Removal behaviors and mechanisms of orthophosphate and pyrophosphate by calcined dolomite with ferric chloride assistance.

abstract：:Bottom ash from open-burning of municipal waste practised in developing countries poses a risk of heavy metal leaching into groundwater. Compared to incineration ash, there is limited information on heavy metal leaching from open-burning ash and soil from non-engineered landfills. Batch and column experiments were con...

journal_title：Chemosphere

authors： Gwenzi W,Gora D,Chaukura N,Tauro T

更新日期：2016-03-01 00:00:00

abstract：:The complexing capacity for Cu ions (LT) and the apparent stability constant values (logKapp) were measured in throughfall (TF) and open field bulk deposition (BD), at two Mediterranean forest ecosystems of western Greece. LT was measured for the first time in the TF of natural forests. Concentrations of LT were three...

journal_title：Chemosphere

authors： Karavoltsos S,Fotiadis F,Michopoulos P,Sakellari A,Plavšić M,Bourletsikas A,Kaoukis K,Thomaidis NS,Dassenakis M,Scoullos M

更新日期：2017-01-01 00:00:00

abstract：:Though polychlorinated biphenyls (PCBs) have distributed as threats in the environment to human beings for several decades, monitoring of trace level PCBs in-field is still a challenge. As a potential method for monitoring PCBs at trace levels, Raman spectroscopy has been used to detect several PCBs in the laboratory....

journal_title：Chemosphere

authors： Lai Y,Pan W,Ni S,Zhang D,Zhan J

更新日期：2011-10-01 00:00:00

abstract：:The kinetics of direct photochemical transformations of organic compounds in light absorbing and scattering media has been sparsely investigated. This is mostly due to the experimental difficulties to assess the major parameters: light intensity in porous media, the reaction quantum yield and the molar absorption coef...

journal_title：Chemosphere

authors： Ciani A,Goss KU,Schwarzenbach RP

更新日期：2005-12-01 00:00:00

abstract：:Various mathematical relationships have been used to assess exposure concentrations of organic chemicals when emissions occur via wastewater treatment. These relationships range from a simple removal factor calculation to more sophisticated approaches using kinetic based mathematical models. While these existing appro...

journal_title：Chemosphere

authors： McAvoy DC,Grady CP Jr,Blok J,Feijtel TC,Federle TW,Larson RJ

更新日期：1998-04-01 00:00:00

abstract：:We performed a laboratory investigation of the secondary organic aerosol (SOA) formation from cyclohexene photooxidation with different initial NOx and SO2 concentrations at low and high relative humidity (RH). Both SOA yield and number concentration first increase drastically and then, decreased when the [VOC]0/[NOx]...

journal_title：Chemosphere

authors： Liu S,Jiang X,Tsona NT,Lv C,Du L

更新日期：2019-02-01 00:00:00

abstract：:Anthropic pressure negatively affects natural environments. Lead (Pb) is a non-essential highly toxic metal that is present in aquatic ecosystems. Two daphnid species from two different latitudes, the temperate Daphnia magna and the tropical Daphnia similis were used as test-organisms to evaluate a long-term Pb exposu...

journal_title：Chemosphere

authors： Araujo GS,Pavlaki MD,Soares AMVM,Abessa DMS,Loureiro S

更新日期：2019-03-01 00:00:00

abstract：:The effects of H(2)O vapor on de novo synthesis of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and biphenyls (PCB) were investigated at two levels (none and 10 vol.%) in various model systems containing five different carbons, CuCl(2), and quartz, exposed to a flow of 10% O(2)/N(2) at 300 degrees Cel...

journal_title：Chemosphere

authors： Shao K,Yan J,Li X,Lu S,Wei Y,Fu M

更新日期：2010-02-01 00:00:00

abstract：:A decline in the availability of fossil fuel resources coupled with deleterious environmental concerns has prompted further research into biofuels. Conventional bioethanol production via a first-generation approach may soon become superseded through integration with lignocellulosic feedstocks. However, the underlying ...

journal_title：Chemosphere

authors： Cooper J,Kavanagh J,Razmjou A,Chen V,Leslie G

更新日期：2020-02-01 00:00:00

abstract：:In vitro systems make for rapid identification of xenobiotic effects and can be used to study cellular and subcellular toxicity mechanisms. In this report the metabolic competence of two human-derived cell lines, a hepatic (Hep G2) and a pulmonary one (A549) was tested. In the two cell systems the capability to activa...

