Log in

Relevant bibliographies by topics / Environmental analytical chemistry / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Environmental analytical chemistry.

Dissertations / Theses on the topic 'Environmental analytical chemistry'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Environmental analytical chemistry.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Lafleur, Josiane. "Hybrid microscale analytical methods for environmental analysis." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86503.

Full text

Abstract:

The contamination of natural resources by human activity can have severe socio-economical impacts. Environmental analytical chemistry plays an essential role in the solving of these environmental problems. However, conventional environmental analytical procedures are generally lengthy and necessitate several steps. Hybrid microscale analytical techniques have been developed with the objective of minimizing the number of sample preparation steps, avoiding the use of organic solvents and reducing the size of the samples required for an analysis as well as increasing the speed of analyses.<br>An

APA, Harvard, Vancouver, ISO, and other styles

2

Amat, N. A. S. "Some aspects of the analytical and environmental chemistry of silver." Thesis, University of Reading, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372563.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

OLIVEIRA, BERNADETE FERREIRA DE. "GREEN ANALYTICAL CHEMISTRY: CONTRIBUTIONS TO THE PUC-RIO’S ENVIRONMENTAL AGENDA." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=20268@1.

Full text

Abstract:

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>O objetivo da dissertação é avaliar o potencial do Departamento de Química da PUC-Rio de desenvolver e adotar métodos de Química Analítica Verde, tendo em vista a inserção de um conjunto de ações no escopo da Agenda Ambiental PUC-Rio. No contexto institucional no qual a pesquisa se insere, considera-se que os resultados desta pesquisa terão um grande potencial de aplicação em diversos departamentos da PUC-Rio, em partic

APA, Harvard, Vancouver, ISO, and other styles

4

Marle, Leanne. "Miniaturised analytical systems with chemiluminescence detection for environmental applications." Thesis, University of Hull, 2006. http://hydra.hull.ac.uk/resources/hull:8095.

Full text

Abstract:

This thesis details the use of microfluidic devices and chemiluminescence detection in order to develop a portable method of analysis for measuring chemical species in the environment. Chapter 1 outlines microfluidic technology, including fabrication techniques, fluid manipulation and mixing within the devices. Their advantages for analytical environmental purposes are demonstrated along with a review of their uses in environmental applications. Chemiluminescence detection provides a sensitive method of analysis for measuring chemical species in the environment and chemiluminescence theory and

APA, Harvard, Vancouver, ISO, and other styles

5

Wangkarn, Sunanta. "Development of hyphenated analytical techniques for arsenic speciation in environmental and biological matrices." Thesis, Birkbeck (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342227.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Worrasettapong, Watcharapong. "Ultratrace analysis and speciation studies on trace elements in environmental and biological samples." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269381.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Gillespie, Margaret Josephine. "Dichlorobenzyl alkyl ethers as standards in environmental analysis using gas chromatography." Thesis, University of Stirling, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236048.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Osika, Natalie Ann. "Identification of Candidate Exposure Biomarkers for Toxicants in Complex Environmental Matrices." Thesis, University of Ottawa (Canada), 2011. http://hdl.handle.net/10393/28919.

Full text

Abstract:

The term "biomarker" refers to an indicator employed to monitor the interactions between a xenobiotic and an individual, provide information of an individual's biologic state, or refer to an individual's susceptibility to a xenobiotic, condition or disease. They are currently employed to assess exposure to, or effects from, environmental toxicants. It is important to have biomarkers that can accurately and precisely assess complex mixture exposures, since environmental exposures to single substances rarely occur outside the laboratory setting, and complex exposures are often associated with sp

APA, Harvard, Vancouver, ISO, and other styles

9

Peterman, Paul Herbert. "Evaluation of Human Toenail as a Non-invasive Biomonitoring Matrix for Assessing Human Exposure to Environmental Organic Pollutants by Optimized Sample Prep and GC/HRMS Analysis." Thesis, University of Missouri - Columbia, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13877161.

Full text

Abstract:

<p> Human biomonitoring is an analytical challenge to find environmental organic chemicals of varying polarity, persistency, and potential toxicity in a suitable, ideally non-invasive matrix at ppb levels that are significantly above method blanks. Compared with more traditional matrices of adipose tissue, serum, and urine, toenail clippings samples are non-invasive, compact, can be shipped without refrigeration, stored indefinitely at room temperature, and processed without concerns for biohazards. With both hydrophilic and hydrophobic layers, toenails contain 1-2% lipid, which is several tim

APA, Harvard, Vancouver, ISO, and other styles

10

Vreugdenhil, Andrew J. "Applications of vibrational spectroscopy to inorganic environmental and industrial systems." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34477.

