities in northern China, were explored using a material flow analysis (MFA) approach to construct a static model of P metabolism. A total of 4498 t P has accumulated with 72% of P flow imported through food consumption eventually remaining in Beijing in 2008. Around 64% of the total inflow of P (2670 t) remained in Tianjin in 2008. P in the uncollected sewage from both urban and rural residents and the effluents from sewage treatment plants has significant negative effects on water quality. An average of 55% the P flow remained in the sewage sludge through urban food consumption. The key problems in P metabolism and management in megacities are identified based on the quantitative analysis of P cycling through food consumption. Relevant solutions for improving P recycling efficiency are also discussed. It is important to link P flows with environmental regulations and to establish a strong coordination between urban and rural areas for nutrient recycling to attain sustainable development of megacities.
journal_name
Chemospherejournal_title
Chemosphereauthors
Qiao M,Zheng YM,Zhu YGdoi
10.1016/j.chemosphere.2011.01.050subject
Has Abstractpub_date
2011-08-01 00:00:00pages
773-8issue
6eissn
0045-6535issn
1879-1298pii
S0045-6535(11)00078-6journal_volume
84pub_type
杂志文章相关文献
CHEMOSPHERE文献大全abstract：:Granular activated carbon (GAC) exhaustion rates on pulp and paper effluent from South East Australia were found to be a factor of three higher (3.62cf. 1.47kgm(-3)) on Kraft mills compared to mills using Thermomechanical pulping supplemented by Recycled Fibre (TMP/RCF). Biological waste treatment at both mills result...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2011.11.059
更新日期：2012-02-01 00:00:00
abstract：:A carboxy methyl cellulose-nano organoclay (nano montmorillonite modified with 35-45 wt % dimethyl dialkyl (C14-C18) amine (DMDA)) composite was prepared by solution intercalation method. The prepared composite was characterized by infrared spectroscopy (FTIR), X-Ray diffraction spectroscopy (XRD) and scanning electro...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2017.01.084
更新日期：2017-04-01 00:00:00
abstract：:PCDD/F analyses were made in soil and ambient air samples taken from Kocaeli, an industrialized area of Turkey. Results showed that the levels of PCDD/F pollution are comparable to the levels observed in the various urban areas in the world. PCDD/F concentrations in surface soils ranged between 0.4 and 4.27 pg I-TEQ k...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2004.12.029
更新日期：2005-06-01 00:00:00
abstract：:The photocatalytic oxidation of high levels of volatile chlorinated organic compounds in gas phase has been studied using a specially designed photoreactor. The influence of light intensity, initial water vapour concentration, temperature, inlet contaminant concentration and flow rate on destruction efficiency has bee...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/s0045-6535(99)00558-5
更新日期：2000-10-01 00:00:00
abstract：:The concentrations of indicator polychlorinated biphenyls (PCBs) and organochlorine insecticides were determined in bonito (Sardasarda L. 1758) and anchovy (Engraulisencrasicolus L. 1758) from the Black Sea, Turkey. Concentrations of total indicator PCBs ranged between <1-17.0 in bonito, and <1-17.5 ng/g fresh weight ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2011.09.017
更新日期：2011-12-01 00:00:00
abstract：:Colloidal gas aphron dispersions (CGAs) can be described as a system of microbubbles suspended homogenously in a liquid matrix. This work examines the performance of CGAs in comparison to surfactant solutions for washing low levels of arsenic from an iron rich soil. Sodium Dodecyl Sulfate (SDS) and saponin, a biodegra...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2014.06.087
更新日期：2015-01-01 00:00:00
abstract：:An in vitro method that simulated the physiological conditions of the digestive process was applied to samples taken from an old mining site, providing information on the levels of metals (Cd, Pb and As) that can be ingested and assimilated by humans. Samples were first characterized by determining pH, texture, minera...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2005.08.017
更新日期：2006-04-01 00:00:00
abstract：:Water and sediment samples collected from 18 wetland ponds within and outside industrial areas were examined for cadmium concentration and water quality parameters during the period of January to July 1996. The Cd contents in gill, liver, mantle and shell of freshwater mussel (Lamellidens marginalis) as well as leaves...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2003.10.016
