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Alfred Antony Christy

Professor

Professor

 
Kontor:
J1060 ( Universitetsveien 25, Kristiansand )

Professor Alfred A. Christy

Field of Expertise: Infrared sSpectroscopy, Mass spectrometry, Analytical Chemistry

Forskning

Forskning i analytisk kjemi. GC og IR spektoscpi.

Undervisning

Kjemi i lærerutdanning og bioingeniørutdanningen

Arbeidserfaring

40 års erfæring i undervisning og forskning i kjemi på universitets nivå

Faglige interesser

Undervisning i lærerutdanning

Prosjekter

Naturfagdidaktikk

Fettsyreanalyse i matoljer, CLA fettsyrer i dyr. 

Cis-trans isomeriseringen i fettsyrer. Mekanism 

kjemisk sammenstning av cement

Kvantifisering av kalsium hydroksid i cement blandinger

Vitenskapelige publikasjoner

  • Christy, Alfred Antony (2019). Surface Functionality and Water adsorption studies of alpha aluminium (111) oxide nanoparticles by Near Infrared Spectroscopy. Key Engineering Materials. ISSN: 1013-9826. 803 (104). s 104 - 108. doi:10.4028/www.scientific.net/KEM.803.104.
  • Christy, Alfred Antony (2019). Water Adsorption Properties of Titanium(IV) Oxide Embedded in Multiwalled Carbon Nanotubes (CNT). Key Engineering Materials. ISSN: 1013-9826. 803s 181 - 186.
  • Christy, Alfred Antony (2018). Effect of UV Irradiation on Conjugated Linoleic Acid (9c 11t and 10t 12c). Journal of Chemical and Pharmaceutical Research. ISSN: 0975-7384. 10 (8). s 17 - 24.
  • Prathumsuwan, Thitarat; Christy, Alfred Antony; Thorstensen, Rein Terje (2018). Hydration Chemistry of Cement Studied by Near Infrared Spectroscopy. Key Engineering Materials. ISSN: 1013-9826. 765 KEMs 309 - 313. doi:10.4028/www.scientific.net/KEM.765.309.
  • Sangpongpitthaya, Tanyapa; Christy, Alfred Antony; Thorstensen, Rein Terje (2018). Quantitative Determination of Calcium Hydroxide by using Near Infrared Spectroscopy. Key Engineering Materials. ISSN: 1013-9826. 765s 300 - 304. doi:10.4028/www.scientific.net/KEM.765.300.
  • Christy, Alfred Antony (2017). An Insight into the Isomerization Chemistry of Methyl Linolenate. Journal of Chemical and Pharmaceutical Research. ISSN: 0975-7384. 9 (9). s 140 - 145.
  • Christy, Alfred Antony (2017). Changes in Unsaturated Fatty Acid Profiles of Some Vegetable Oils during Frying at Medium Frying Temperature. Journal of Chemical and Pharmaceutical Research. ISSN: 0975-7384. 9 (10). s 223 - 226.
  • Angkuratipakorn, Thamonwan; Singkhonrat, Jirada; Christy, Alfred Antony (2017). Comparison of Water Adsorption Properties of Cellulose and Cellulose Nanocrystals Studied by Near-Infrared Spectroscopy and Gravimetry. Key Engineering Materials. ISSN: 1013-9826. 735 KEMs 235 - 239. doi:10.4028/www.scientific.net/KEM.735.235.
  • Christy, Alfred Antony; Rifla, Raziq (2017). Determination Of Kinetic Parameters For The Thermally Induced Isomerization Of Methyl Linolenate. Advances in Natural and Applied Sciences. ISSN: 1995-0772. 11 (8). s 604 - 612.
  • Christy, Alfred Antony; Soonthenhut, Siraporn (2017). Water Structure in Proteins in Solid State Studied by Near Infrared Spectroscopy. Key Engineering Materials. ISSN: 1013-9826. 735 KEMs 168 - 172. doi:10.4028/www.scientific.net/KEM.735.168.
  • Christy, Alfred Antony (2016). Heat induced synthesis of linolenic acid isomers-A reference standard. Advances in Natural and Applied Sciences. ISSN: 1995-0772. 10 (17). s 19 - 22.
  • Christy, Alfred Antony; Arachchi, Subashini L. (2016). Thermally Induced Cis-Trans Isomerisation in Trilinolein Studied by Infrared Spectroscopy and Gas Chromatography. Advances in Natural and Applied Sciences. ISSN: 1995-0772. 10 (4). s 168 - 176.