Full text

Abstract:

Environmental and industrial systems have been investigated using vibrational spectroscopy. These applications were chosen to demonstrate the potential of vibrational spectroscopy as a means of obtaining molecular information from either in-situ or model environments in a rapid, convenient manner requiring minimal sample handling. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) has been used to investigated two systems in the area of environmental chemistry. Using the characteristic CO stretching bands of the Mn(CO)$ sb3$ fragment, methylcyclopentadienyl manganese tricarbo

APA, Harvard, Vancouver, ISO, and other styles

11

Venier, Marta. "Investigation of toxic organic chemicals in the environment." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3319902.

Full text

Abstract:

Thesis (Ph. D.)--Indiana University, School of Public and Environmental Science Affairs, 2008.<br>Title from PDF t.p. (viewed May 13, 2009). Source: Dissertation Abstracts International, Volume: 69-08, Section: B, page: 4637. Adviser: Ronald A. Hites.

APA, Harvard, Vancouver, ISO, and other styles

12

Abdel-Mageed, Amal. "Development and mechanistic study of a manganese (111) chemiluminescence sensor for on-line trace environmental and industrial analysis." Thesis, University of Huddersfield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247402.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Howard, Angela L. "Strategies for the analytical determination of thermally labile sulfur-containing environmental pollutants." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/39291.

Full text

Abstract:

Increasing public awareness of toxic moieties in our environment has put pressure on regulatory agencies to improve testing methods so that these harmful agents can be identified and quantitated at lower and lower levels. The main objective of this work was to investigate analytical methodologies that would allow the sensitive, selective determination of pollutants to be routinely possible. Polar, thermally labile sulfur-containing pesticides and pollutants were our focus analytes. This objective was achieved in two ways: 1) the development of supercritical fluid extraction procedures suitable

APA, Harvard, Vancouver, ISO, and other styles

14

Ranawaka, Arachchige Dinusha. "Ion transfer stripping voltammetry method using conductive polymer to low concentration detection of environmental contaminants." Thesis, Arkansas State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10095768.

Full text

Abstract:

<p> Detecting environmental contaminants such as Selective serotonin reuptake inhibitors (SSRIs) and Cr (VI) compounds is essential since they are highly toxic contaminants of many drinking water supplies leading to adverse health effects. Selective serotonin reuptake inhibitors are common antidepressants therapeutics and fluoxetine; Prozac<sup>®</sup>, citalopram; Celexa<sup> ®</sup> and sertraline; Zoloft<sup>®</sup> were successfully detected in this study. Ion transfer stripping voltammetry (ITSV) was applied to detect those as cations at nanomolar concentrations using an inexp

APA, Harvard, Vancouver, ISO, and other styles

15

Grittini, Carina. "Rapid reductive dechlorination of environmentally hazardous aromatic compounds and pesticides." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282335.

Full text

Abstract:

Organochlorine compounds, such as polychlorinated biphenyls (PCBs), pentachlorophenol (PCP), p,p'-DDE and Toxaphene, have been widely used in industry and agriculture for more than fifty years. Although they have served their purpose very effectively and at low cost, many of these compounds have been banned in the United States due to their persistence in the environment and their threat to human health. Their natural resistance to degradation has made organochlorine compounds the target of many studies that have been designed to convert them into less toxic compounds. At present there is not

APA, Harvard, Vancouver, ISO, and other styles

16

Qiu, Li. "PIXE and micro-PIXE studies on the distribution of metal ions in environmental and biological samples." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288804.

Full text

Abstract:

PIXE--Proton Induced X-ray Emission is a novel and powerful tool for non-destructive multi-element analysis with excellent sensitivity. This technique has been applied to several biological and environmental studies at the University of Arizona. The first application reported here is the study of carrot tissue samples, obtained from plants irrigated with uranium, molybdenum, selenium or manganese contaminated water. The carrots were analyzed with PIXE for the concentrations of these elements taken up by the plants from water. The standard addition method along with an added internal standard w

APA, Harvard, Vancouver, ISO, and other styles

17

Paleologou, Michael. "Aryl halides and metabolites : new approaches to quantitation." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74598.

