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Islam MS, Nur-E-Alam M, Iqbal MA, Khan MB, Mamun SA, Miah MY, Rasheduzzaman M, Appalasamy S, Salam MA. Spatial distribution of heavy metal abundance at distance gradients of roadside agricultural soil from the busiest highway in Bangladesh: A multi-index integration approach. Environ Res 2024; 250:118551. [PMID: 38408626 DOI: 10.1016/j.envres.2024.118551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/19/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
Bangladesh is currently experiencing significant infrastructural development in road networking system through the construction or reconstruction of multiple roads and highways. Consequently, there is a rise in traffic intensity on roads and highways, along with a significant contamination of adjacent agricultural soils with heavy metals. The purpose of this study was to evaluate the ecological risk, health risk and the abundance of seven heavy metals (Cu, Mn, Pb, Cd, Cr, As, and Ni) in three distance gradients (0, 300, and 500 m) of agricultural soil along the Dhaka-Chattogram highway. The concentration of heavy metals was measured with an Atomic Absorption Spectrophotometer (AAS) on a total of 36 soil samples that were taken from 12 different sampling sites. Based on the findings, Cd had a high contamination factor for all distance gradients, whereas Cr had a moderate contamination factor in 67% of the study areas. According to the Pollution Load Index (PLI), Cd, Cr, and Pb were the predominant pollutants. Principal component analysis (PCA) result shows these metals mainly came from anthropogenic sources. The considerable positive correlations between Cu-Pb, Cu-Cd, Pb-Cd, and Cr-Ni all pointed to shared anthropogenic origins. As per Potential Ecological Risk Assessment (PERI) analysis, Pb, Cd, Cr, and Ni each contribute significantly and pose a moderate threat. The Target Hazard Quotient (THQ) values for all pathways of exposure to Pb and Cr in soils were more than 1, which would pose a significant risk to human health in the following order: THQadult female > THQadult male > THQchildren. This study will help to evaluate the human health risk and develop a better understanding of the heavy metal abundance scenario in the agricultural fields adjacent to this highway.
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Affiliation(s)
- Md Saydul Islam
- Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Md Nur-E-Alam
- Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Muhammad Anwar Iqbal
- Institute of Water and Flood Management (IWFM), Bangladesh University of Engineering and Technology (BUET), Dhaka, 1000, Bangladesh
| | - Md Badiuzzaman Khan
- Department of Environmental Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Shamim Al Mamun
- Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail, 1902, Bangladesh
| | - Md Yunus Miah
- Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Rasheduzzaman
- Department of Environmental Science and Disaster Management, Bangabandhu Sheikh Mujibur Rahman Science & Technology University, Gopalganj, 8100, Bangladesh
| | - S Appalasamy
- Institute of Food Security and Sustainable Agriculture (IFSSA), Universiti Malaysia Kelantan, Jeli Campus, 17600, Jeli, Kelantan, Malaysia; Faculty of Earth Science, Universiti Malaysia Kelantan, Jeli Campus, 17600, Jeli, Kelantan, Malaysia
| | - Mohammed Abdus Salam
- Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
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Shilina PV, Ignatyeva DO, Kapralov PO, Sekatskii SK, Nur-E-Alam M, Vasiliev M, Alameh K, Achanta VG, Song Y, Hamidi SM, Zvezdin AK, Belotelov VI. Nanophotonic structures with optical surface modes for tunable spin current generation. Nanoscale 2021; 13:5791-5799. [PMID: 33704301 DOI: 10.1039/d0nr08692d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We propose a novel type of photonic-crystal (PC)-based nanostructures for efficient and tunable optically-induced spin current generation via the spin Seebeck and inverse spin Hall effects. It has been experimentally demonstrated that optical surface modes localized at the PC surface covered by ferromagnetic layer and materials with giant spin-orbit coupling (SOC) notably increase the efficiency of the optically-induced spin current generation, and provides its tunability by modifying the light wavelength or angle of incidence. Up to 100% of the incident light power can be transferred to heat within the SOC layer and, therefore, to the spin current. Importantly, the high efficiency becomes accessible even for ultra-thin SOC layers. Moreover, the surface patterning of the PC-based spintronic nanostructure allows for the local generation of spin currents at the pattern scales rather than the diameter of the laser beam.
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Affiliation(s)
- P V Shilina
- National Research University Higher School of Economics, Moscow 101000, Russia.