  • Christy, Alfred Antony; Fernando, N.R. (2016). Thermally induced chemical reactions in castor oil studied by infrared spectroscopy and gas chromatography: Determination of activation energy for the dehydration of ricinoleic acid. Advances in Natural and Applied Sciences. ISSN: 1995-0772. 10 (13). s 146 - 156.
  • Christy, Alfred Antony (2016). Water adsorption properties of free and dehydrated β-cyclodextrin studied by near infrared spectroscopy and gravimetry. Key Engineering Materials. ISSN: 1013-9826. 689s 143 - 147. doi:10.4028/www.scientific.net/KEM.689.143.
  • Christy, Alfred Antony (2015). Adsorption and Dehydration of Water Molecules from α, β and γ Cyclodextrins-A study by TGA analysis and gravimetry. Advanced Materials Research. ISSN: 1022-6680. 1120-1121s 886 - 890. doi:10.4028/www.scientific.net/AMR.1120-1121.886.
  • Christy, Alfred Antony (2015). Insights into the Chemistry of Adsorption of Water Molecules by Cyclodextrins as Studied by Near Infrared Spectroscopy. Advances in Natural and Applied Sciences. ISSN: 1995-0772. 9 (14). s 7 - 13.
  • Christy, Alfred Antony (2015). The Adsorption of Water Molecules on Titanium (iv) Oxide Surface as Studied by Near Infrared Spectroscopy. Advances in Natural and Applied Sciences. ISSN: 1995-0772. 9 (14). s 14 - 19.
  • Christy, Alfred Antony (2014). Adsorption of alcohols onto zinc selenide (ZnSe) crystal surface. Advanced Materials Research. ISSN: 1022-6680. 1035s 277 - 280. doi:10.4028/www.scientific.net/AMR.1035.277.
  • Christy, Alfred Antony (2014). Comparison of water adsorption characteristics of oligo and polysaccharides of α-glucose STUDIED by near infrared spectroscopy. Advanced Materials Research. ISSN: 1022-6680. 1035s 476 - 482. doi:10.4028/www.scientific.net/AMR.1035.476.
  • Christy, Alfred Antony; Barth, Tanja; Francis, George William (2014). Preliminary photochemical studies of fluorene in various aqueous media. AMERICAN JOURNAL OF SCIENTIFIC AND INDUSTRIAL RESEARCH. ISSN: 2153-649X. 5s 97 - 103. doi:10.5251/ajsir.2014.5.3.97.103.
  • Christy, Alfred Antony (2014). The Nature of Silanol Groups on the Surfaces of Silica, Modified Silica and Some Silica Based Materials. Advanced Materials Research. ISSN: 1022-6680. 998-999s 3 - 10. doi:10.4028/www.scientific.net/AMR.998-999.3.
  • Christy, Alfred Antony (2013). Chemistry of desiccant properties of carbohydrate polymers as studied by near-infrared spectroscopy. Industrial & Engineering Chemistry Research. ISSN: 0888-5885. 52 (12). s 4510 - 4516. doi:10.1021/ie302199k.
  • Christy, Alfred Antony (2013). Near Infrared Spectroscopic Study on the Adsorption of Methanol on Silica Gel. Advanced Materials Research. ISSN: 1022-6680. 650s 150 - 155. doi:doi:10.4028/www.scientific.net/AMR.650.150.
  • Christy, Alfred Antony (2013). The nature of rest silanol groups on the surfaces of silica based solid phase extraction materials. Advanced Materials Research. ISSN: 1022-6680. 650s 66 - 71. doi:doi:10.4028/www.scientific.net/AMR.650.66.
  • Christy, Alfred Antony; Nkansah, Marian Asantewah; Barth, Tanja (2012). Catalytic oxidation and reduction of polycyclic aromatic hydrocarbons (PAHs) present as mixtures in hydrothermal media. Polycyclic aromatic compounds (Print). ISSN: 1040-6638. 32 (3). s 408 - 422. doi:10.1080/10406638.2012.663451.
  • Christy, Alfred Antony (2012). Effect of Heat on the Adsorption Properties of Silica Gel. International Journal of Engineering and Technology. ISSN: 1793-8236. 4 (4). s 484 - 488.
  • Francis, George William; Christy, Alfred Antony; Øygarden, Jostein (2012). Pyrolytic formation of pyrolytic aromatic hydrocarbons from sesquiterpenes. Food Chemistry. ISSN: 0308-8146. 135 (3). s 1316 - 1322. doi:10.1016/j.foodchem.2012.06.033.