Full text

Abstract:

A novel reaction for the dehalogenation of aryl halides is discussed in terms of its stoichiometry, mechanism, yields and potential for analytical purposes. The active dehalogenation reagent can be prepared through the reaction of molten potassium with polyethylene glycols (MW $>$ 200), in the absence of oxygen, to form the corresponding potassium glycolate, a powerful nucleophilic agent. This reaction is applied to the determination of PCBs in waste oils. Following dechlorination, the reaction sample is analyzed for chloride using a flow-injection analysis system employing a novel thin-layer

APA, Harvard, Vancouver, ISO, and other styles

18

Jones, David Alexander. "Near-infrared spectral imaging as a detection technique for organic materials in porous media." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280479.

Full text

Abstract:

Imaging spectroscopy combines the spatial discrimination of imaging techniques with the chemical information of spectroscopy to form a powerful tool for the study of chemically heterogeneous systems. This work describes the in situ qualitative and quantitative analysis of contaminant transport flow cells and of high-performance thin-layer chromatography (HPTLC) plates by near-infrared imaging spectroscopy. A solid-state, near-infrared imaging spectrometer was constructed for these studies. The spectrometer utilized an imaging quality acousto-optic tunable filter for wavelength selection over

APA, Harvard, Vancouver, ISO, and other styles

19

Liu, Zhijie. "Reductive dehalogenation of chlorinated aliphatic compounds in electrolytic systems." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/283929.

Full text

Abstract:

A series of chlorinated low-molecular-weight alkanes and alkenes was transformed electrolytically at metal cathodes at potentials from -0.3 to -1.4V (vs. SHE). Products included nonchlorinated hydrocarbons and less chlorinated intermediates. Product distributions are highly dependent on cathode material and applied cathode potential. Kinetics was first-order in the concentration of the halogenated targets. The specific first-order rate constants are function of cathode potential, cathode material, solution characteristics, and reactant identify. When transformation kinetics was governed by pol

APA, Harvard, Vancouver, ISO, and other styles

20

Muftikian, Rosy. "Dehalogenation of halogenated aliphatic organic compounds in the presence of the bimetallic system palladized iron." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/288956.

Full text

Abstract:

Saturated and unsaturated chlorinated aliphatic hydrocarbons containing one to three carbons are commonly used as industrial solvents. These solvents are often found as contaminants in groundwater through improper disposal and many of them are carcinogenic. Remediation of groundwater containing these chlorinated compounds is of obvious importance. Methods such as air stripping and carbon adsorption involve the physical transfer of these contaminants onto activated carbon, and that does not diminish their toxicity. Other methods such as U.V. irradiation in the presence of ozone, hydrogen peroxi

APA, Harvard, Vancouver, ISO, and other styles

21

Romeo, Gino Anthony. "Dechlorination of toxic chlorinated compounds." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/289024.

Full text

Abstract:

It was discovered in our laboratory that the bimetallic system palladium on iron (palladized-iron, Pd/Fe) rapidly and completely hydrodechlorinates aqueous solutions of ubiquitous chlorinated aliphatic and aromatic environmental contaminants such as TCE (trichloroethylene), chlorophenols and PCBs (polychlorobiphenyls) at room temperature and atmospheric pressure. When TCE comes in contact with the Pd/Fe surface, it forms ethane as the major gaseous product. Chlorophenols are converted to phenol and PCBs are converted to biphenyl. It was also discovered that through a series of redox reactions

APA, Harvard, Vancouver, ISO, and other styles

22

Krotenberg, Marshall Eric 1962. "Evaluation of the bias associated with the use of a Nafion® dryer in the analyses of certain polar and nonpolar organic compounds." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/291624.

Full text

Abstract:

Recovery rates of certain polar and non-polar volatile organic compounds were evaluated for bias associated with the use of a Nafion® dryer in the analyses of environmental samples. Analyses of dryer inlet verses dryer outlet concentrations of specific compounds were used to assess the extent of Nafion® bias. A select group of 22 polar and 6 non-polar compounds, as well as historical data from other authors was used to develop a stepwise multiple regression model to aid in predicting recovery rates. Specific compound physical parameters used in this model include water solubility, hydrogen bon

APA, Harvard, Vancouver, ISO, and other styles

23

Gogri, Dhara. "Effect of Water Hardness on Adsorption of Lead From Aqueous Solutions Using Douglas Fir Biochar." Thesis, Mississippi State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10606032.