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Kotov VA, Nur-E-Alam M, Vasiliev M, Alameh K, Balabanov DE, Burkov VI. Enhanced Magneto-Optic Properties in Sputtered Bi- Containing Ferrite Garnet Thin Films Fabricated Using Oxygen Plasma Treatment and Metal Oxide Protective Layers. Materials (Basel) 2020; 13:ma13225113. [PMID: 33198424 PMCID: PMC7697510 DOI: 10.3390/ma13225113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 11/25/2022]
Abstract
Magneto-optic (MO) imaging and sensing are at present the most developed practical applications of thin-film MO garnet materials. However, in order to improve sensitivity for a range of established and forward-looking applications, the technology and component-related advances are still necessary. These improvements are expected to originate from new material system development. We propose a set of technological modifications for the RF-magnetron sputtering deposition and crystallization annealing of magneto-optic bismuth-substituted iron-garnet films and investigate the improved material properties. Results show that standard crystallization annealing for the as-deposited ultrathin (sputtered 10 nm thick, amorphous phase) films resulted in more than a factor of two loss in the magneto-optical activity of the films in the visible spectral region, compared to the liquid-phase grown epitaxial films. Results also show that an additional 10 nm-thick metal-oxide (Bi2O3) protective layer above the amorphous film results in ~2.7 times increase in the magneto-optical quality of crystallized iron-garnet films. On the other hand, the effects of post-deposition oxygen (O2) plasma treatment on the magneto-optical (MO) properties of Bismuth substituted iron garnet thin film materials are investigated. Results show that in the visible part of the electromagnetic spectrum (at 532 nm), the O2 treated (up to 3 min) garnet films retain higher specific Faraday rotation and figures of merit compared to non-treated garnet films.
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Affiliation(s)
- V. A. Kotov
- Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 11 Mohovaya St, Moscow 125009, Russia;
| | - M. Nur-E-Alam
- Electron Science Research Institute, Edith Cowan University, Joondalup, WA 6027, Australia; (M.V.); (K.A.)
- Correspondence:
| | - M. Vasiliev
- Electron Science Research Institute, Edith Cowan University, Joondalup, WA 6027, Australia; (M.V.); (K.A.)
| | - K. Alameh
- Electron Science Research Institute, Edith Cowan University, Joondalup, WA 6027, Australia; (M.V.); (K.A.)
| | - D. E. Balabanov
- Moscow Institute of Physics and Technology, 9 Institutski Per., Dolgoprudny 141700, Russia; (D.E.B.); (V.I.B.)
| | - V. I. Burkov
- Moscow Institute of Physics and Technology, 9 Institutski Per., Dolgoprudny 141700, Russia; (D.E.B.); (V.I.B.)
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Nur-E-Alam M, Islam MM, Islam MN, Rima FR, Islam MN. Quality analysis, miceller behavior, and environmental impact of some laundry detergents available in Bangladesh. Environ Sci Pollut Res Int 2016; 23:5468-5476. [PMID: 26566616 DOI: 10.1007/s11356-015-5724-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
The cleansing efficiencies of laundry detergents depend on composition and variation of ingredients such as surfactants, phosphate, and co-builders. Among these ingredients, surfactants and phosphate are considered as hazardous materials. Knowledge on compositions and micellar behavior is very useful for understanding their cleansing efficiencies and environmental impact. With this view, composition, critical micelle concentration, and dissolved oxygen level in aqueous solution of some laundry detergents available in Bangladesh such as keya, Wheel Power White, Tibet, Surf Excel, and Chaka were determined. Surfactant and phosphate were found to be maximum in Surf Excel and Wheel Power White, respectively, while both of the ingredients were found to be minimum in Tibet. The critical micelle concentration decreased with increasing surfactant content. The amount of laundry detergents required for efficient cleansing was found to be minimum for Surf Excel and maximum for Chaka; however, cleansing cost was the highest for Surf Excel and the lowest for Tibet. The maximum amount of surfactants and phosphate was discharged by Surf Excel and Wheel Power White, respectively, while discharges of both of the ingredients were minimum for Tibet. The maximum decrease of dissolved oxygen level was caused by Surf Excel and the minimum by Tibet. Therefore, it can be concluded that Tibet is cost-effective and environment friendly, whereas Surf Excel and Wheel Power White are expensive and pose a threat to water environment.