更新日期：2004-04-01 00:00:00
abstract：:Trophic relationships and heavy metal transference in a coastal subtropical lagoon marine food web were investigated through the use of stable isotopes in food sources and biota. A selective extraction scheme was applied to the surface sediments as an indirect way to evaluate the potential of toxicity of metals. Resul...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2009.09.025
更新日期：2009-11-01 00:00:00
abstract：:A bacterial isolate producing siderophore under iron limiting conditions, was isolated from mangroves of Goa. Based on morphological, biochemical, chemotaxonomical and 16S rDNA studies, the isolate was identified as Bacillus amyloliquefaciens NAR38.1. Preliminary characterization of the siderophore indicated it to be ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2013.06.036
更新日期：2013-11-01 00:00:00
abstract：:The disinfection of helminth eggs and Escherichia coli contaminated aqueous solutions, was studied using an electro-Fenton reactor equipped with a polarized activated carbon (AC) packed bed and two chambers loaded with cation exchange resins. Experiments using different arrangements and operation conditions, revealed ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2020.126260
更新日期：2020-07-01 00:00:00
abstract：:The role of microplastics (MPs) as a carrier of pollutants in water environment is an emerging issue; however, information regarding the underlying mechanisms for malachite green (MG) and Pb(II) adsorption onto hexabromocyclododecane (HBCD)-polystyrene (PS) composites MPs (HBCD-PS MPs) is still lacking. In this study,...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2020.129079
更新日期：2021-02-01 00:00:00
abstract：:The present study was performed to assess the level of biologically potent metallic elements (Al, Cd, Cr, Cu, Hg, Mn, Pb and Zn), metalloid (As) and non-metal (Se) in different raw food from open markets in Kinshasa (Democratic Republic of Congo) and Johannesburg (South Africa). Hundred twenty different food samples c...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2017.12.134
更新日期：2018-04-01 00:00:00
abstract：:In natural environments, humic substances (HS) play a key role in the control of Cd stability by forming Cd-HS complexes. In this study, we investigated the influence of the photo-irradiation on the Cd levels remaining in Leonardite humic acid (HA) standard solution after chemical precipitation. The kinetic experiment...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2019.03.029
更新日期：2019-06-01 00:00:00
abstract：:Antibiotics and pesticides may exist as a mixture in real environment. The combined effect of mixture can either be additive or non-additive (synergism and antagonism). However, no effective predictive approach exists on predicting the synergistic and antagonistic toxicities of mixtures. In this study, we developed a ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2018.01.142
更新日期：2018-05-01 00:00:00
abstract：:This study experimentally demonstrated that polyphosphate accumulating organisms (PAOs) losing the abilities of anaerobically synthesizing polyhydroxyalkanoates and aerobically taking up phosphate under Cu(II) presence was due to the inhibition of enzyme activities of acetyl-CoA synthases (ACS) and polyphosphate kinas...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2012.11.080
更新日期：2013-04-01 00:00:00
abstract：:Photocatalytic nanoparticles have been receiving considerable attention for their potential use in many environmental management applications, including urban air quality control. This paper investigates the performance of surface modified WO3/TiO2 composite particles in removing gaseous nitrogen oxides (NOx) under vi...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2017.05.069
更新日期：2017-09-01 00:00:00
abstract：:A combined treatment for the degradation of the chlorophenoxy herbicides 2,4-D and MCPA in water by means of Fenton and biological oxidation has been studied. The chemical oxidation step was necessary to achieve an efficient removal of these pollutants due to their toxicity and low biodegradability. Aqueous herbicide ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2013.04.097
更新日期：2013-09-01 00:00:00