Full text

Abstract:

<p> Biochar was produced from the fast pyrolysis of Douglas fir (DBC). Magnetic biochar (MDBC) was synthesized by mixing aqueous biochar suspensions with an aqueous Fe<sup>3+</sup>/Fe<sup>2+</sup> solution, followed by NaOH treatment, which causes precipitation of magnetite, Fe3O4 onto DBC. The DBC and the resulting MDBC were investigated as potential green adsorbents for lead remediation from the water. The surface chemistry of both chars was examined by SEM, SEM-EDX, TEM, PZC, and surface area measurements. Batch sorption studies were carried out at 25 °C, from pH 2-7 and with adsorbate

APA, Harvard, Vancouver, ISO, and other styles

24

Hoh, Eunha. "Investigation of organochlorine and organobromine contaminants in the atmosphere." [Bloomington, Ind.] : Indiana University, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3204532.

Full text

Abstract:

Thesis (Ph. D.)--Indiana University, School of Public and Environmental Affairs, 2006.<br>Source: Dissertation Abstracts International, Volume: 67-01, Section: B, page: 0156. Adviser: Ronald A. Hites. "Title from dissertation home page (viewed Feb. 22, 2007)."

APA, Harvard, Vancouver, ISO, and other styles

25

Pruyn, Marley. "Qualitative Detection of Selected Designer Drugs and Relevant Metabolites in Environmental Water Samples." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2571.

Full text

Abstract:

Designer drugs are compounds which have been synthetically derived from illicit drugs. After consumption, drugs and their metabolites are introduced into the sewage water which is treated and disposed into the environment. A combined target, suspect and non-target workflow was created to detect designer drugs in environmental water samples. Multiple water samples were spiked with an unknown mixture of drugs and metabolites to assess the efficiency of the method. Samples were collected from sewage influent and effluent pipes, downstream from a sewage outfall and reclaimed water. Analysis was co

APA, Harvard, Vancouver, ISO, and other styles

26

Hua, Wei. "Interfacial Water Organization and Ion Distributions Investigated with Vibrational Sum Frequency Spectroscopy: Answering Fundamental Questions for Environmental Chemistry." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385593745.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Saad, Emily M. "Elemental, isotopic, and particle fingerprinting of dust sources in the San Francisco Peaks, Arizona." Thesis, Northern Arizona University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1537808.

Full text

Abstract:

<p> This study examines dust in the San Francisco Peaks located on the Colorado Plateau of northern Arizona, USA. Sample dusts were collected from potholes on Humphreys Peak (35<sup>o</sup>20'22"N, 111<sup>o</sup>41'42"W) in order to detect exogenous material and constrain dust sources. Bulk dust and local rock were characterized by Sr and Nd isotope fingerprints as well as elemental composition. Sr and Nd isotope ratios were analyzed by MC-ICP-MS; trace element concentrations were analyzed by Q-ICP-MS. Mineralogical analyses were also performed in an effort to characterize individual particle

APA, Harvard, Vancouver, ISO, and other styles

28

Mézin, Laurent C. "Effects of humic acids and salinity on pesticide bioavailability and toxicity as estimated by SPME and toxicity tests." W&M ScholarWorks, 2001. https://scholarworks.wm.edu/etd/1539616775.

Full text

Abstract:

The interactive effects of humic acids (HAs) and salinity on the bioavailability and toxicity of the pesticides chlorpyrifos and 4,4'-dichlorodiphenyltrichloroethane (DDT) were investigated. The effects of various HAs on the toxicity of chlorpyrifos were initially assessed with the chronic MicrotoxRTM test. Environmentally relevant concentrations of Aldrich, Peat, Leonardite and Suwannee River HAs had no significant effect on the toxicity of either chlorpyrifos or copper (Cu), the test's positive control. as reductions in contaminant toxicity had previously been reported for some contaminants

APA, Harvard, Vancouver, ISO, and other styles

29

Palagama, Dilrukshika S. W. "Development of Liquid Chromatography-Mass Spectrometry Methods for Identification and Quantification of Microcystins in Water and Biological Fluids, and their Removal from Water." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544703858711738.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Catlin, Diane M. "DNA Aptamer Confirmation and Utilization for the Cyanotoxin, Cylindrospermopsin." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2552.