  • Nkansah, Marian Asantewah; Christy, Alfred Antony; Barth, Tanja; Francis, George William (2012). The use of lightweight expanded clay aggregate (LECA) as sorbent for PAHs removal from water. Journal of Hazardous Materials. ISSN: 0304-3894. 217s 360 - 365. doi:10.1016/j.jhazmat.2012.03.038.
  • Christy, Alfred Antony (2011). Effect of hydrothermal treatment on adsorption properties of silica gel. Industrial & Engineering Chemistry Research. ISSN: 0888-5885. 50 (9). s 5543 - 5549. doi:10.1021/ie1018468.
  • Christy, Alfred Antony (2011). Near infrared spectroscopic characterisation of surface hydroxyl groups on hydrothermally treated silica gel. International Journal of Chemical and Environmental Engineering. ISSN: 2078-0737. 2 (1). s 27 - 32.
  • Christy, Alfred Antony; Svendsen, Monica Lian; Francis, George William (2011). Pyrolytic formation of polyaromatic hydrocarbons from steroid hormones. Food Chemistry. ISSN: 0308-8146. 124 (4). s 1466 - 1472. doi:10.1016/j.foodchem.2010.07.109.
  • Bobon, Miroslav; Christy, Alfred Antony; Kluvanec, Daniel; Illusova, Ludmilla (2011). State of water molecules and silanol groups in opal minerals: a near infrared spectroscopic study of opals from Slovakia. Physics and chemistry of minerals. ISSN: 0342-1791. 38 (10). s 809 - 818. doi:10.1007/s00269-011-0453-0.
  • Nkansah, Marian Asantewah; Christy, Alfred Antony; Barth, Tanja (2011). The use of anthracene as a model compound in a comparative study of hydrous pyrolysis methods for industrial waste remediation. Chemosphere. ISSN: 0045-6535. 84 (4). s 403 - 408. doi:10.1016/j.chemosphere.2011.03.061.
  • Christy, Alfred A. (2010). Isomerization of 9c11t/10t12c CLA in Triacylglycerols. Lipids. ISSN: 0024-4201. 45 (8). s 733 - 741. doi:10.1007/s11745-010-3452-x.
  • Christy, Alfred A. (2010). New insights into the surface functionalities and adsorption evolution of water molecules on silica gel surface: A study by second derivative near infrared spectroscopy. Vibrational Spectroscopy. ISSN: 0924-2031. 54 (1). s 42 - 49. doi:10.1016/j.vibspec.2010.06.003.
  • Christy, Alfred A. (2010). The Fate of Phthalates in Surface Waters During Humus Removal by Precipitation. International Journal of Arts and Sciences. ISSN: 1557-718X. 3 (9). s 11 - 22.
  • Christy, Alfred A. (2010). Thermally induced Isomerisation kinetics of the 9c11t and 10t12c Conjugate Linoleic Acids in triacylglycerols as studied by FT-IR spectrometry aided by gas chromatography. The Open Spectroscopy Journal. ISSN: 1874-3838. 4s 41 - 48.
  • Andersen, Dag Olav; Christy, Alfred A. (2010). Water Chemistry in the Confluence Zone Downstream a Limestone Treated Lake and an Acid Tributary: Principal Component Analyses Including Warm and Cold Winters and an Episode High in Sea-Salts. International Journal of Arts and Sciences. ISSN: 1557-718X. 3 (9). s 23 - 35.
  • Christy, Alfred A. (2009). Evidence in the formation of conjugated linoleic acids from thermally induced 9t12t linoleic acid: a study by gas chromatography and infrared spectroscopy. Chemistry and Physics of Lipids. ISSN: 0009-3084. 161 (2). s 86 - 94. doi:10.1016/j.chemphyslip.2009.07.002.
  • Christy, Alfred A.; Zhanfeng, Xu; Harrington, Peter de B. (2009). Thermal degradation and isomerisation kinetics of triolein studied by infrared spectrometry and GC-MS combined with chemometrics. Chemistry and Physics of Lipids. ISSN: 0009-3084. 158 (1). s 22 - 31. doi:10.1016/j.chemphyslip.2008.12.002.
  • Christy, Alfred A. (2009). Thermal induction of 9t12t linoleic acid: A new pathway for the formation of Conjugated Linoleic Acids. International Journal of Engineering and Technology. ISSN: 1793-8236. 1 (4). s 330 - 332.
