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Levels of toxic metals in Dutch cucumbers biofortified (Fe–Zn) with chemically-modified spent coffee grounds 用化学改性的废咖啡渣生物强化(铁锌)荷兰黄瓜中有毒金属的水平
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-30 DOI: 10.1016/j.chemosphere.2025.144550
Miguel Navarro-Moreno , Ana Cervera-Mata , Alejandro Fernández-Arteaga , Silvia Pastoriza , Leslie Lara-Ramos , Gabriel Delgado , Miguel Navarro-Alarcón , José Ángel Rufián-Henares
{"title":"Levels of toxic metals in Dutch cucumbers biofortified (Fe–Zn) with chemically-modified spent coffee grounds","authors":"Miguel Navarro-Moreno ,&nbsp;Ana Cervera-Mata ,&nbsp;Alejandro Fernández-Arteaga ,&nbsp;Silvia Pastoriza ,&nbsp;Leslie Lara-Ramos ,&nbsp;Gabriel Delgado ,&nbsp;Miguel Navarro-Alarcón ,&nbsp;José Ángel Rufián-Henares","doi":"10.1016/j.chemosphere.2025.144550","DOIUrl":"10.1016/j.chemosphere.2025.144550","url":null,"abstract":"<div><div>Spent coffee grounds (SCGs) are a form of biowaste that can be reused in agronomic biofortification with Zn and Fe to enhance environmental sustainability. Various chemical treatments of SCGs have been explored to reduce their known phytotoxicity. The aim of this study was to evaluate how different chemically modified SCGs used as soil amendments for iron (Fe) and zinc (Zn) biofortification of Dutch cucumbers under greenhouse conditions influence the accumulation of arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb). Cucumbers grown with SCGs activated with sodium hydroxide (NaOH) (ASCG) and all SCG-based biochelates showed reduced Cd concentrations compared to the control group (p &lt; 0.05). Activated hydrochar derived from SCGs and functionalized with Fe (biochelate: AH160-Fe; 0.027 ± 0.019 μg kg<sup>−1</sup>, fresh weight, f.w), or ASCG functionalized with Zn (biochelate: ASCG-Zn; 0.033 ± 0.025 μg kg<sup>−1</sup>), reduced Hg levels relative to the control (0.050 ± 0.035 μg kg<sup>−1</sup>; p &lt; 0.05). Activated hydrochar produced from SCGs heated at 160 °C (AH160) decreased As concentrations (7.69 ± 1.41 μg kg<sup>−1</sup>) compared to commercial Zn and Fe chelates (control-Zn: 9.57 ± 1.70 μg kg<sup>−1</sup> and control-Fe: 8.28 ± 1.38 μg kg<sup>−1</sup>, respectively; p &lt; 0.05). AH160 functionalized with Zn (biochelate AH160-Zn) and Fe (biochelate AH160-Fe) reduced As and Hg concentrations (8.51 ± 2.34 and 0.027 ± 0.019 μg kg<sup>−1</sup>, respectively) compared to control-Zn and control-Fe (9.57 ± 1.70 and 0.049 ± 0.041 μg kg<sup>−1</sup>, respectively; p &lt; 0.05). Cucumbers harvested at later stages exhibited higher As and Cd levels, in contrast to Hg and Pb, which decreased over time. In conclusion, the four biochelates (ASCG-Zn, AH160-Zn, ASCG-Fe, and AH160-Fe) reduced Cd bioavailability in cucumbers (0.120, 0.126, 0.122, and 0.136 μg kg<sup>−1</sup>, respectively), with ASCG-Zn and ASCG-Fe showing the most significant effect compared to the control (0.156 μg kg<sup>−1</sup>). The tested biochelates present a promising alternative to commercial Zn and Fe chelates, enabling biofortification while simultaneously lowering Cd, Hg, and As levels. In subsequent harvests, As and Cd levels tend to increase, whereas Hg and Pb levels decrease. None of the estimated daily intakes of the analyzed toxic metals (0.0439, 0.0007, 0.0002, and 0.0027 μg day<sup>−1</sup> for As, Cd, Hg, and Pb, respectively) pose a risk to human health.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144550"},"PeriodicalIF":8.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Response to the letter to the editor 回复给编辑的信
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-30 DOI: 10.1016/j.chemosphere.2025.144547
Megan Liu , Sicco H. Brandsma , Erika Schreder
{"title":"Response to the letter to the editor","authors":"Megan Liu ,&nbsp;Sicco H. Brandsma ,&nbsp;Erika Schreder","doi":"10.1016/j.chemosphere.2025.144547","DOIUrl":"10.1016/j.chemosphere.2025.144547","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144547"},"PeriodicalIF":8.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Covalent and non-covalent carbon nanotube functionalization: A review for the case of assessment criteria, and practical implementation in wastewater treatment 共价和非共价碳纳米管功能化:评价标准的案例综述及其在废水处理中的实际应用
