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1. Formation of environmentally persistent free radicals from photodegradation of triclosan by metal oxides/silica suspensions and particles

Author:
Pengfei Cheng; Xuqiang Zhao; Hassan El-Ramady; Tamer Elsakhawy; Michael Gatheru Waigi; Wanting Ling
Source:
Chemosphere 2022 v.290 pp. 133322
ISSN:
0045-6535
Subject:
half life,   etc   ; irradiation; photocatalysis; photolysis; silica; soil; triclosan;     Show all 7 Subjects
Abstract:
... Metal oxides play an essential role in the photocatalysis of contaminants and substantially increase in the environment by the engineering production. However, whether emerging contaminants will be produced during photocatalysis of contaminants remains unclear. Here, triclosan (TCS) photodegradation in metal oxides/silica suspensions and particles, simulated as the states of metal oxides in water ...
DOI:
10.1016/j.chemosphere.2021.133322

2. Polymeric Nanotubes as Drug Delivery Vectors─Comparison of Covalently and Supramolecularly Assembled Constructs

Author:
Andrew Kerr; Erny Sagita; Edward D. H. Mansfield; Tri-Hung Nguyen; Orlagh M. Feeney; Colin W. Pouton; Christopher J.H. Porter; Joaquin Sanchis; Sébastien Perrier
Source:
Biomacromolecules 2022 v.23 no.6 pp. 2315-2328
ISSN:
1526-4602
Subject:
half life,   etc   ; drugs; hydrogen; liver; nanotubes; peptides; polymers;     Show all 7 Subjects
Abstract:
... Rod-shaped nanoparticles have been identified as promising drug delivery candidates. In this report, the in vitro cell uptake and in vivo pharmacokinetic/bio-distribution behavior of molecular bottle-brush (BB) and cyclic peptide self-assembled nanotubes were studied in the size range of 36–41 nm in length. It was found that BB possessed the longest plasma circulation time (t₁\₂ > 35 h), with the ...
DOI:
10.1021/acs.biomac.2c00063

3. Competing pathways of cresol formation in toluene photooxidation: OH-toluene adducts react with NO2 or with O2?

Author:
Baocong Zhao; Yongpeng Ji; Dandan Qin; Yuemeng Ji; Jiangyao Chen; Taicheng An
Source:
Journal of environmental sciences (China) 2022 v.114 pp. 211-220
ISSN:
1001-0742
Subject:
half life,   etc   ; o-cresol; photooxidation; quantum mechanics; temperature; toluene; China;     Show all 7 Subjects
Abstract:
... Methyl-hydroxy-cyclohexadienyl radicals (OTAs) are the key products of the photooxidation of toluene, with implications for the fate of toluene. Hence, we investigated the photooxidation mechanisms and kinetics of three main OTAs (o-OTA, m-OTA, and p-OTA) with NO₂ using quantum chemical calculations as well as the fate of OTAs under the different concentration ratios of NO₂ and O₂. The mechanism r ...
DOI:
10.1016/j.jes.2021.08.036

4. Degradation of Doxycycline, Enrofloxacin, and Sulfamethoxypyridazine under Simulated Sunlight at Different pH Values and Chemical Environments

Author:
Cristina Álvarez-Esmorís; Lucia Rodríguez-López; David Fernández-Calviño; Avelino Núñez-Delgado; Esperanza Álvarez-Rodríguez; Manuel Arias-Estévez
Source:
Agronomy 2022 v.12 no.2 pp. -
ISSN:
2073-4395
Subject:
half life,   etc   ; agronomy; doxycycline; enrofloxacin; fluoroquinolones; lighting; mineralization; pH; photolysis;     Show all 9 Subjects
Abstract:
... In this work, the dissipation of the antibiotics doxycycline (DC) (from the group of tetracyclines), enrofloxacin (ENR) (a fluoroquinolone), and sulfamethoxypyridazine (SMP) (a sulfonamide) is investigated both under simulated sunlight and in the dark, at three different pH (4.0, 5.5, and 7.2), and in the presence of different salts and humic acids. The results indicate that all three antibiotics ...
DOI:
10.3390/agronomy12020260

