Showing 1-30 of 42 resultados for "291773"
Rosanne Slingsby et al.
Journal of chromatographic science, 47(7), 523-528 (2009-09-24)
This paper presents the determination of nine haloacetic acids (HAAs) in high ionic strength, treated effluent waters using an ion chromatography-electrospray ionization-tandem mass spectrometry (IC-ESI-MS-MS) method with internal standards and discussions of each of the method parameters. Data is also...
Tadafumi Horisaki et al.
The Journal of general and applied microbiology, 57(5), 277-284 (2011-12-06)
Five Burkholderia strains (CL-1, CL-2, CL-3, CL-4, and CL-5) capable of degrading monochloroacetic acid (MCA) were isolated from activated sludge or soil samples gathered from several parts of Japan. All five isolates were able to grow on MCA as the...
Shishuai Gao et al.
Polymers, 12(3) (2020-03-15)
In this study, corncob residue (CR) valorization was simply and efficiently realized via carboxymethylation, and its enhanced performance as fillers in urea-formaldehyde (UF) resin was investigated. The structures of corncob residue and carboxymethylated derivative were analyzed by nuclear magnetic resonance...
Alicia Baldessari
Methods in molecular biology (Clifton, N.J.), 861, 445-456 (2012-03-20)
The application of lipases as catalysts in the synthesis of an intermediate of alfuzosin and lapyrium chloride is described. In the first case, the one-pot procedure to obtain the intermediate involves the treatment of tetrahydrofuroic acid with ethanol in the...
Patrick Levallois et al.
Epidemiology (Cambridge, Mass.), 23(2), 267-276 (2012-02-10)
There is concern about possible effects of disinfection by-products on reproductive outcomes. The purpose of this study was to evaluate the association between maternal exposure to chlorination by-products and the risk of delivering a small for-gestational-age (SGA) neonate. We conducted...
Xuchun Li et al.
Environmental science & technology, 46(13), 7342-7349 (2012-06-12)
Most halogenated organic compounds (HOCs) are toxic and persistent, and their efficient destruction is currently a challenge. Here, we proposed a sulfite/UV (253.7 nm) process to eliminate HOCs. Monochloroacetic acid (MCAA) was selected as the target compound and was degraded...
Michael J Plewa et al.
Environmental and molecular mutagenesis, 51(8-9), 871-878 (2010-09-15)
The haloacetic acids (HAAs) are disinfection by-products (DBPs) that are formed during the disinfection of drinking water, wastewaters and recreational pool waters. Currently, five HAAs [bromoacetic acid (BAA), dibromoacetic acid (DBAA), chloroacetic acid (CAA), dichloroacetic acid (DCAA), and trichloroacetic acid...
Khalid Alhooshani et al.
Talanta, 86, 109-113 (2011-11-09)
For the first time, haloacetic acids and aromatic acetic acids were extracted from wastewater samples using electromembrane extraction (EME). A thin layer of toluene immobilized on the walls of a polypropylene membrane envelope served as an artificial supported liquid membrane...
Xianbin Su et al.
BMC microbiology, 12, 267-267 (2012-11-22)
Acetate is a commonly used substrate for biosynthesis while monochloroacetate is a structurally similar compound but toxic and inhibits cell metabolism by blocking the citric acid cycle. In Burkholderia species MBA4 haloacetate was utilized as a carbon and energy source...
Chun-Hung Chen et al.
Toxicology, 303, 72-82 (2012-10-30)
Chloroacetic acid (CA), a toxic chlorinated analog of acetic acid, is widely used in chemical industries as an herbicide, detergent, and disinfectant, and chemical intermediates that are formed during the synthesis of various products. In addition, CA has been found...
Serena Randazzo et al.
Journal of hazardous materials, 192(3), 1555-1564 (2011-07-26)
Acidic aqueous solutions of the chlorinated aliphatic hydrocarbons 1,2-dichloroethane (DCA) and 1,1,2,2-tetrachloroethane (TCA) have been treated by the electro-Fenton (EF) process. Bulk electrolyses were performed at constant current using a BDD anode and an air diffusion cathode able to generate...
Aliev et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 6(7), 1120-1126 (2000-04-29)
The thermally induced solidstate polymerization reactions in sodium chloroacetate and sodium bromoacetate, leading to poly(hydroxyacetic acid) (polyglycolide) and NaCl and NaBr, respectively, were studied by isothermal in situ solid-state NMR spectroscopy at 120, 130 and 140 degrees C with a...
[Investigation on coal work's production use of chloroacetic acid in one province].
Ying Bai et al.
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 28(10), 781-782 (2010-12-04)
Wang Yanli et al.
Carbohydrate research, 344(13), 1764-1769 (2009-08-12)
Carboxymethyl starch (CMS) was obtained as a product of the reaction of starch and monochloroacetic acid (MCA) in the presence of sodium hydroxide. The influence of the molar ratio of NaOH/AGU, the molar ratio of MCA/AGU, the reaction time, reaction...
Tien-Hui Lu et al.
Chemico-biological interactions, 225, 1-12 (2014-12-03)
Chloroacetic acid (CA), a chlorinated analog of acetic acid and an environmental toxin that is more toxic than acetic, dichloroacetic, or trichloroacetic acids, is widely used in chemical industries. Furthermore, CA has been found to be the major disinfection by-products...
Lalisa Bunmechimma et al.
Carbohydrate polymers, 240, 116215-116215 (2020-06-02)
The objective of this work was to prepare functionalized cellulose fiber from sugar cane leaf (SCF) used to produce novel biomaterial. The SCF was treated with chloroacetic acid and sodium hydroxide (NaOH) to produce a modified cellulose fibre (MSCF). At...
