https://scialert.net Journal of Environmental Science and Technology en-us Science Alert Thu, 11 Jun 2026 18:11:57 +0200 Thu, 11 Jun 2026 18:14:14 +0200 RssPublisher 0.2.0 beta https://scialert.net/images/logo.gif https://scialert.net 41 233 Journal of Environmental Science and Technology Geoelectrical and Geochemical Approaches for Groundwater Quality Assessment in the Equatorial Region Background and Objective: Urban areas such as Pekanbaru produce 0.9 kg of waste per-person per-day. Particularly in the densely populated region, especially Pekanbaru City, the community tends to use drilled wells and ring wells to meet their water needs. Therefore, it is necessary to research the quality of groundwater. Hence, this study aims to determine the groundwater quality in the study area using the Schlumberger geoelectric method and to analyze based on the geochemical method. Materials and Methods: The proposed method is based on geoelectric data measurements using Schumberger’s rule. This test was carried out on two lines in Padang Terubuk Village, Senapelan District, Pekanbaru City. The measured values of current and potential differences were analyzed statistically using IP2WIN software to obtain ground water. Next, 8 drilled well water samples were analyzed using the geochemical method to determine the quality of the groundwater which included the parameters pH, turbidity, TDS and conductivity which were measured using the AMTAST AMT03 tool. Results: The groundwater in line 1 is found in layer 10 at a depth of 12.9 m with a resistivity value of 14.8 m and rock types in the form of silt soil and soft wet soil. On line 2 groundwater is found in the 8th layer with a depth of 7 m and a resistivity value of 19 m and the rock type is silt/sandy soil. This is consistent with the facts on the ground where people use ring wells and drilled wells at depths of between 5 and 12 m. The results of the pH test for water suitable for consumption were only found in samples 1A and 1B based on government regulation. Conclusion: Ultimately, this research holds applicability within urban settings exhibiting similar regional traits, offering a viable approach to investigating potable groundwater.]]> https://scialert.net/abstract/?doi=jest.2024.1.9 11 June, 2026 Forensic Identification of Sources and Ecological Risk Assessment of Polycyclic Aromatic Hydrocarbons in an Aquatic Ecosystem Background and Objective: Polycyclic Aromatic Hydrocarbons (PAHs) are environmental pollutants formed at high temperatures and under pyrolytic conditions during the incomplete combustion of organic matter. This paper reports sources and ecological risk assessment of PAHs in sediment and specimens of Pachymelania aurita in a Nigerian Coastal aquatic ecosystem. Materials and Methods: The study involved six months collection of water, sediment and macrofauna samples from five study locations. Sixteen priority PAHs pollutants described by the USEPA were analyzed to determine variation in concentration and distribution in the study area. The sources of these pollutants in the study area was investigated using the diagnostic ratio method. Ecological risk factors were computed to determine the risk posed by these pollutants and statistical analyses were performed to evaluate the relationship between PAH concentrations in samples and to determine variation in risk parameters. Results: Values of Σ16PAHs were highest in sediment with a range of 4.7-13.0 μg kg^–1. Among the PAHs, chrysene and benz[a]anthracene occurred in relatively higher concentrations in the collected samples. Polycyclic aromatic hydrocarbons in the area may have originated majorly from pyrolytic sources, with some elements of petrogenic input in sediment samples. Hazard Index was highest for sediment samples. Values of BAF were higher than BSAF in all the sampling points. Conclusion: The concentrations of individual and Σ16PAHs at the sampling points were below regulatory limits in most cases, however, the growing anthropogenic activities may result in the aggravation of risk parameters for the study area which may lead to general threat to ecological integrity.]]> https://scialert.net/abstract/?doi=jest.2024.10.19 11 June, 2026