5. Homogeneous hydrolysis of 4,4’-methylenediphenyl diisocyanate (MDI) in water

Author:
Michael Neuland; Hans Allmendinger; Hans-Georg Pirkl; Robert J. West; Patrick M. Plehiers
Source:
Toxicological and environmental chemistry 2022 v.104 no.1 pp. 55-66
ISSN:
1029-0486
Subject:
half life,   etc   ; Lewis bases; absorption; excretion; hydrolysis; metabolism; pH; toxicology;     Show all 8 Subjects
Abstract:
... The environmental effects of 4,4’-methylenediphenyl diisocyanate (MDI) are linked with its potential hydrolytic conversion to 4,4’-methylenedianiline (MDA). Likewise, the reactions of MDI with biological macromolecules govern the absorption, distribution, metabolism, and excretion processes associated with sensitization and toxicological effects, and the hydrolytic formation of MDA in the body wou ...
DOI:
10.1080/02772248.2021.2009480

6. Determination of the stable isotope discrimination factor of wild organisms: a case study of the red swamp crayfish in integrated rice–crayfish (Procambarus clarkii) culture without artificial diets

Author:
Mingdi He; Feng Liu; Fang Wang
Source:
Isotopes in environmental and health studies 2022 v.58 no.1 pp. 81-98
ISSN:
1477-2639
Subject:
half life,   etc   ; Procambarus clarkii; carbon; case studies; nitrogen; rice; stable isotopes;     Show all 7 Subjects
Abstract:
... This study collected samples from a 95-day integrated rice–crayfish culture experiment, and determined the stable isotope discrimination factor of the red swamp crayfish (Procambarus clarkii) by using a model method and difference value method. The isotope ratios of P. clarkii and the dietary resources in rice fields and its feeding niche volumes were ‘conservative’ as proposed. This result broadl ...
DOI:
10.1080/10256016.2021.2008380

7. Fate of 14C-labelled ionic organic chemicals in a water-sediment system and surface water

Author:
Hannah Holzmann; Daniela Claßen; Juliane Ackermann; Andreas Schäffer
Source:
Chemosphere 2022 v.303 pp. 134885
ISSN:
0045-6535
Subject:
half life,   etc   ; mineralization; radioactivity; radiolabeling; sodium; sorption; surface water; suspended sediment;     Show all 8 Subjects
Abstract:
... The persistence assessment of organic chemicals is based on neutral reference substances. Therefore, our study aimed at investigating the influence of a chemical charge on the degradation of organic compounds in a water-sediment system (OECD 308) and surface water (OECD 309). We used radiolabelled 4-n-dodecylbenzenesulfonic acid sodium salt (¹⁴C-DS⁻, anionic), 4-n-dodecylbenzyltrimethylammonium ch ...
DOI:
10.1016/j.chemosphere.2022.134885

8. Migration of terephthalate from scraps of poly(ethylene terephthalate) (PET) in water and artificial seawater

Author:
Nobuhiro Takahashi; Yuto Miyanishi; Ryota Kato; Tomoko Amimoto; Yoko Iwamoto; Kazuhiko Takeda
Source:
Science of the total environment 2022 v.838 pp. 156053
ISSN:
0048-9697
Subject:
half life,   etc   ; cleavage (chemistry); mineral water; molecular weight; photochemistry; photoirradiation; seawater;     Show all 7 Subjects
Abstract:
... We report the migration of terephthalate and some low molecular weight organic compounds from poly(ethylene terephthalate) (PET) scraps in Milli-Q water and artificial seawater (ASW). The photochemical processes and the subsequent dark reactions were investigated using PET scraps obtained from postconsumer bottles of commercial non‑carbonated mineral water. Concentrations of terephthalate exponent ...
DOI:
10.1016/j.scitotenv.2022.156053