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-30 DOI: 10.1016/j.chemosphere.2025.144549
Mayowa Ezekiel Oladipo , Samuel Sunday Ogunsola , Peter Olusakin Oladoye
{"title":"Covalent and non-covalent carbon nanotube functionalization: A review for the case of assessment criteria, and practical implementation in wastewater treatment","authors":"Mayowa Ezekiel Oladipo ,&nbsp;Samuel Sunday Ogunsola ,&nbsp;Peter Olusakin Oladoye","doi":"10.1016/j.chemosphere.2025.144549","DOIUrl":"10.1016/j.chemosphere.2025.144549","url":null,"abstract":"<div><div>The rising occurrence of complex and persistent pollutants in aquatic ecosystems has resulted in an increased demand for advanced treatment materials, positioning carbon nanotubes (CNTs) as a highly promising option for wastewater treatment. Owing to their remarkable adsorption properties, structural flexibility, and versatility when compared to conventional materials, research on CNTs is both vital and necessary for the advancement of next-generation water purification technologies. This study presents a comprehensive review of the current literature concerning the adsorption properties of CNTs, systematically evaluating various functionalization methods that enhance the solubility and dispersion of CNTs in aqueous environments, as well as the ways in which these modifications improve adsorption of pollutants. This review specifically emphasizes the comparative benefits and drawbacks of covalent and non-covalent functionalization methods based on assessment criteria, practical application, and feasibility, providing valuable insights into their real-world applications and future potential, ultimately guiding the selection and development of optimized CNT-based systems for effective wastewater treatment.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144549"},"PeriodicalIF":8.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of anions on black carbon generation and formation mechanism of magnetic black carbon during coal combustion 阴离子对煤燃烧过程中黑碳生成的影响及磁性黑碳的形成机理
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-30 DOI: 10.1016/j.chemosphere.2025.144546
Yixin Shen , ShangRu Chen , YouYing Chen , ShiYun Xiao , Lei Zhang , YiBo Zhao , ShengKang Wang , XueSong Wang
{"title":"Influence of anions on black carbon generation and formation mechanism of magnetic black carbon during coal combustion","authors":"Yixin Shen ,&nbsp;ShangRu Chen ,&nbsp;YouYing Chen ,&nbsp;ShiYun Xiao ,&nbsp;Lei Zhang ,&nbsp;YiBo Zhao ,&nbsp;ShengKang Wang ,&nbsp;XueSong Wang","doi":"10.1016/j.chemosphere.2025.144546","DOIUrl":"10.1016/j.chemosphere.2025.144546","url":null,"abstract":"<div><div>Coal used in thermal power plants frequently contains various anions, and to investigate whether these anions influence the formation of black carbon (BC) from incomplete coal combustion, we conducted simulated combustion experiments by adding iron salts containing common coal-derived anions to purified coal. Comparative analysis of combustion products revealed that acidic anions, particularly sulfate ions, released from iron salts during combustion tend to form acidic gases that corrode BC surfaces, thereby generating more porous and morphologically complex BC structures while simultaneously suppressing BC yield. In contrast, basic anions such as hydroxide ions exhibited a modest promoting effect on BC production. Quantum chemical calculations and literature review confirmed that various anions, when thermally released in gaseous form, significantly affect both the morphological characteristics and yield of BC. Furthermore, the same anion demonstrated varying effects depending on the properties of its carrier matrix. Through combined quantum chemical calculations and synchrotron radiation analysis, we elucidated the formation mechanism of magnetic black carbon (MBC): iron salts mixed with coal first release their anions upon heating while being oxidised to Fe<sub>2</sub>O<sub>3</sub>; subsequently, after substantial BC generation at high temperatures, Fe<sub>2</sub>O<sub>3</sub> chemically adsorbs onto BC through Fe–C bond formation; finally, under sustained high temperatures, Fe<sub>2</sub>O<sub>3</sub> reduces to Fe<sub>3</sub>O<sub>4</sub> to form MBC. This comprehensive investigation provides fundamental insights into the anion-mediated regulation of BC properties during coal combustion.