journal_title：Chemosphere

authors： Urani C,Doldi M,Crippa S,Camatini M

更新日期：1998-12-01 00:00:00

abstract：:Cadmium-mediated microRNAs have become a heavily researched topic. Few studies mention the regulation of autophagy by cadmium through microRNAs, especially regarding poultry. The kidney is one of the organs most severely affected by cadmium, as it is involved in the accumulation of metal ions; causing such types of da...

journal_title：Chemosphere

authors： Shi Q,Jin X,Fan R,Xing M,Guo J,Zhang Z,Zhang J,Xu S

更新日期：2019-01-01 00:00:00

abstract：:To investigate bioaccumulation, maternal transfer and elimination of polybrominated diphenyl ethers (PBDEs) in amphibians, we collected adult frogs (Rana limnocharis) from a rice field in an e-waste recycling site in China. We found that ∑PBDEs in the whole frogs and various tissues (brain, liver, testis and egg) rang...

journal_title：Chemosphere

authors： Liu PY,Du GD,Zhao YX,Mu YS,Zhang AQ,Qin ZF,Zhang XY,Yan SS,Li Y,Wei RG,Qin XF,Yang YJ

更新日期：2011-08-01 00:00:00

abstract：:Toxicity potentials are scaling factors used in life cycle assessment (LCA) indicating their relative importance in terms of potential toxic impacts. This paper presents the results of an uncertainty assessment of toxicity potentials for 181 substances that were calculated with the global nested multi-media fate, expo...

journal_title：Chemosphere

authors： Huijbregts MA,Guinée JB,Reijnders L

更新日期：2001-07-01 00:00:00

abstract：:A systematic yearlong study was carried out in Dhauladhar region of the North-Western Himalayas to investigate dynamics in the composition and concentration of particulate bound polycyclic aromatic hydrocarbons (PAHs) and their source(s) activity. PM10 samples were collected for 24 h, once every week during January 20...

journal_title：Chemosphere

authors： Kaushal D,Bamotra S,Yadav S,Chatterjee S,Tandon A

更新日期：2021-01-01 00:00:00

abstract：:The adsorption and removal of amaranth (AM) from an aqueous solution by iron oxide nanoparticles (IONPs) coated with cetyltrimethylammonium bromide (CTAB) as adsorbent was reported. The novel magnetic separation was quite efficient for the adsorption and desorption of AM. In an aqueous solution of AM at 25 degrees C, ...

journal_title：Chemosphere

authors： Zargar B,Parham H,Hatamie A

更新日期：2009-07-01 00:00:00

abstract：:Nanosized TiO2 (n-TiO2), CeO2 (n-CeO2), and ZnO (n-ZnO) and bulk ZnO were chosen for a 4-h exposure study on a model ammonia oxidizing bacterium, Nitrosomonas europaea. n-ZnO displayed the most serious cytotoxicity while n-TiO2 was the least toxic one. The change of cell morphologies, the retardance of specific oxygen...

journal_title：Chemosphere

authors： Yu R,Fang X,Somasundaran P,Chandran K

更新日期：2015-06-01 00:00:00

abstract：:Biological indices, biomarkers (EROD activity, DNA SB, 1-OH pyrene), and organochlorine contaminants were investigated in flounder collected in the Gulf of Gdańsk during March-December 2011 to describe their seasonal variability and interrelations. Univariate and multivariate statistics were used to evaluate the relat...

journal_title：Chemosphere

authors： Kopko O,Dabrowska H

更新日期：2018-03-01 00:00:00

abstract：:The physico-chemical characteristics of granulated sludge lead us to develop its use as a packing material in air biofiltration. Then, the aim of this study is to investigate the potential of unit systems packed with this support in terms of ammonia and hydrogen sulfide emissions treatment. Two laboratory scale pilot ...

journal_title：Chemosphere

authors： Malhautier L,Gracian C,Roux JC,Fanlo JL,Le Cloirec P

更新日期：2003-01-01 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

authors： Harmon HJ

更新日期：2006-05-01 00:00:00

abstract：:Aqueous solutions of selected polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were prepared using a generator column and exposed to UV (300 nm) light in the laboratory and to sunlight in an outdoor environment. In the laboratory, additional exposures were also carried out using 60% ...

journal_title：Chemosphere

authors： Kim M,O'Keefe PW

更新日期：2000-09-01 00:00:00

abstract：:The continuous production of plant wastes and heavy metal pollution of waters have become widespread unavoidable challenges. Reutilization of plant wastes to treat toxic metal-contaminated water is an eco-friendly way to simultaneously solve these problems. Herein, three cake-like biosorbents were synthesized from tea...