Full text

Abstract:

Cyanotoxins are posing an increasing threat to the health of humans and wildlife. Cylindrospermopsin is a cyanotoxin that occurs in warm climates and is harmful when ingested. The toxic effects of CYN can affect multiple organ systems. The effects, coupled with the evidence of a mass contamination of a water supply in Australia, prove that CYN needs to be investigated further. Aptamers have become a desirable method for detection of CYN as a result of an aptamer’s high specificity and the ability to scale up experiments. Aptamers have been designed to bind with a variety of targets, including

APA, Harvard, Vancouver, ISO, and other styles

31

King, Sarah M. "Enhancement in Degradation of Environmental Pollutants: Fenton Degradation of 2,4,6-Trinitrotoluene and Photodegradation of Deepwater Horizon Crude Oil." ScholarWorks@UNO, 2012. http://scholarworks.uno.edu/td/1451.

Full text

Abstract:

Pollution poses serious threats to both the environmental and the organisms that depend on their environment for survival. Due to the toxicity of most contaminants, there is a dire need for remediation of polluted sites. Remediation studies were conducted on two high priority pollutants: 2,4,6-trinitrotoluene (TNT) and crude oil. TNT was the most common explosive used in the 20th century. Continuous contamination has resulted in an urgent need for remediation. Fenton reagent provides an advanced oxidation process that is capable of remediating recalcitrant explosives, such as TNT. One drawback

APA, Harvard, Vancouver, ISO, and other styles

32

Dantas, Elizabeth Sonoda Keiko. "Procedimentos analíticos em determinações multi elementares de particulados do aerossol atmosférico para uso em modelo receptor." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-04092015-100413/.

Full text

Abstract:

O monitoramento da poluição ambiental requer técnicas analíticas confiáveis e efetivas para analisar diferentes níveis de concentração de elementos metálicos. Com este objetivo, foi desenvolvido um método analítico para a determinação de metais presentes (Cd, Co e Cr) no particulado atmosférico, coletados em filtros de celulose, com a introdução direta da amostra sólida utilizando a espectrometria de absorção atômica com forno de grafite (GFAAS). As amostras foram cortadas utilizando um cortador de aço inoxidável com 2 mm de diâmetro e introduzidas no tubo de grafite por meio de pinça de aço i

APA, Harvard, Vancouver, ISO, and other styles

33

Atkinson, Ian E. "Mass Spectrometric Analysis of Environmental Contaminants, Protein Structure and Expression." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1231174291.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Harries, Megan Elizabeth. "Vapor-liquid Equilibria Pertaining to the Study of Alternative Fuels and the Forensic Analysis of Chemical Evidence." Thesis, University of Colorado at Boulder, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10843874.

Full text

Abstract:

<p> Measurement of the vapor-liquid equilibrium (VLE) of fluid mixtures with many components presents a challenge. Data describing such mixtures, like fuels, are important for the development of alternative energy sources and to support forensic science, but there is a lack of suitable instrumentation to provide data with reasonable uncertainty for mixtures with many components. In this thesis, three different techniques for fluid characterization are explored: the advanced distillation curve (ADC), the advanced distillation curve with reflux (ADCR), and PLOT-cryoadsorption. Two pyrolysis fuel

APA, Harvard, Vancouver, ISO, and other styles

35

Guaraldo, Thais Tasso. "Avaliação da performance de eletrodos de filmes finos de Ti/TiO 2 com diferentes tamanhos de nanopartículas na oxidação fotoeletrocatalítica de Índigo Carmim /." Araraquara : [s.n.], 2010. http://hdl.handle.net/11449/97830.

Full text

Abstract:

Resumo: A nanociência e nanotecnologia são campos científico-tecnológicos empenhados em compreender como o controle estrutural da matéria ao nível molecular pode ser utilizado para a preparação de novos materiais com propriedades únicas e exclusivas. Um material muito promissor para aplicações nanotecnológicas é o dióxido de titânio (TiO2). Este trabalho descreve a síntese e caracterização de semicondutores nanoestruturados de TiO2 na forma de material nanoporoso e nanoparticulado pelo método sol-gel usando o tetra-isopropóxido de titânio [Ti(OPri)4] como precursor, empregados como fotoanodos

APA, Harvard, Vancouver, ISO, and other styles

36

Bacani, Vincent J. (Vincent Joseph). "Development of a rapid colourimetric assay for resin and fatty acids in pulp and paper mill effluents." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23253.