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144546"},"PeriodicalIF":8.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Human exposure and toxicity of per- and polyfluoroalkyl substances: Narrative review and perspectives 人类接触全氟烷基和多氟烷基物质及其毒性:叙述性审查和观点
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-28 DOI: 10.1016/j.chemosphere.2025.144508
Yukiko Fujii , Yasuyuki Shibata , Yasuharu Tokuda , Yuki Ito , Naomi Kudo , Kouji H. Harada
{"title":"Human exposure and toxicity of per- and polyfluoroalkyl substances: Narrative review and perspectives","authors":"Yukiko Fujii ,&nbsp;Yasuyuki Shibata ,&nbsp;Yasuharu Tokuda ,&nbsp;Yuki Ito ,&nbsp;Naomi Kudo ,&nbsp;Kouji H. Harada","doi":"10.1016/j.chemosphere.2025.144508","DOIUrl":"10.1016/j.chemosphere.2025.144508","url":null,"abstract":"<div><div>In this paper, the status of per- and polyfluoroalkyl substances (PFAS) is narratively reviewed from the perspective of toxicity mechanisms, biodistribution, species differences, human exposure sources, human biomonitoring, and epidemiology. Although toxicological investigations have been conducted, interspecies differences in toxicological mechanisms and toxicokinetics are not fully understood. For example, peroxisome proliferator-activated receptors (PPARα) are a target receptor of PFAS. Although there are distinct differences in response between rodents and humans, human PPARα can be activated at a high dose and PPARα-independent effects are also observed. In addition, epidemiological studies provide mechanistic evidence in carcinogenesis (epigenetics and immunomodulation). In humans, the biological half-lives of several PFAS over years are longer than in other species because of low renal clearance. Genetic differences in transporter proteins (e.g. OAT) may explain the long half-lives in humans. We present data from Japan for human exposure and biomonitoring. Exposure to PFAS is still caused via contaminated drinking water and consumption of contaminated foods around military bases (Okinawa, western Tokyo, etc.) and fluorochemical plants (Osaka, etc) due to past PFAS uses. Even without specific contamination, seafood consumption is a common route of exposure in Japan and East Asian countries, resulting in elevated baseline in blood PFAS levels. For sustainable economic progress, it is necessary to properly prevent or manage the negative effects of various chemicals while making good use of their positive characteristics. Consequently, it is necessary to understand their mechanisms of toxicity, elucidate the kinetics in the human body, and consider combined exposure effects. A normative approach and establishment of a management system are required for PFAS in the future.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144508"},"PeriodicalIF":8.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gas and tar formation characteristics in gasification for biomass materials 生物质气化过程中气体和焦油的形成特征
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-27 DOI: 10.1016/j.chemosphere.2025.144535
Katsuya Kawamoto
{"title":"Gas and tar formation characteristics in gasification for biomass materials","authors":"Katsuya Kawamoto","doi":"10.1016/j.chemosphere.2025.144535","DOIUrl":"10.1016/j.chemosphere.2025.144535","url":null,"abstract":"<div><div>Gas and tar formation characteristics from the gasification of woody biomass were investigated by experimentation to obtain detailed and specific insights into the proper operation of the gasification process. We focused on the determination of the relationship between the gasification operation parameters and the composition of the resulting gases and catalyst application on tar formation and suppression. The