9. Pharmacokinetics and bioavailability of meloxicam in rainbow trout (Oncorhynchus mykiss) broodstock following intravascular, intramuscular, and oral administrations

Author:
Orhan Corum; Ertugrul Terzi; Duygu Durna Corum; Kamil Uney
Source:
Journal of veterinary pharmacology and therapeutics 2022 v.45 no.2 pp. 213-219
ISSN:
0140-7783
Subject:
half life,   etc   ; Oncorhynchus mykiss; bioavailability; breeding stock; meloxicam; oral administration; pharmacokinetics;     Show all 7 Subjects
Abstract:
... The pharmacokinetics and bioavailability of meloxicam were investigated after single intravascular (IV), intramuscular (IM), and oral dose of 1 mg/kg in rainbow trout broodstock at 11 ± 1.2°C. A total of 36 healthy rainbow trout (Oncorhynchus mykiss) broodstock weighing 1.40 ± 0.26 kg was used for the investigation. Plasma concentrations of meloxicam were measured with high‐performance liquid chro ...
DOI:
10.1111/jvp.13031

10. Synthetic DNA for Cell Surface Engineering: Experimental Comparison between Click Conjugation and Lipid Insertion in Terms of Cell Viability, Engineering Efficiency, and Displaying Stability

Author:
Xuelin Wang; Connie Wen; Brandon Davis; Peng Shi; Lidya Abune; Kyungsene Lee; Cheng Dong; Yong Wang
Source:
ACS applied materials & interfaces 2022 v.14 no.3 pp. 3900-3909
ISSN:
1944-8252
Subject:
half life,   etc   ; DNA; cell viability; chemical bonding; guidelines; immunotherapy; lipids; temperature;     Show all 8 Subjects
Abstract:
... The cell surface can be engineered with synthetic DNA for various applications ranging from cancer immunotherapy to tissue engineering. However, while elegant methods such as click conjugation and lipid insertion have been developed to engineer the cell surface with DNA, little effort has been made to systematically evaluate and compare these methods. Resultantly, it is often challenging to choose ...
DOI:
10.1021/acsami.1c22774

11. Construction of reduction-sensitive heterodimer prodrugs of doxorubicin and dihydroartemisinin self-assembled nanoparticles with antitumor activity

Author:
Guolian Ren; Danyu Duan; Geng Wang; Rongrong Wang; Yujie Li; Hengtong Zuo; Qichao Zhang; Guoshun Zhang; Yongdan Zhao; Ruili Wang; Shuqiu Zhang
Source:
Colloids and surfaces 2022 v.217 pp. 112614
ISSN:
0927-7765
Subject:
half life,   etc   ; antineoplastic activity; cytotoxicity; disulfide bonds; disulfides; doxorubicin; drug therapy; neoplasms;     Show all 8 Subjects
Abstract:
... Doxorubicin (DOX) is used as a first-line chemotherapeutic drug, whereas dihydroartemisinin (DHA) also shows a certain degree of antitumor activity. Disulfide bonds (-SS-) in prodrug molecules can be degraded in highly reducing environments. Thus, heterodimer prodrugs of DOX and DHA linked by a disulfide bond was designed and subsequently prepared as reduction-responsive self-assembled nanoparticl ...
DOI:
10.1016/j.colsurfb.2022.112614

12. Microwave-Assisted Synthesis of Porous Composites MOF–Textile for the Protection against Chemical and Nuclear Hazards

Author:
Nelly Couzon; Manuela Ferreira; Sylvain Duval; Ahmida El-Achari; Christine Campagne; Thierry Loiseau; Christophe Volkringer
Source:
ACS applied materials & interfaces 2022 v.14 no.18 pp. 21497-21508
ISSN:
1944-8252
Subject:
half life,   etc   ; adsorbents; coordination polymers; equipment; microwave radiation; microwave treatment; phosphates; uranium;     Show all 8 Subjects
Abstract:
... Since the emergence of chemical, biological, radiological, and nuclear risks, significant efforts have been made to create efficient personal protection equipment. Recently, metal–organic framework (MOF) materials have emerged as new promising candidates for the capture and degradation of various threats, like chemical warfare agents (CWAs) or radioactive species. Herein, we report a new synthesis ...
DOI:
10.1021/acsami.2c03247