Full text

Abstract:

Researchers have linked resin and fatty acids (RFAs) to acute toxicity, especially in thermomechanical and chemithermomechanical pulp and paper mill effluents. Thus, the measurement of total RFAs may be a rapid, inexpensive alternative to standard methods of toxicity monitoring, such as 96-hour rainbow trout testing. Current procedures for the analysis of RFAs typically involve solvent extraction and concentration, derivatization, and analysis by GC, HPLC, or TLC. These procedures are far too expensive, complicated, and time-consuming for implementation at mill sites.<br>This thesis reports th

APA, Harvard, Vancouver, ISO, and other styles

37

Asselin, Julie. "Design of a flow-through extraction cell for rapid determination of toxic metals (arsenic, cadmium, chromium, copper, mercury, lead, tin, zinc) from soils and sediments." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115838.

Full text

Abstract:

The goal of this study was to design, characterize and test a flow-through extraction cell for rapid determination of toxic metals present in soil and sediment samples.<br>Based on a design elaborated by Jean Bouffard, a Teflon cell was first machined, but it appeared to be leaky and hard to disassemble without breaking the fritted glass discs. To overcome these difficulties, a poly ether ether ketone (PEEK) cell was machined and several parts were modified. Even though the shape and seal of the components seemed to be affected when heated, the cell was working at room temperature and proved p

APA, Harvard, Vancouver, ISO, and other styles

38

Silva, Eliana Sousa da. "Desenvolvimento de m sistema de análise por injecção sequencial (sia) para a determinação de vanádio (V) em águas." Dissertação, Faculdade de Farmácia da Universidade do Porto, 2007. http://hdl.handle.net/10216/7532.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Silva, Eliana Sousa da. "Desenvolvimento de m sistema de análise por injecção sequencial (sia) para a determinação de vanádio (V) em águas." Master's thesis, Faculdade de Farmácia da Universidade do Porto, 2007. http://hdl.handle.net/10216/7532.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Rice, Stacie L. "Environmental Analysis of Selected Estrogens and androgens: Applying Ultra-Performance Liquid Chromatography and Combating Matrix Interference." W&M ScholarWorks, 2009. http://www.vims.edu/library/Theses/Rice09.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Wahlen, Raimund. "Development of analytical techniques for the extraction, separation and determination of organometallic and inorganic metal species in environmental and biological matrices." Thesis, Kingston University, 2003. http://eprints.kingston.ac.uk/20722/.

Full text

Abstract:

Existing methodologies for the separation and detection of organotin species by liquid- and gas-chromatography coupled to inductively coupled plasma mass-spectrometry (ICP-MS) have been improved significantly. The LC separation of dibutyltin (DBT), triphenyltin (TPhT) and unidentified species in mussel tissue has been enhanced in terms of peak shape and resolution. GC-ICP-MS detection limits for organotin species are significantly reduced by addition of oxygen or nitrogen to the ICP-MS carrier gas. A comparison of LC-ICP-MS and GC-ICP-MS for the species-specific isotope dilution determination

APA, Harvard, Vancouver, ISO, and other styles

42

Do, Clement. "EVALUATION OF A FILTRATION SORBENT FOR REMEDIATION OF ARSENIC IN GROUNDWATER." CSUSB ScholarWorks, 2017. https://scholarworks.lib.csusb.edu/etd/474.

Full text

Abstract:

A commercially available product, PURA PhosLock, was identified and evaluated for use as a sorbent to remove dissolved arsenic (As) from drinking water. Although marketed as a product to remove phosphate in aquaria, it is composed of iron oxide hydroxide (i.e., FeO(OH)), which is also known to adsorb dissolved As species from water. Arsenic was measured using standard methods and Graphite Furnace Atomic Absorption Spectroscopy. A first rough filtration test was performed to see if the PhosLock adsorbed As well. About 50 g of PhosLock was used to filter 10 L of tap water containing 100 ppb As.

APA, Harvard, Vancouver, ISO, and other styles

43

Dickson, Dionne. "The Effect of Iron Oxide Nanoparticles on the Fate and Transformation of Arsenic in Aquatic Environments." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/858.