generation of combustible gases, including hydrogen (H<sub>2</sub>), by biomass gasification increased with increasing temperature and the addition of water vapor. A sufficiently high temperature (850 °C or higher) was required to effectively suppress tar production without the use of a catalyst. However, the choice of higher temperatures should be carefully considered in terms of energy loss. The nickel (Ni) mesoporous catalyst exhibited the highest catalytic effect on gasification and the catalyst application resulted in more than 50 %(V/V) H<sub>2</sub> composition in the product gas. The application of combustion ash and dolomite resulted in the second highest H<sub>2</sub> production effect after Ni catalyst. The reduction of tar formation by Ni catalyst reached 84 % at 750 °C. The relationships between various factors such as temperature and the proportion of polycyclic aromatic hydrocarbon (PAH) compounds in tar were examined. The PAH ratio in tar was shown to be a simple and clear indicator of the effect of temperature and catalyst application on tar reduction.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144535"},"PeriodicalIF":8.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing neurological and cardiovascular effects caused by pharmaceuticals in river water: Insights from Daphnia magna and Danio rerio embryos 评估河水中药物对神经系统和心血管的影响:来自大水蚤和达尼奥胚胎的见解
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-27 DOI: 10.1016/j.chemosphere.2025.144541
Irene Romero-Alfano , Eva Prats , Demetrio Raldúa , Mercedes Blazquez , Romà Tauler , Benjamí Piña , Cristian Gómez-Canela , Carlos Barata
{"title":"Assessing neurological and cardiovascular effects caused by pharmaceuticals in river water: Insights from Daphnia magna and Danio rerio embryos","authors":"Irene Romero-Alfano ,&nbsp;Eva Prats ,&nbsp;Demetrio Raldúa ,&nbsp;Mercedes Blazquez ,&nbsp;Romà Tauler ,&nbsp;Benjamí Piña ,&nbsp;Cristian Gómez-Canela ,&nbsp;Carlos Barata","doi":"10.1016/j.chemosphere.2025.144541","DOIUrl":"10.1016/j.chemosphere.2025.144541","url":null,"abstract":"<div><div>Pharmaceutical residues in surface waters are an emerging environmental and public health issue, yet their biological impacts on aquatic life remain poorly understood. This study presents a cost-effective bioanalytical framework using <em>Daphnia magna</em> juveniles and zebrafish (<em>Danio rerio</em>) embryos to evaluate neurotoxic and cardiotoxic effects of pharmaceutical mixtures in rivers downstream of wastewater treatment plant (WWTP) effluents. Water samples from three rivers in north-eastern Spain (Besòs, Llobregat, and Onyar) were concentrated up to 5- and 20-fold using solid-phase extraction. Bioassays were conducted over 24 h for <em>D. magna</em> and five days for zebrafish embryos.</div><div>Eighty pharmaceutical compounds were quantified via HPLC-MS and linked with phenotypic endpoints including locomotion, feeding, heart rate, neurotransmitter profiles, and metabolomic alterations. Of the 28 concentrated extracts, four were acutely toxic to zebrafish embryos. Altered behavioral and cardiovascular responses were observed in 22.2 % (<em>D. magna</em>) and 35.1 % (<em>D. rerio</em>) of extracts, primarily at higher enrichment. Concentrations of 31 pharmaceuticals were statistically associated with observed effects. Neuroactive drugs such as topiramate, rasagiline, citalopram, and fluvoxamine showed strong correlations with altered neurotransmitter levels in zebrafish, consistent with their known mechanisms. Seven additional compounds with secondary neuroactive properties were linked to similar neurological disruptions. Seventeen pharmaceuticals were associated with disturbances in amino acid metabolism and urea cycle pathways, indicating broader metabolic dysregulation.</div><div>Overall, nearly 75 % of river extracts showed no observable effect, but several samples were acutely toxic or induced sublethal neurobehavioral and metabolic responses. These findings support the utility of <em>D. magna</em> and zebrafish (<em>D. rerio</em>) embryos as sensitive and complementary biosentinels for monitoring pharmaceutical pollution and highlight zebrafish as a relevant model for studying environmentally driven neurotoxicity with potential human health implications.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144541"},"PeriodicalIF":8.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dimensionless analytical model for non-ideal breakthrough in fixed beds: Application to trivalent amphoteric oxide sorbent materials 固定床非理想突破的无量纲分析模型:在三价两性氧化物吸附材料中的应用
