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All Journal Biology, Medicine, & Natural Product Chemistry Chimica et Natura Acta
Pyar, Hassan
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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Treatment of Water Contaminated with Polycyclic Aromatic Hydrocarbons (PAHs): A Review of Various Techniques, Constraints, and Field Procedures Sambo, Godswill; Muhammad, Syahidah Akmal; Pyar, Hassan; Binhweel, Fozy
Chimica et Natura Acta Vol 10, No 1 (2022)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v10.n1.37080

Abstract

Clean water is vital in the creation of energy and sustenance of life. However, the pollution of water and the absence of potable water are global problems resulting from agricultural and industrial activities. We have witnessed significant growth in the pollution of water by organic compounds like PAH. Experts have made an effort to establish favorable techniques for the treatment of PAH polluted water. These techniques are either thermal, biological, physical or chemical. Bioremediation, chemical oxidation, solid-phase extraction, coagulation, photocatalytic degradation and adsorption using graphenes, mesoporous silica and agricultural wastes are techniques that are already in use in the field treatment of PAHs while electrokinetic remediation and nanoremediation are still in their developmental stage. Several reviews on the treatment of sediments and soils contaminated with PAHs have been published, but only a few reviews center mainly on the removal of PAHs in water. Therefore, this review aims to provide information on the techniques used in the treatment of water contaminated with PAHs. Techniques that are already in use and those that are in their developmental stage were reviewed. The successes of these methods, limitations, constraints and field procedures were analyzed and this will help to inform decision making.
Sensitive and Selective Chromatographic Method to Determine Vanadium in Commercial Phosphoric Acid Pyar, Hassan; Wahoud, Abdul Rahman
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.725-729

Abstract

The spectrophotometric method adopting N-Benzoyl-N-phenylhydroxylamine was exechted for ascertaining vanadium in environmental samples. high performance liquid chromatography (HPLC) system equipped with a C18 RP column was used to determine vanadium in wet phosphoric acid and phosphate samples. A rapid pre-column response of vanadium with 5-Br-PADAP was used without prior separation or adding any masking agents. The results showed that, the chelates were detected after being injected through the column by UV- Vis detector at wavelength 585 nm. The molar absorptivity is 5.5 x104 and the retention time is 6.3 minutes. The sensitivity of this reagent is equal to twice as high as the use of (PAR) reagent. The RSD was 1.7% for weak concentrations to 0.22% for high concentrations and the relative error (RE) was between 3.21% and 1.07%. In conclusion the method of the currently study was found highly sensitive and selective and the results show a good accuracy and precision.
Assessment of Knowledge, Attitude and Practice Towards Infection Prevention and Control Among Health Staff at Seiyun General Hospital Authority Alsawmhi, Sarah O.; Alhussan, Anwar S.; Pyar, Hassan; Sumait, Taher I. Bin
Biology, Medicine, & Natural Product Chemistry Vol 14, No 2 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.142.799-806

Abstract

Healthcare workers (HCWs) are continuously exposed to pathogenic microorganisms, which can lead to serious infections. Infection prevention and control (IPC) relies heavily on HCWs’ knowledge, attitudes, and practices (KAP). This study aimed to assess KAP towards IPC among health staff at Seiyun General Hospital Authority, Yemen, during 2023–2024. A cross-sectional study was conducted involving 106 participants. Data were collected through a self-administered questionnaire and analyzed using SPSS software. Among participants, 60.6% held a diploma, 62.5% were male, 37.5% were nurses, and 33.7% had 1–5 years of experience. Regarding knowledge, 91.3% reported understanding IPC, and 76.9% acknowledged the role of sterilization. In terms of attitude, 60% strongly agreed that handwashing reduces infections. As for practices, 90.4% washed their hands before patient care, and 76% educated patients about IPC. Significant associations were found between KAP levels and education, age, gender, job category, and experience. Occupational category and work experience influenced KAP levels, while education, age, and gender showed limited impact.
Co-Authors Alhussan, Anwar S. Alsawmhi, Sarah O. Binhweel, Fozy Muhammad, Syahidah Akmal Sambo, Godswill Sumait, Taher I. Bin Wahoud, Abdul Rahman