Full text

Abstract:

Iron oxides and arsenic are prevalent in the environment. With the increase interest in the use of iron oxide nanoparticles (IONPs) for contaminant remediation and the high toxicity of arsenic, it is crucial that we evaluate the interactions between IONPs and arsenic. The goal was to understand the environmental behavior of IONPs in regards to their particle size, aggregation and stability, and to determine how this behavior influences IONPs-arsenic interactions. A variety of dispersion techniques were investigated to disperse bare commercial IONPs. Vortex was able to disperse commercial hemat

APA, Harvard, Vancouver, ISO, and other styles

44

Guaraldo, Thaís Tasso [UNESP]. "Avaliação da performance de eletrodos de filmes finos de Ti/TiO 2 com diferentes tamanhos de nanopartículas na oxidação fotoeletrocatalítica de Índigo Carmim." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/97830.

Full text

Abstract:

Made available in DSpace on 2014-06-11T19:29:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-19Bitstream added on 2014-06-13T19:38:07Z : No. of bitstreams: 1 guaraldo_tt_me_araiq.pdf: 2620921 bytes, checksum: 7297cc2d2b939c1b94c540469e0d0f8a (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A nanociência e nanotecnologia são campos científico-tecnológicos empenhados em compreender como o controle estrutural da matéria ao nível molecular pode ser utilizado para a preparação de novos materiais com propriedades únicas e exclusivas. Um material muito pr

APA, Harvard, Vancouver, ISO, and other styles

45

Kristovich, Robert Lee. "Chemistry and toxicology of respirable airborne particulates." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1100898370.

Full text

Abstract:

Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xvii, 260 p.; also includes graphics (some col.). Includes bibliographical references (p. 242-260).

APA, Harvard, Vancouver, ISO, and other styles

46

Huettinger, Karl. "Semi-synthetic proteins for catalytic and analytical applications." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33823.

Full text

Abstract:

Proteins have evolved over millions of years to serve a plethora of highly specialized functions in biological systems. Given the enormous diversity in structure and function, it is truly surprising that only 20 different amino acids are utilized as the building blocks of proteins. Furthermore, only a small set of metal cations that are biologically available are used as structural or catalytically active cofactors in proteins, whereas rare metal cations such as platinum, ruthenium or rhodium remain absent. In the 20th century myriad catalysts, based on non-biological transition metals, emerge

APA, Harvard, Vancouver, ISO, and other styles

47

Eriksson, Sune. "Acrylamide in food products : Identification, formation and analytical methodology." Doctoral thesis, Stockholm : Dept of environmental chemistry, Stockholm university, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-700.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Spier, Candace Rae. "The Development and Application of an Antibody-based Biosensor for the Detection of the Petroleum-derived Compounds." W&M ScholarWorks, 2011. https://scholarworks.wm.edu/etd/1539616860.

Full text

Abstract:

Petroleum is one of the most important natural resources, but can also be problematic to environmental and human health. Petroleum is comprised of thousands of compounds, including polycyclic aromatic hydrocarbons (PAHs) and heterocycles, some of which are toxic and/or carcinogenic. Traditional analytical methods for environmental monitoring of low-level PAHs are time-consuming labor-intensive, and often laboratory-bound. Efforts to achieve timely, sensitive, and accurate analysis of PAHs in the field have become a priority for environmental research and monitoring. Antibody-based biosensors a

APA, Harvard, Vancouver, ISO, and other styles

49

Yarnall, Heather A. "Development of a Quantitative Competetive Polymerase Chain Reaction Assay for the Detection and Quantitation of Perkinsus marinus in Oyster Tissues and Environmental Water Samples." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539617741.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Gaylor, Michael O. "Bioavailability of biosolids- and consumer product-associated polybrominated diphenyl ether (PBDE) flame retardants to terrestrial invertebrates." W&M ScholarWorks, 2010. https://scholarworks.wm.edu/etd/1539616662.

Full text

Abstract:

The primary objectives of this research were therefore to evaluate polybrominated diphenyl ether (PBDE) bioavailability to ecologically distinct soil invertebrates exposed to Penta-BDE-treated consumer polyurethane foam (PUF) products and biosolid products with incurred PBDEs. In laboratory bioassays, earthworms (Eisenia fetida) bioaccumulated SigmaPBDEs (47+99+100+183) up to 11,000 mug/kg lipid after 28 days from a mixture of artificial soil and anaerobically-digested sludge biosolid (ADB). Earthworms also bioaccumulated SigmaPBDEs (47+99+100+153+154+183) up to 13,500 and 838,000 mug/kg lipid

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!