13. Spontaneous Reduction-Induced Degradation of Viologen Compounds in Water Microdroplets and Its Inhibition by Host–Guest Complexation

Author:
Chu Gong; Danyang Li; Xilai Li; Dongmei Zhang; Dong Xing; Lingling Zhao; Xu Yuan; Xinxing Zhang
Source:
Journal of the American Chemical Society 2022 v.144 no.8 pp. 3510-3516
ISSN:
1520-5126
Subject:
half life,   etc   ; electrochemistry; herbicides; liquid-air interface; redox potential; risk; temperature; toxicity;     Show all 8 Subjects
Abstract:
... Water serves as an inert environment for the dispersion and application of many kinds of herbicides. Viologen compounds, a type of widely used but highly toxic herbicide, are stable in bulk water, whose half-life can be up to 23 weeks in natural water, imposing a severe health risk to mammals. In this study, we present the striking results of the spontaneous and ultrafast reduction-induced degrada ...
DOI:
10.1021/jacs.1c12028

14. Study of a high salt-resistant foam reinforced by sodium bentonite particles

Author:
Xinyu Zhou; Jia Huang; Lu Han; Wenli Luo; Weifeng Lv; Hao Shen; Xinyuan Zou; Yingde Yan; Zihao Yang
Source:
Colloids and surfaces 2022 v.649 pp. 129460
ISSN:
0927-7757
Subject:
half life,   etc   ; bentonite; computer software; foams; oils; salinity; sodium; stabilizers; surfactants; temperature;     Show all 10 Subjects
Abstract:
... Foam flooding has been widely used as an effective technology to enhance oil recovery. As a thermodynamically unstable system, foam is prone to disproportionation and coalescence especially in high-salt or high-temperature environments, which limits the effective plugging performance in complex reservoirs. In this paper, a commercial anionic-nonionic compound surfactant was used as the foaming age ...
DOI:
10.1016/j.colsurfa.2022.129460

15. An albumin scaffold grafted with an alpha-helical motif delivers therapeutic payloads by modular coiled-coil assembly

Author:
Parastou Rahimizadeh; Jeong Eun Lee; Dae-Hee Lee; Sung In Lim
Source:
International journal of biological macromolecules 2022 v.205 pp. 376-384
ISSN:
0141-8130
Subject:
half life,   etc   ; green fluorescent protein; human serum albumin; ligands; necrosis; neoplasms; pH; therapeutics;     Show all 8 Subjects
Abstract:
... A short in vivo half-life of protein-based therapeutics often restricts successful clinical translation despite their promising efficacy in vitro. As a biocompatible half-life extender, human serum albumin (HSA) has proven effective in some cases. While genetic fusion is well-established for interlinking HSA and a protein payload, it is limited to structurally simple proteins, necessitating new st ...
DOI:
10.1016/j.ijbiomac.2022.02.040

16. Antioxidant-biocompatible and stable catalase-based gelatin–alginate hydrogel scaffold with thermal wound healing capability: immobilization and delivery approach

Author:
Heidi Mohamed Abdel-Mageed; Amira Emad Abd El Aziz; Batoul Mohamed Abdel Raouf; Saleh Ahmed Mohamed; Dina Nada
Source:
3 Biotech 2022 v.12 no.3 pp. 73
ISSN:
2190-572X
Subject:
half life,   etc   ; biopolymers; calcium chloride; catalase; gelatin; hydrogels; immobilized enzymes; pH; thermal stability;     Show all 9 Subjects
Abstract:
... Hydrogel-based matrix prepared using biopolymers is a new frontier of emerging platforms for enzyme immobilization for biomedical applications. Catalase (CAT) delivery can be effective in inhibiting reactive oxygen species (ROS)-mediated prolongation of the wound healing process. In this study, to improve CAT stability for effective application, gelatin(Gel)–alginate (Alg) biocompatible hydrogel ( ...
DOI:
10.1007/s13205-022-03131-4