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Affiliation(s)
- M Nur-E-Alam
- Department of Chemistry, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - M Monirul Islam
- Department of Chemistry, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | - M Nazrul Islam
- Department of Chemistry, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | | | - M Nurul Islam
- Department of Chemistry, University of Rajshahi, Rajshahi, 6205, Bangladesh
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Choudhary MI, Nur-E-Alam M, Akhtar F, Ahmad S, Baig I, Ondögnii P, Gombosurengyin P. Five new peltogynoids from underground parts of Iris bungei: a Mongolian medicinal plant. Chem Pharm Bull (Tokyo) 2001; 49:1295-8. [PMID: 11605657 DOI: 10.1248/cpb.49.1295] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Five new peltogynoids, irisoids A-E (1-5), have been isolated from the underground parts of Iris bungei. The structures of the new compounds were established on the basis of spectroscopic methods and were found to be 1,8,10-trihydroxy-9-methoxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (1), 1,8-dihydroxy-9,10-dimethoxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (2), 1,10-dihydroxy-8,9-dimethoxy-[1]benzopyrano-13,2-c][2]-benzopyran-7(5H)-one (3), 1,8-dihydroxy-9,10-methylenedioxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (4), and 1,8,11-trihydroxy-9,10-methylenedioxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (5). The structure of irisoid B (2) was established unambiguously by X-ray diffraction study.
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Affiliation(s)
- M I Choudhary
- HEJ Research Institute of Chemistry, University of Karachi, Pakistan.
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Ngounou FN, Choudhary MI, Malik S, Makhmoor T, Nur-E-Alam M, Zareen S, Lontsi D, Ayafor JF, Sondengam BL. New antioxidant and antimicrobial ellagic acid derivatives from Pteleopsis hylodendron. Planta Med 2001; 67:335-339. [PMID: 11458450 DOI: 10.1055/s-2001-14306] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Bioassay-guided isolation of two new compounds, 3,4-methylenedioxy-3'-O-methyl-4'-O-glucoside ellagic acid (1) and the pteleoellagic acid derivative (2), from the stem bark of Pteleopsis hylodendron is reported along with 3,4-methylenedioxy-3'-O-methyl ellagic acid (3), 3,3'-di-O-methyl ellagic acid (4) and 3,3',4'-tri-O-methyl ellagic acid (5), which were obtained for the first time from this plant. The structures of these compounds were elucidated with the help of spectroscopic studies. Compounds 1 and 4 were found to have significant antioxidant activity, while compounds 1-4 showed antibacterial activity against different pathogenic bacteria.
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Atta-Ur-Rahman AU, Choudhary MI, Parvez K, Ahmed A, Akhtar F, Nur-E-Alam M, Hassan NM. Quinolizidine alkaloids from Sophora alopecuroides. J Nat Prod 2000; 63:190-192. [PMID: 10691706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new matrine-type alkaloid, 7alpha-hydroxysophoramine (1), was isolated from the aerial parts of Sophora alopecuroides together with eight known alkaloids, 12beta-hydroxysophocarpine (2), sophoramine (3), 14beta-hydroxymatrine, matrine, sophoridine, sophocarpine, adenocarpine, and baptifoline. The structures of compounds 1-3 were confirmed through single-crystal X-ray diffraction analysis.
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Affiliation(s)
- A u Atta-Ur-Rahman
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan
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Choudhary MI, Parvez K, Ahmed A, Akhtar F, Nur-E-Alam M, Hassan NM. Quinolizidine Alkaloids from Sophora alopecuroides. J Nat Prod 2000; 63:190-192. [PMID: 28054778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new matrine-type alkaloid, 7α-hydroxysophoramine (1), was isolated from the aerial parts of Sophora alopecuroides together with eight known alkaloids, 12β-hydroxysophocarpine (2), sophoramine (3), 14β-hydroxymatrine, matrine, sophoridine, sophocarpine, adenocarpine, and baptifoline. The structures of compounds 1-3 were confirmed through single-crystal X-ray diffraction analysis.
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Affiliation(s)
- M Iqbal Choudhary
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan, and Department of Chemistry, University of Baluchistan, Quetta, Pakistan
| | - Khalid Parvez
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan, and Department of Chemistry, University of Baluchistan, Quetta, Pakistan
| | - Aftab Ahmed
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan, and Department of Chemistry, University of Baluchistan, Quetta, Pakistan
| | - Farzana Akhtar
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan, and Department of Chemistry, University of Baluchistan, Quetta, Pakistan
| | - M Nur-E-Alam
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan, and Department of Chemistry, University of Baluchistan, Quetta, Pakistan
| | - Naeem M Hassan
- International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan, and Department of Chemistry, University of Baluchistan, Quetta, Pakistan
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