Indexing

Abstract: Access to safe and potable water remains a major public health concern in developing communities, where environmental factors significantly influence water quality. This study examined the impact of environmental factors on the chemical composition of pipe-borne water used in Eliozu community, Rivers State, South-South Nigeria. Water samples were collected from two supply points and analyzed under standard laboratory conditions for key physicochemical parameters including pH, temperature, dissolved oxygen (DO), electrical conductivity, total dissolved solids (TDS), phosphate, chloride, alkalinity, turbidity, nitrate, and sulphate. Findings revealed that the pH values (5.80 and 5.50) were below the permissible WHO range (6.5–8.5), indicating acidic water with potential risks of pipeline corrosion and adverse health effects. DO levels (1.50 mg/l and 2.50 mg/l) were also far below recommended limits (4–6 mg/l), suggesting organic pollution and possible microbial contamination. Electrical conductivity (1.27 μS/cm and 9.00 μS/cm) and TDS (0.86 mg/l and 11.25 mg/l) were considerably lower than WHO limits, classifying the water as soft and deficient in essential minerals. Phosphate concentration (0.24 mg/l) exceeded the WHO threshold of 0.1 mg/l, pointing to anthropogenic pollution sources. Conversely, chloride, alkalinity, turbidity, nitrate, and sulphate levels were within safe limits, reflecting partial compliance with water quality standards. In conclusion, while the water samples met some physical standards, chemical imbalances pose potential health hazards. It is recommended that regular monitoring, treatment, and community sensitization be prioritized to ensure safe drinking water supply in Eliozu.

Keywords: pipe-borne, environmental, composition, water and chemical.

Title: INVESTIGATING ENVIRONMENTAL FACTORS AFFECTING PIPE-BORNE WATER COMPOSITION IN ELIOZU COMMUNITY, RIVERS STATE, NIGERIA

Author: John, Godson Nnamdi, Onyeozu, Kenneth Chjioke

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 39-46

Paper Publications

Website: www.paperpublications.org

Published Date: 11-September-2025

Abstract: This study investigated the presence and concentration levels of heavy metals and polycyclic aromatic hydrocarbons in widely consumed spices and food colorants in Nigeria. For accurate results, most popular samples were collected from a major market in Port Harcourt, Nigeria. Spices are substances from organic or inorganic origins that add flavour to dishes, derived from different parts of plants and can also be synthetically produced.  In this study, Nitric acid - Hydrochloric acid Digestion tests and advanced analytic techniques including Atomic Absorption Spectroscopy (AAS) and Gas chromatography- Mass Spectrometry (GC-MS) were carried out to determine the concentrations of different heavy metals in selected spice samples. The concentrations of some metals are Lead(Pb) - 3.4 ppm, 0.32 ppm, 1.22 ppm, 0.46 ppm and 3.01 ppm in samples A, B, C, D and E respectively. Copper (Cu) concentrations in these five samples were 8.12 ppm, 3.23 ppm, 5.43 ppm, 1.35 ppm and 8.00 ppm. Iron (Fe) concentrations are 55.21 ppm, 31.32 ppm, 38.11 ppm, 22.21zinc and chromium were also found in the samples in high concentrations when compared with the World Health Organization standards. Poly aromatic hydrocarbons including naphthalene, acenaphthylene, fluorine, chrysene were found to be in very high concentration of 82.41 ppm, 74.78 ppm, 140.28 ppm, 58.78 ppm and 132.93 ppm in these five samples.  This research aims to assess the safety and quality of these common food spices and colorants given the potential health risks associated with these contaminants.

Keywords: Spices, Lead, Copper, Iron, Chromium, Naphthalene, AAS, and GC-MS.