17. Atmospheric persistence and toxicity evolution for fluorinated biphenylethyne liquid crystal monomers unveiled by in silico methods

Author:
Yu Huang; Xiao Zhang; Chao Li; Yuanhui Zhao; Ya-nan Zhang; Jiao Qu
Source:
Journal of hazardous materials 2022 v.424 pp. 127519
ISSN:
0304-3894
Subject:
half life,   etc   ; benzoic acid; computer simulation; epoxides; hydrogen; liquid crystals; reaction mechanisms; toxicity;     Show all 8 Subjects
Abstract:
... It is essential to understand the atmospheric fate of liquid crystal monomers (LCMs), an important component in liquid crystal displays (LCDs); however, limited information is available at present. In this study, the atmospheric reaction mechanism, kinetics and toxicity evolution of three fluorinated biphenylethyne LCMs (1,2,3−trifluoro−5−(2−(4−methylphenyl)ethynyl)benzene (m−TEB), 1,2,3−trifluoro ...
DOI:
10.1016/j.jhazmat.2021.127519

18. Estimation of carbon stocks in harvested wood products of buildings in Japan: flux-data method and direct inventory method

Author:
Ryoto Matsumoto; Chihiro Kayo
Source:
Journal of wood science 2022 v.68 no.1 pp. 26
ISSN:
1435-0211
Subject:
half life,   etc   ; Japan; United Nations Framework Convention on Climate Change; carbon; inventories; roundwood;     Show all 6 Subjects
Abstract:
... In this study, carbon stocks in harvested wood products (HWPs) of buildings in Japan were estimated using the direct inventory method, which is highly accurate, and the flux-data method, which was proposed by the Intergovernmental Panel on Climate Change (IPCC) and is commonly used worldwide. We analyzed the differences between the estimated results and the respective reasons. The results indicate ...
DOI:
10.1186/s10086-022-02035-4

19. Evaluation of volatile organic compound (VOC) emissions from memory foam mattresses and potential implications for consumer health risk

Author:
E.M. Beckett; E. Miller; K. Unice; E. Russman; J.S. Pierce
Source:
Chemosphere 2022 v.303 pp. 134945
ISSN:
0045-6535
Subject:
half life,   etc   ; acetone; air quality; foams; isopropyl alcohol; methyl chloride; models; risk; toluene;     Show all 9 Subjects
Abstract:
... Chemical emissions from two new memory foam mattresses were evaluated in a simulated consumer use environment over the course of 32 days. Passive 12- and 24-h samples (n = 62) were collected for various VOCs. Airborne concentrations of chemicals associated with the mattresses (2-propanol, acetone, chloromethane, toluene, and ΣVOC) peaked during the first day after installation and progressively de ...
DOI:
10.1016/j.chemosphere.2022.134945

20. Fate of thiamethoxam from treated seeds in mesocosms and response of aquatic invertebrate communities

Author:
A. K. Vanderpont; C. Lobson; Z. Lu; K. Luong; M. Arentsen; T. Vera; D. Moore; M. S. White; R. S. Prosser; C. S. Wong; M. L. Hanson
Source:
Ecotoxicology 2022 v.31 no.2 pp. 341-356
ISSN:
0963-9292
Subject:
half life,   etc   ; agroecosystems; aquatic insects; canola; community structure; ecotoxicology; risk; thiamethoxam; wetlands; zooplankton;     Show all 10 Subjects
Abstract:
... Thiamethoxam is a neonicotinoid insecticide widely applied in the Canadian Prairies. It has been detected in surface waters of agro-ecosystems, including wetlands, but the potential effects on non-target invertebrate communities in these wetlands have not been well characterized. In an effort to understand better the fate of thiamethoxam in wetlands and the response of invertebrates (zooplankton a ...
DOI:
10.1007/s10646-021-02500-8