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Browsing Volume 32 by Title

Browsing Volume 32 by Title

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  • Calibration of Shahid's Analytical Method for Adulterated Zn-EDTA Fertilizers by Ion Chromatography and Atomic Absorption Spectroscopy 
    MUHAMMAD SALIK, Ali Khan; MUHAMMAD AKRAM; SHAHID MAHMOOD MIAN; RANA JAVAID IQBAL; MUHAMMAD AKRAM QAZI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Chelated zinc fertilizers are usually recommended in calcareous alkaline soils to provide Zn nutrition in order to prevent possible Zn precipitation. In Punjab (Pakistan), Zn.EDTA products are being manufactured, and ...
  • Capillary Gas Chromatographic Determination of Dopamine by Pre-column Derivatization Method using Trifluoroacetylacetone as Derivatizing Reagent 
    MUHAMMAD YAR KHUHAWAR; LIAQUAT ALI ZARDARI; SUBHAN ALI MAJIDANO; ASGHAR ALI MAJIDANO (Karachi: The Chemical Society of Pakistan, 2010-12-13)
    Capillary gas chromatographic separation of putrescine (Pu), cadaverine (Cd), dopamine (DA) and octopamine (OA) as derivatives of trifluoroacetylacetone (FAA) has been carried out using a column HP-5 (30 m × 0.32 mm id), ...
  • Catalytic Conversion of Waste Inner Tube Rubber (Isobutylene Isoprene) into Valuable Products 
    FAZAL MABOOD; MOHAMMAD RASUL JAN; JASMIN SHAH; FARAH JABEEN; SULTAN ALAM; MOHAMMAD SADIQ; JAVID HUSSAIN; ZAHID HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-12-11)
    Waste inner tube rubber (isobutylene isoprene) represents a source of energy and valuable chemical products. Waste inner tube rubbers were pyrolysed catalytically in a batch reactor under atmospheric pressure. Calcium ...
  • Catalytic Conversion of Waste Low Density Polyethylene into Valuable Products 
    FAZAL MABOOD; JASMIN SHAH; MOHAMMAD RASUL JAN; ZAHID HUSSAIN; FARAH JABEEN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Waste low density polyethylene (LDPE) from household and industries are recognized to be a major environmental problem. LDPE represent a source of energy and valuable chemical products. Waste LDPE were pyrolysed catalytically ...
  • Cathodic Voltammetry of Nitrobenzene at Titanium in Micellar Solution 
    IMAM-UL-HAQUE; MUQADDAS TARIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-06-04)
    The present study relates to electro-reduction of nitrobenzene in the presence of miceller aqueous solution of sodium dodecyl sulphate at titanium cathode, using cyclic voltammetric and titanium etching methods in a ...
  • Characteristic Study of Assimilable Organic Carbon (AOC) Formation Potential in Drinking Water 
    JI HOON KIM; YOUNG JU KIM; DAE SUNG LEE; AHIR IMRAN QURESHI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-04-03)
    Characteristic study of assimilable organic carbon formation potential (AOCFP) at different reaction conditions of ozonation using model raw water containing humic substances and natural source drinking water was conducted. ...
  • Characterization of Amorphous Silica Obtained from KMn04 Treated Rice Husk 
    JAVED, SYED HASSAN; SHAHID NAVEED; NAVEED RAMZAN; NADEEM FEROZE; MUHAMMAD ZAFAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Rice husk (RH) is available in large quantities in many rice producing areas of Pakistan. The use of rice husk as a fuel in heat generating systems adds to environmental pollution. Rice husk contains approximately 20 % ...
  • Characterization of Beta Zeolites by X-Ray Diffraction, Scanning Electron Microscope, and Refractive Index Techniques 
    SHER AKBAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Lithium and sodium beta zeolites (Li-BEA, Na-BEA) by aqueous ion exchange at 65 °C and protonic beta zeolite (H-BEA) by deammoniation of NH₄-BEA at 540 °C were prepared. The crystallinity and morphology of all the samples ...
  • Characterization of Essential Oil of Local Varieties of Citrus paradisi Peel 
    MUHAMMAD NAEEM KHAN; SHAHID MAHMUD; IFTlKHAR HUSSAIN BALOCH; SALMA REHMAN; MUNAWAR ALIMUNAWAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    The essential oil from Citrus paradisi peel was analyzed for its chemical composition. The GC and GC/MS studies of the essential oil revealed the presence of 23 constituents; out of which 15 constituents were identified ...
  • Characterization of Foot-and-Mouth Disease Virus's Viral Peptides with LC-ESI-MS 
    ZAFER OMER OZDEMIR; MESUT KARAHAN; ERDEM KARABULUT; ZEYNEP MUSTAFAEVA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Peptides and proteins play a central role in numerous biological and physiological processes in living organisms. Viral capsid peptides are part of the viruses' outer shell of genetic materials. Viruses are recognized by ...