abstract：:Ferric and manganese binary oxide (FMBO) has been successfully used to remediate arsenic-polluted river, but there still lacks sufficient data to evaluate its effects on environments. The release behaviors of iron (Fe), manganese (Mn), and arsenic (As) in different E(h) ranges were investigated for As-bearing FMBO sed...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2011.01.066
更新日期：2011-05-01 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：:The sorption coefficients of four rarely studied zwitterionic pharmaceuticals (benzimidazoles: fenbendazole, albendazole, thiabendazole and flubendazole) and four metabolites of fenbendazole to various dissolved organic matter surrogates (humic acid, sodium dodecyl sulfate micelle, hydroxypropyl-beta-cyclodextrin and ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2010.04.029
更新日期：2010-06-01 00:00:00
abstract：:Sorption of pyrene on black carbons (BCs) obtained by heating sawdust at two temperatures (400 and 700°C, denoted as 400BC and 700BC, respectively), as well as on modified BCs (via oxidation, oximation, and hydrolysis) was studied to investigate the role of BC structural characteristics in sorption of hydrophobic orga...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2011.07.042
更新日期：2011-11-01 00:00:00
abstract：:This paper reports on the effect of aqueous and nano-particulated Pb on oxidative stress (lipid peroxidation), cytoxicity, and cell mortality. As determined by the Thiobarbituric Acid Reactive Substances (TBARS) method, only 6h after incubation aqueous suspensions bearing nano-sized PbO(2), soluble Pb(II), and brain-h...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2011.05.018
更新日期：2011-09-01 00:00:00
abstract：:A long-term randomised block field experiment was established in 1997 to study the dynamics of total P and dissolved P in the surface waters of rice fields receiving two application rates of fertiliser P and one rate of combined fertiliser and manure P. Preliminary results from the first two crops show that concentrat...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/s0045-6535(00)00127-2
更新日期：2001-01-01 00:00:00
abstract：:To investigate the environmental levels and profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs), tree bark samples (n=22) were collected from Luqiao, an E-waste recycling area, in east China in July 11-13, 2006. The ave...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2008.10.002
更新日期：2009-02-01 00:00:00
abstract：:A previous study using a suite of hepatic enzymatic biomarker in two demersal fish species (Lepidorhombus boscii and Callionymus lyra) indicated exposure of the fish to the hydrocarbons in the oil spilled by the Prestige five months after the accident. The main objective of this follow-up study is to determine whether...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2008.10.052
更新日期：2009-02-01 00:00:00
abstract：:A developed multi-residue method using microflow-LC-ESI-QqQ-MS provided a wide-scope analysis for medium-polar and polar pesticide residues (120 compounds including breakdown products). Honeybee wax comb samples were extracted using a generic QuEChERS based procedure. Acceptable recoveries at concentration levels of 5...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2016.07.008
更新日期：2016-11-01 00:00:00
abstract：:Intense seaweed grazing by sea urchins has destroyed kelp forests and accelerated the transformation of these forests into barren areas known as urchin barrens. Once the sea urchins occupy the barren ground, it becomes more challenging to restore the kelp forests. Although phlorotannin, a primary herbivore defense che...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2020.128276
更新日期：2021-01-01 00:00:00
abstract：:Widespread contamination of arsenic (As) has become a global public health concern. Exposure to As causes respiratory complications. Asthma, a major respiratory complication, is increasing worldwide. However, the effect of chronic As exposure on the risk of asthma remains to be clarified. This study aims to examine th...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2019.125790
更新日期：2020-05-01 00:00:00
abstract：:Illumination of tetraphenyl porphyrin sulfonate (TPPS), CuTPPs and FeTTPPS in solution with trinitrotoluene (TNT) at pH7 at room temperature using tungsten lamp illumination results in the degradation of TNT to yield trinitrobenzoic acid and trinitrobenzene. No other degradation products are observed. The rate of TNT ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2005.09.013
更新日期：2006-05-01 00:00:00
