1
|
Bhagat J, Singh N, Shimada Y. Southeast Asia's environmental challenges: emergence of new contaminants and advancements in testing methods. FRONTIERS IN TOXICOLOGY 2024; 6:1322386. [PMID: 38469037 PMCID: PMC10925796 DOI: 10.3389/ftox.2024.1322386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/14/2024] [Indexed: 03/13/2024] Open
Abstract
Emerging contaminants, including pharmaceuticals, personal care products, microplastics, and per- and poly-fluoroalkyl substances, pose a major threat to both ecosystems and human health in Southeast Asia. As this region undergoes rapid industrialization and urbanization, the increasing presence of unconventional pollutants in water bodies, soil, and various organisms has become an alarming concern. This review comprehensively examines the environmental challenges posed by emerging contaminants in Southeast Asia and recent progress in toxicity testing methods. We discuss the diverse range of emerging contaminants found in Southeast Asia, shedding light on their causes and effects on ecosystems, and emphasize the need for robust toxicological testing methods. This review is a valuable resource for researchers, policymakers, and environmental practitioners working to mitigate the impacts of emerging contaminants and secure a sustainable future for Southeast Asia.
Collapse
Affiliation(s)
- Jacky Bhagat
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie, Japan
- Mie University Zebrafish Research Center, Tsu, Mie, Japan
| | - Nisha Singh
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan
| | - Yasuhito Shimada
- Mie University Zebrafish Research Center, Tsu, Mie, Japan
- Department of Bioinformatics, Mie University Advanced Science Research Promotion Center, Tsu, Mie, Japan
- Department of Integrative Pharmacology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| |
Collapse
|
2
|
Deng Z, Zhang W, Zheng S, Xu Z. Metal-organic framework-101 grafted with amino groups as solid-phase extraction adsorbent coupled with liquid chromatography for the determination of phenoxycarboxylic acids in environmental samples. J Chromatogr A 2021; 1657:462569. [PMID: 34614471 DOI: 10.1016/j.chroma.2021.462569] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 11/18/2022]
Abstract
Metal-Organic Framework (MOF) MIL-101 and three amino-modified MIL-101s were synthesized and used as adsorbents for solid-phase extraction of trace-level polar phenoxycarboxylic acids (PCAs) from environmental water samples for quantification by liquid chromatography. The four MOFs were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, N2 adsorption-desorption isotherm, pore structure analysis and powder X-ray diffraction analysis. Parameters which play important roles in the process of solid phase extraction were optimized. MIL-101-ethylenediamine (ED) was chosen as the optimum adsorbent for the extraction of PCAs due to electron donation of alkyl groups in aliphatic amino groups and the smaller steric hindrance. The extraction efficiency using MIL-101-ED compacted column was compared with three commercial columns and the influence of humic acid (HA) on extraction was investigated. The merits of newly-built SPE-LC method based on MIL-101-ED are as follows: (a) low limits of detection (0.052-0.160 ng mL-1), (b) wide linear ranges (0.5-1000 ng mL-1), (c) good repeatabilities (1.33-3.35%) and reproducibilities (2.51-3.49%) and (d) excludability of HA. This method has been applied to the determination of PCAs in environmental water samples successfully.
Collapse
Affiliation(s)
- Zehui Deng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wenjing Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shourong Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Zhaoyi Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| |
Collapse
|
3
|
Rosli FA, Ahmad H, Jumbri K, Abdullah AH, Kamaruzaman S, Fathihah Abdullah NA. Efficient removal of pharmaceuticals from water using graphene nanoplatelets as adsorbent. ROYAL SOCIETY OPEN SCIENCE 2021; 8:201076. [PMID: 33614065 PMCID: PMC7890490 DOI: 10.1098/rsos.201076] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 12/02/2020] [Indexed: 05/13/2023]
Abstract
Recently, pharmaceutical pollutants in water have emerged as a global concern as they give threat to human health and the environment. In this study, graphene nanoplatelets (GNPs) were used to efficiently remove antibiotics sulfamethoxazole (SMX) and analgesic acetaminophen (ACM) as pharmaceutical pollutants from water by an adsorption process. GNPs; C750, C300, M15 and M5 were characterized by high-resolution transmission electron microscopy, Raman spectroscopy, X-ray diffraction and Brunauer-Emmett-Teller. The effects of several parameters viz. solution pH, adsorbent amount, initial concentration and contact time were studied. The parameters were optimized by a batch adsorption process and the maximum removal efficiency for both pharmaceuticals was 99%. The adsorption kinetics and isotherms models were employed, and the experimental data were best analysed with pseudo-second kinetic and Langmuir isotherm with maximum adsorption capacity (Qm) of 210.08 mg g-1 for SMX and 56.21 mg g-1 for ACM. A regeneration study was applied using different eluents; 5% ethanol-deionized water 0.005 M NaOH and HCl. GNP C300 was able to remove most of both pollutants from environmental water samples. Molecular docking was used to simulate the adsorption mechanism of GNP C300 towards SMX and ACM with a free binding energy of -7.54 kcal mol-1 and -5.29 kcal mol-1, respectively, which revealed adsorption occurred spontaneously.
Collapse
Affiliation(s)
- Fatin Ahza Rosli
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Haslina Ahmad
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Khairulazhar Jumbri
- Department of Fundamental and Applied Sciences, Faculty of Science and Information Technology, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Abdul Halim Abdullah
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Integrated Chemical Biophysics Research Centre, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Sazlinda Kamaruzaman
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nor Ain Fathihah Abdullah
- Department of Fundamental and Applied Sciences, Faculty of Science and Information Technology, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| |
Collapse
|
4
|
Elucidation and Characterization of New Chlorinated By-Products after Electrochemical Degradation of Hydrochlorothiazide Using Graphite–Poly Vinyl Chloride Electrode. Catalysts 2018. [DOI: 10.3390/catal8110540] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This paper describes an electrochemical treatment process of hydrochlorothiazide (HDZ) under different conditions such as initial concentration, sodium chloride and applied voltage. In this present study, HDZ was treated by electrochemical oxidation process using graphite-PVC composite electrode as anode and Platinum (Pt) as cathode. All results were analyzed using liquid chromatography-time of flight/mass spectrometry (LC-TOF/MS). It was found that at high applied voltages, and high amounts of NaCl, the electrochemical treatment process was more efficient. The removal% of HDZ was 92% at 5 V after 60 min. From the obtained results, the electrochemical oxidation process of HDZ followed pseudo first order with rate constant values ranged between 0.0009 and 0.0502 min−1, depending on the experimental conditions. Energy consumption was also considered in this study, it was ranged between 0.9058 and 5.56 Wh/mg using 0.5, 0.3 and 0.1 g NaCl within interval times of (10, 20, 30, 40, 50, 60, 70, and 80 min). Five chlorinated and one non-chlorinated by-products were formed and analyzed in negative ionization (NI) mode during the electrochemical process. Due to the strong oxidizing potential of the chlorine (Cl2) and hypochlorite ion (ClO−), HDZ and its by-products were removed after 140 min. Furthermore, a novel synthesis of chlorothiaizde as one of the new by-products was reported in this present study. Toxicity was impacted by the formation of the by-products, especially at 20 min. The inhibition percentage (I%) of E. coli bacteria was decreased to be the lowest value after 140 min.
Collapse
|