  • Chemical Activation of Bagasse Ash in Cementitious System and its Impact on Strength Development 
    NOOR-UL-AMIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The production of bagasse ash from sugar mills in a great quantity has become one of the environmental problem, but its use in cement mortar that provided a satisfactory solution to problems that associated with waste ...
  • Chemical Oxygen Demand (COD) Fractions Characterization of Karachi Metropolitan Wastewater 
    YASMIN NERGIS; MUGHAL SHARIF; M. AFZAL FAROOQ (Karachi: The Chemical Society of Pakistan, 2010-12-03)
    To prove the hypothesis that the inert products are given to environment due to biological degradation of substrate in activated sludge operations. This study was design to investigate the inert fractions of chemical oxygen ...
  • Cinerascenone, A New Flavonoid from Vernonia cinerascens 
    IRSHAD AHMAD; BASHIR AHMAD, CHAUDHARY; KHALID HUSSAIN, JANBAZ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Cinerascenone 1 [7-{(4-hydroxybenzoyl)chrysoeriol}] a new flavonoid along with quercetin and 3'-methylquercetin have been isolated from the methanolic extract of the aerial parts of Vernonia cinerascens. The structures ...
  • Coatings of Poly-p-Aminophenol at Carbon Electrodes: Electrochemical Behavior 
    INAM-UL-HAQUE; KIRAN BANO; SHAHID IQBAL (Karachi: The Chemical Society of Pakistan, 2010-12-04)
    Polymer coated carbon electrodes were prepared by reductive electro-polymerization of p-aminophenol in 1.0 M nitric acid. Polymer films thus formed were then investigated by voltammetric and electrochemical impedance ...
  • Comparative Study on the Antioxidant and Antimicrobial Activities of Stem-Bark Extract of Litchi chinensis and its Organic Fractions 
    DURRE SHAHWAR; MUHAMMAD ASAM RAZA; MIRZA ABID SHABBIR MUGHAL; MUHAMMAD ATHAR ABBASI; VIQAR U ODIN AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-06-16)
    Aqueous-methanolic (20:80) extract of stem-bark of Litchi chinensis Sonn. was fractionated with diethyl ether, ethyl acetate and n-butanol using solvent extraction technique, and then total phenols (TP), total flavonoides ...
  • Comparative Study on the Leaching Characteristics of Industrial Sludge and Fly Ash using KSLP and TCLP Techniques 
    BYUNG-KEUN LEE; HYEON-WOOK HWANG; TAHlR IMRAN QURESHI; YOUNG-JU KIM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Leaching characteristics of industrial sludge and fly ash using Korean Standard Leaching Procedure (KSLP) and Toxicity Characteristics Leaching Procedure (TCLP) were studied. Possibilities of re-adsorption of heavy metal ...
  • COMPARATIVE STUDY ON THE NO₂ BINDINGS TO (MGO)N AND (CAO)N CLUSTERS, N = 4, 6, AND 9: FORMATION OF NITRITE AND NITRATE 
    FATHI HASSAN BAWA (The chemical society of Pakistan is an approved society from the PSF., 2010-06-09)
    A comparative study on MgO and CaO clusters toward NO2 adsorption have been investigated theoretically by the density functional theory, approach Beck3LYP. Bond lengths, bond angles as well as adsorption energies of the ...
  • Comparison of Human Serum Neopterine and CRP Levels 
    MUSTAFA YONTEM; GORKEM UMUT (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-12-20)
    Neopterine (NP), low weight molecule of 2-amino-4-hydroxy, is pterin. NP is a catabolic product of guanosine triphosphate (GTP) that is apurine nucleotide. It also is synthesized by macrophages. These cells are the most ...
  • Compettition of Aluminium on Iron Binding Site in the Biological System 
    FOUZIA SULTANA REHMANI; ABDULAHAD SHAFIQUE; ASADULLAH SHAFIQUE; SHERAZ AHMAD KHAN; SABAHAT AMBREEN; MUHAMMAD INAM-UL-HAQ; MUHAMMAD RASHID; SYED SAMMAR ABBAS (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Aluminum toxicity has been recognized in many ways, when exposure to heavy metals is prolonged, renal function is limited or a previously accumulated bone burden is released in stress and illness. Aluminum is generally ...
  • Contamination of Agro-Ecosystem and Human Health Hazards from Wastewater used for Irrigatio 
    MUHAMMAD JAMIL; MUHAMMAD SHARIF ZIA; MUHAMMAD QASIM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-06-18)
    The use of untreated/inadequately treated wastewater for irrigation in agriculture has been practiced for many years in arid zones of industrialized as well as developing countries. Farmers mostly use wastewater for growing ...

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