journal_title：Chemosphere

authors： Wang N,Qiu Y,Hu K,Huang C,Xiang J,Li H,Tang J,Wang J,Xiao T

更新日期：2021-03-01 00:00:00

abstract：:Naphthenic acids (NAs), a class of structurally diverse carboxylic acids with often complex ring structures and large aliphatic tail groups, are important by-products of many petrochemical processes including the oil sands mining activity of Northern Alberta. While it is evident that NAs have both acute and chronic ha...

journal_title：Chemosphere

authors： Johnston CU,Clothier LN,Quesnel DM,Gieg LM,Chua G,Hermann PM,Wildering WC

更新日期：2017-02-01 00:00:00

abstract：:Na-A zeolite (Z-S1) was synthesized from scoria found on Jeju Island, Korea using the fusion/hydrothermal method. The influences of NaOH/scoria ratio, SiO2/Al2O3 molar ratio, and particle sizes on the synthesis of zeolite were studied by analyzing crystals morphology and crystallinity. According to XRD analysis, it wa...

journal_title：Chemosphere

authors： Lee MG,Park JW,Kam SK,Lee CH

更新日期：2018-09-01 00:00:00

abstract：:Release of 3,3'-dichlorobenzidine (DCB), an intermediate in dye manufacturing processes, is of environmental concern due to its carcinogenic nature. An 11-year field study has been conducted to elucidate the fate and behavior of DCB and its congeners in the Lake Macatawa (Holland, MI, USA) sediment-water system. The s...

journal_title：Chemosphere

authors： Harden J,Donaldson FP,Nyman MC

更新日期：2005-02-01 00:00:00

abstract：:Nanostructured highly porous 3D-Ti/Sb-SnO2-Gr electrode, based on 3D porous graphene hydrogel was fabricated via a fast-evaporation technique through layer by layer (LBL) deposition. The 3D pores are uniformly distributed on the high fidelity of substrate with pore sizes of 7-12 nm, as confirmed by SEM analysis. Compa...

journal_title：Chemosphere

authors： Asim S,Zhu Y,Rana M,Yin J,Shah MW,Li Y,Wang C

更新日期：2017-02-01 00:00:00

abstract：:When applied to soils, it is unclear whether and how biochar can affect soil nutrients. This has implications both to the availability of nutrients to plants or microbes, as well as to the question of whether biochar soil amendment may enhance or reduce the leaching of nutrients. In this work, a range of laboratory ex...

journal_title：Chemosphere

authors： Yao Y,Gao B,Zhang M,Inyang M,Zimmerman AR

更新日期：2012-11-01 00:00:00

abstract：:To investigate the regional cycle of aerosols and their ionic constituents, three field intensive campaigns were conducted during fall and winter of 1997 and spring of 1998. The concentrations of most ionic species were found to decrease significantly across fall, winter, and spring such that the sum for all cation (a...

journal_title：Chemosphere

authors： Kim KH,Lee M,Lee G,Kim YP,Youn YH,Oh JM

更新日期：2002-07-01 00:00:00

abstract：:Some environmental monitoring programs have reported increasing levels of certain polybrominated diphenyl ether (PBDE) isomers in aquatic biota and in human breast milk. The commercial PBDE products are known as penta-, octa-, and deca-brominated diphenyl ethers (PeBDE, OBDE and DBDE, respectively). Aside from the cur...

journal_title：Chemosphere

authors： Wenning RJ

更新日期：2002-02-01 00:00:00

abstract：:Metal oxide nanomaterials have exhibited toxicity to a variety of aquatic organisms, especially microbes and invertebrates. To date, few studies have evaluated the toxicity of metal oxide nanomaterials on aquatic vertebrates. Therefore, this study examined effects of ZnO, TiO(2), Fe(2)O(3), and CuO nanomaterials (20-1...

journal_title：Chemosphere

authors： Nations S,Wages M,Cañas JE,Maul J,Theodorakis C,Cobb GP

更新日期：2011-05-01 00:00:00

abstract：:Ogale community in Rivers State, Nigeria is characterized by crude-oil contamination of its land resources. The present study aimed to evaluate the health risk and metal (Cd, Pb, Zn, Cr, and Ni) contamination level of the vegetable (Telfairia occidentalis), snail (Achatina achatina) and the catfish (Clarias gariepinus...

journal_title：Chemosphere

authors： Abarikwu SO,Essien EB,Iyede OO,John K,Mgbudom-Okah C

更新日期：2017-10-01 00:00:00