Science Journal of Chemistry

Volume 8, Issue 5, October 2020

  • Evaluation of Antioxidant Activities of Celosia trigyna (Linn) Extracts African Extinction Vegetable

    Oluwasayo Esther Ogunjinmi, Samson Oguntola Ogunjinmi, Samson Oluwagbemiga Alayande, Esther Omelebele Nwoke, Taofik Adewale Adedosu

    Issue: Volume 8, Issue 5, October 2020
    Pages: 102-106
    Received: Aug. 21, 2020
    Accepted: Sep. 07, 2020
    Published: Sep. 21, 2020
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    Abstract: Celosia trigyna recognized as a known ancient vegetable unfortunately unpopular in this modern age. In this study, antioxidant activities of Celosia trigyna leaves were evaluated in crude extract (methanol) and different fractions; chloroform, hexane, methanol and ethylacetate. Antioxidant evaluation were established using total antioxidant activit... Show More
  • Geochemical Characterization of Two Niger Delta Crude Oils and Their Mixtures II: Correlation of Bulk Properties and Aliphatic Hydrocarbons

    Mark Obinna Onyema, Nwannedi Christian Okoroh, Ikenna Hope Okorie, Leo Chigbu Osuji

    Issue: Volume 8, Issue 5, October 2020
    Pages: 107-112
    Received: Nov. 29, 2019
    Accepted: Dec. 19, 2019
    Published: Sep. 24, 2020
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    Abstract: Correlations of bulk geochemical properties such as density, API gravity, saturates, aromatics, resins and asphaltenes (SARA) compositions, aliphatic hydrocarbons (from nC8 to nC38) and their diagnostic ratios (Pr/Ph, Pr/nC17 and Ph/nC18) were evaluated for two Niger Delta crude oils (samples A and F) and their mix at different proportions of 4:1, ... Show More
  • Syntheses, Characterization, and X-ray Crystal Structure of Heteronuclear Zn/Na Assembled with Salen-type Schiff Base

    Pokpa Haba, Mouhamadou Moustapha Sow, Mamour Sarr, Ibrahima Elhadji Thiam, Mahy Diaw, Pascal Retailleau, Mohamed Lamine Gaye

    Issue: Volume 8, Issue 5, October 2020
    Pages: 113-118
    Received: Sep. 09, 2020
    Accepted: Sep. 23, 2020
    Published: Sep. 29, 2020
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    Abstract: Herein we reported the crystal structure of a dinuclear complex [{ZnIINaI (L)(EtOH)(NO3)]}] (2) obtained by reaction with the metalloligand [Zn(L)].(H2O) (1) and sodium nitrate. The metalloligand (1) and the dinuclear (2) complexes are characterized by IR and physical measurement. Spectroscopic evidence indicated that the Schiff base H2L behave an ... Show More
  • Assessment of Quality of Artemisia afra Powder Used as Antimalarial in Tanzania

    Khamis Rashid Kheir, Francis Machum, Wilbrord Kalala, Pax Masimba, Ussi Makame Kombo, Mayassa Salum Ally

    Issue: Volume 8, Issue 5, October 2020
    Pages: 119-123
    Received: Sep. 09, 2020
    Accepted: Sep. 22, 2020
    Published: Oct. 20, 2020
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    Abstract: The quality of herbal medicine can be affected by environmental conditions where by the medicinal plants are grown or collected, the area where they are dried and processed, storage conditions, transport conditions and manufacturing processes at the point of production. The study aimed to determine the quality of heavy metals, aflatoxins and microb... Show More
  • Infrared Line Collisional Parameters of PH3 in Hydrogen: Measurements with Second-order Approximation of Perturbation Theory

    Jamel Salem, Rached Ben Younes

    Issue: Volume 8, Issue 5, October 2020
    Pages: 124-130
    Received: Mar. 24, 2020
    Accepted: Aug. 24, 2020
    Published: Oct. 26, 2020
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    Abstract: Measurement of room temperature absorption by PH3–H2 mixtures in the v2 and v4 bands of phosphine (PH3) have been made for low pressures. Fits of these spectra are made for the determination of the width for isolated lines, and line mixing in first-order Rosenkranz approximation. From the previous determinations, we deduce some remarks on the lack ... Show More