  • Christy, Alfred A. (2009). Thermally Induced Isomerization of Trilinolein and Trilinoelaidin at 250 A degrees C: Analysis of Products by Gas Chromatography and Infrared Spectroscopy. Lipids. ISSN: 0024-4201. 44 (12). s 1105 - 1112. doi:10.1007/s11745-009-3363-x.
  • Christy, Alfred A. (2008). Quantitative determination of surface area of silica gel particles by near infrared spectroscopy and chemometrics. Colloids and Surfaces A: Physicochemical and Engineering Aspects. ISSN: 0927-7757. 322 (1-3). s 248 - 252. doi:10.1016/j.colsurfa.2008.03.021.
  • Gjessing, Egil T; Steiro, Christine; Becher, Georg; Christy, Alfred A. (2007). Reduced analytical availability of polychlorinated biphenyls (PCB's) in colored surface water. Chemosphere. ISSN: 0045-6535. 66 (4). s 644 - 649. doi:10.1016/j.chemosphere.2006.07.086.
  • Christy, Alfred A. (2006). Infrared Spectroscopy and Partial Least Square Calibration in the Simultaneous Quantification of Isolated trans and Conjugated Linoleic Acids. Lipid Analysis and Lipidomics: New Techniques and Applications. The American Oil Chemists' Society. faglig_bok_forlag. s 135 - 154.
  • Christy, Alfred A.; Kvalheim, Olav (2006). Latent-variable analysis of multivariate data in infrared spectrometry. Near-Infrared Spectroscopy in Food Science and Technology. Wiley-VCH Verlagsgesellschaft. s 145 - 162.
  • Christy, Alfred A.; Egeberg, Per K. (2006). Quantitative determination of saturated and unsaturated fatty acids in edible oils by infrared spectroscopy and chemometrics. Chemometrics and Intelligent Laboratory Systems. ISSN: 0169-7439. 82 (01.feb). s 130 - 136.
  • Christy, Alfred A. (2006). Redusert analytisk tilgjengelighet for PCB i humusfarget vann. Vann. ISSN: 0042-2592. 2s 118 - 126.
  • Christy, Alfred A.; Guo, JX; Liu, Quanru; Li, MY; Wu, ZL (2006). The effect of alkali on crude oil/water interfacial properties and the stability of crude oil emulsions. Colloids and Surfaces A: Physicochemical and Engineering Aspects. ISSN: 0927-7757. 273 (01.mar). s 213 - 218.
  • Christy, Alfred A. (2005). Partial Least Squares Processing of Near-Infrared Spectra for Discrimination and Quantification of Adulterated Olive Oils. Spectroscopy Letters. ISSN: 0038-7010. 38s 839 - 851.
  • Christy, Alfred A.; Egeberg, Per K. (2005). Quantitative determination of surface silanol groups in silicagel by deuterium exchange combined with infrared spectroscopy and chemometrics. The Analyst. ISSN: 0003-2654. 130 (5). s 738 - 744.
  • Li, MY; Lin, MQ; Wu, ZL; Christy, Alfred A. (2005). The influence of NaOH on the stability of paraffinic crude oil emulsion. Fuel. ISSN: 0016-2361. 84s 183 - 187.
  • Christy, Alfred A. (2001). Modern Fourier Transform Infrared Spectroscopy. ISBN: 444500448. Elsevier. s 376.
  • Christy, Alfred Antony (2019). The importance and determination of calcium hydroxide in cement by Near infrared spectroscopy.
  • Christy, Alfred Antony (2019). Dehydration of cement studied by Therogravimetric analysis.
  • Christy, Alfred Antony (2018). Applications of NIR spectroscopy in Material Science.
  • Christy, Alfred Antony (2018). Importance of calcium hydroxide or its Dehydration studied by TGA analysis.
  • Christy, Alfred Antony; Thorstensen, Rein Terje (2018). Quantitative determination of calcium hydroxide in concrete by near infrared spectroscopy.
  • Christy, Alfred Antony (2018). Applications of Near Infrared Spectroscopy.
  • Christy, Alfred Antony (2018). operational principles of spectroscopic techniques.

Sist endret: 14.03.2019 18:03

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