Title: DETERMINATION OF HEAVY METALS AND POLYCYCLIC AROMATIC HYDROCARBONS IN SOME SPICES AND FOOD COLORANTS CONSUMED IN NIGERIA

Author: Oriji, Garrick Onuoha, John, Godson Nnamdi

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 29-38

Paper Publications

Website: www.paperpublications.org

Published Date: 16-July-2025

Abstract: A novel series of heterobimetallic complexes of copper has been synthesized possessing 2,6-diaminopyridine moiety. All the synthesized complexes have been characterized in the light of various physicochemical techniques like elemental analyses, conductance measurements, molecular weight determination, electronic, infrared and electronic spin resonance X-ray, mass spectral studies and DFT analysis. The observed low conductance values of the synthesized heterobimetallic complexes suggest their non-ionic character. The studies presented in the series unveils the propensity of Cu(II) complexes with general formula [Cu(C₅H₅N₃)₂M'₂(R)₄Cl₂] where M'=Sn, Si, Ti or Zr and R= CH₃,C₆H₅ or C₅H₅ against microbial pathogens Fusarium oxysporum, Rhizopus nigricans, Escherichia coli and Bacillus subtilis. Amid all the heterobimetallic complexes, the one presenting most promising antimicrobial activity was assessed on male albino rats for its toxicological effect by comparing the results with the standard fungicide Bavistin.

Keywords: Bimetallic complexes, Heterobimetallic complexes, DFT investigation, Antibacterial activity, Antifungal activity, Toxicological.

Title: Synthesis, Spectroscopic Elucidation, Density Functional Theory (DFT) Calculations, Toxicological Effects and Biological aspects of Novel Heterobimetallic Cu(II) complexes containing 2,6-diaminopyridine Moiety

Author: Madhu, P. Sharma, A. Singh, Ashu Chaudhary

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 17-28

Paper Publications

Website: www.paperpublications.org

Published Date: 07-June-2025

Abstract: This is a research work on the inhibition of mild steel corrosion in acidic medium, using Nypa palm fruit extract. The corrosion of metals is a serious problem in many industries, installations and civil services such as water and sewage supplies. One of the most useful and practical methods that is used to control and protect metals against corrosion is the use of inhibitors, especially in acidic media. This study investigated the effective use of Nypa palm fruit extract in epoxy matrix as a bio-based corrosion inhibitor in epoxy coatings for mild steel exposed to acidic solutions. This research was assessed by fourier transform infrared spectroscopy, FTIR and polarization, PDP technique. The fourier transform infrared spectroscopy revealed peaks that corresponds to functional groups, while polarization curves revealed that the extract in epoxy matrix a barrier-layer inhibitor. Inhibition efficiency increased with extract concentration increased up to 1.5g. The results revealed that the extract of the nypa palm fruit in epoxy matrix could serve as an effective inhibitor for the corrosion of mild steel in acidic medium.

Keywords: Nypa palm, Epoxy matrix, Mild steel, Corrosion, Acidic media.

Title: INHIBITION OF MILD STEEL CORROSION IN ACIDIC MEDIUM USING NYPA PALM FRUIT ACETONE EXTRACT

Author: Odike, O. C., Sofolabo, A. O., Amakoromo, T. E.

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 11-16

Paper Publications

Website: www.paperpublications.org

Published Date: 24-April-2025

Abstract: This study investigates the enhancement of thermal energy storage performance in phase change materials (PCMs) through the integration of nanoparticles, focusing on nano-enhanced PCMs (NEPCMs). A finite volume numerical model is developed to simulate heat transfer and fluid dynamics during the melting process within a cylindrical enclosure. The governing equations of mass, momentum, and energy are discretized and non-dimensionalized to evaluate the effects of nanoparticle concentration, size, and distribution on heat transfer efficiency and thermodynamic stability. Aluminum oxide (Al 2 O 3 ) is used as the nanoparticle additive, with simulation results highlighting the relationship between enthalpy, energy, and velocity. The results demonstrate that nanoparticle incorporation significantly improves thermal conductivity, stabilizes flow during phase transition, and enhances overall system performance. These findings offer crucial insights into the design and optimization of solar thermal energy storage systems using NEPCMs for sustainable energy applications.

Keywords: Heat transfer; Nanoparticle; Phase change materials; Solar thermal energy storage; Thermal energy storage.

Title: Heat Transfer-Based on Nano-particles for Thermal Energy Storage in Phase Change Material

Author: Florence Awuor Misawo, Thomas T. O. Onyango, Fredrick O. Nyamwala

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 1-10

Paper Publications

Website: www.paperpublications.org

Published Date: 15-April-2025