Mengmeng Chang et al.
Journal of separation science, 42(3), 744-753 (2018-11-30)
Employing immobilized metal-ion affinity chromatography and magnetic separation could ideally provide a useful analytical strategy for purifying His-tagged protein. In the current study, a facile route was designed to prepare CMPEI-Ni2+ @SiO2 @Fe3 O4 (CMPEI=carboxymethylated polyethyleneimine) magnetic nanoparticles composed of...
Christopher S A Sá et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 47(2), 176-183 (2012-01-17)
A solid phase microextraction method was used for the analysis of nine haloacetic acids (HAAs) in water and air (aerosols) from indoor swimming pools (ISPs). The analysis is characterized by derivatization of HAAs to their methyl-esters with dimethyl sulphate, headspace...
Danae Liviac et al.
Mutagenesis, 25(5), 505-509 (2010-06-16)
Chemical disinfection of water generates harmful chemical compounds, known as disinfection by-products (DBPs). One class of DBPs is constituted by haloacetic acids (HAAs), the second major group in prevalence (after trihalomethanes) detected in finished drinking water. In this article, we...
Maike M Schmidt et al.
Neurotoxicity research, 19(4), 628-637 (2010-07-16)
The chlorinated acetates monochloroacetate (MCA), dichloroacetate (DCA), and trichloroacetate (TCA) are generated in water disinfection processes and are formed during metabolic detoxification of industrial solvents such as trichloroethylene. In order to test for consequences of an exposure of brain cells...
Sonia Lefnaoui et al.
Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society, 23(6), 698-711 (2015-12-25)
A pregelatinized starch (PGS) was derivatized with sodium chloroacetate (SCA) in alcoholic medium under alkaline condition to produce carboxymethyl pregelatinized starch (CMPGS) with various degrees of substitution (DS). Influence of the molar ratio of SCA to the glucopyranose units (SCA/GU)...
Ling Zhang et al.
Chemosphere, 248, 126102-126102 (2020-02-13)
A novel adsorbent, the uniform fiber ball (UFB) loaded with polypyrrole (UFB-PPy), was synthesized for Cr(VI) removal from water in this paper. The structure of the UFB and UFB-PPy were characterized by SEM, EDS, FT-IR, BET, XPS and TG. The...
Maria Concetta Bruzzoniti et al.
Environmental science and pollution research international, 19(9), 4176-4183 (2012-04-25)
High concentration of NO (3) (-) in groundwater has raised concern over possible contamination of drinking water supplies. In addition, the formation of haloacetic acids (HAAs) as by-products during disinfection with chlorine-based agents is still a relevant issue, since HAAs...
Omar A Al-Deeb et al.
Arzneimittel-Forschung, 56(1), 40-47 (2006-02-16)
The reaction of 3-(1-adamantyl)-4-substituted-1,2,4-triazoline-5-thiones 3a-g with sodium chloroacetate, in ethanolic sodium hydroxide yielded the corresponding N1-acetic acid derivatives 4a-g. The interaction of 3a-g with ethyl 2-bromopropionate in acetone, in the presence of potassium carbonate, yielded the corresponding N1-ethyl propionate derivatives...
Brendon Y Chua et al.
Molecular pharmaceutics, 9(1), 81-90 (2011-12-14)
It has become increasingly recognized that polymer particle size can have a profound effect on the interactions of particle-based vaccines with antigen presenting cells (APCs) thereby influencing and modulating ensuing immune responses. With the aim of developing chitosan particle-based immunocontraceptive...
Virginie Dulong et al.
Food chemistry, 262, 21-29 (2018-05-13)
Antioxidant and cytocompatible chemically modified polysaccharides and their hydrogels were obtained by a biomimetic approach. For this purpose, carboxymethylpullulan grafted with ferulic acid (CMP-FA) was firstly synthesized with different substitution degrees (DSFA). Their hydrogels were secondly obtained by enzymatic cross-linking...
Ida Fejős et al.
Electrophoresis, 38(15), 1869-1877 (2017-04-06)
In this work, the synthesis, characterization, and chiral capillary electrophoretic study of heptakis-(2,3-di-O-methyl-6-O-carboxymethyl)-β-CD (HDMCM), a single-isomer carboxymethylated CD, are presented. The pH-dependent and selector concentration-dependent enantiorecognition properties of HDMCM were investigated and discussed herein. The enantioseparation was assessed applying a...
Kunkun Tu et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 7(7), 1902897-1902897 (2020-04-11)
The applicability of advanced composite materials with hierarchical structure that conjugate metal-organic frameworks (MOFs) with macroporous materials is commonly limited by their inferior mechanical properties. Here, a universal green synthesis method for the in situ growth of MOF nanocrystals within...
Zhixun Xie et al.
PloS one, 9(4), e94685-e94685 (2014-04-16)
We report a novel electrochemical immunosensor that can sensitively detect avian influenza virus H5 subtype (AIV H5) captured by graphene oxide-H5-polychonal antibodies-bovine serum albumin (GO-PAb-BSA) nanocomposite. The graphene oxide (GO) carried H5-polychonal antibody (PAb) were used as signal amplification materials....
Qian Xu et al.
Huan jing ke xue= Huanjing kexue, 32(7), 1967-1973 (2011-09-20)
Twelve typical nitrogenous organic compounds including herbicides, pesticides, amino acids, industrial products etc in polluted raw water were selected to investigate formation of typical carbonaceous and nitrogenous DBPs during chlorination and chloramination. To indentify the formation mechanism of carbonaceous and...

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