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-27 DOI: 10.1016/j.chemosphere.2025.144525
Rachael Z. Cooper, Chase Royall, Sarina J. Ergas, Mahmood Nachabe
{"title":"Dimensionless analytical model for non-ideal breakthrough in fixed beds: Application to trivalent amphoteric oxide sorbent materials","authors":"Rachael Z. Cooper,&nbsp;Chase Royall,&nbsp;Sarina J. Ergas,&nbsp;Mahmood Nachabe","doi":"10.1016/j.chemosphere.2025.144525","DOIUrl":"10.1016/j.chemosphere.2025.144525","url":null,"abstract":"<div><div>Novel analytical solutions were developed to simulate breakthrough curves from flow-through columns with trivalent amphoteric oxide sorbent material. When the rate of sorption is slow compared to the rate of advection, sorption is limited by the rate of mass transfer of pollutants from the liquid to the solid phase. The two coupled differential equations for liquid and solid phase concentrations were solved analytically and valuable, simple analytical solutions emerged with two dimensionless parameters: 1) γ, the sorptive potential of the material, and 2) Da, the Dämkohler number, representing the ratio of mass transfer rate to the advection rate through the material. The solutions can guide the design of sorption systems to achieve a target removal percent or determine the number of pore volumes that can be treated before the material must be disposed or regenerated. The equations were tested using experimental data from four columns operated with phosphate sorption media at varying hydraulic loading rates to evaluate the analytical approach's scalability. The analytical solution captured the breakthrough curves using a least square fit. A noted advantage of the analytical solutions is the ease of application to rapidly screen sorptive materials and to select suitable hydraulic and pollutant loading rates.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144525"},"PeriodicalIF":8.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Florida red tides and adverse birth outcomes: Investigating harmful algae as a novel environmental exposure 佛罗里达赤潮和不良出生结果:调查有害藻类作为一种新的环境暴露
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-27 DOI: 10.1016/j.chemosphere.2025.144536
Rain E. Freeman , Quynh A. Nguyen , Sandy Haaf , Jason L. Salemi , Catherine M. Bulka
{"title":"Florida red tides and adverse birth outcomes: Investigating harmful algae as a novel environmental exposure","authors":"Rain E. Freeman ,&nbsp;Quynh A. Nguyen ,&nbsp;Sandy Haaf ,&nbsp;Jason L. Salemi ,&nbsp;Catherine M. Bulka","doi":"10.1016/j.chemosphere.2025.144536","DOIUrl":"10.1016/j.chemosphere.2025.144536","url":null,"abstract":"<div><div>Algal blooms have been linked to adverse human health, but little is known about early life exposures. This ecologic study leveraged the 2016–2018 ‘red tide’ blooms to investigate effects on birth outcomes among Florida Gulf coast residents. We estimated <em>K. brevis</em> concentrations and prevailing wind directions from June through October annually. We spatiotemporally linked these data with monthly counts of preterm, term low birthweight, and total live births to residents of coastal census tracts. Tract residents were considered ‘exposed’ when <em>K. brevis</em> in local waters exceeded various thresholds and winds blew onshore. Using a staggered difference-in-differences design, we compared preterm birth and term low birthweight birth rates pre- and post-exposure under different latency scenarios. Among 200 coastal tracts, 85 % neighbored waters where <em>K. brevis</em> exceeded 10,000 cells/L. Elevated <em>K. brevis</em> with onshore winds was associated with a concurrent decrease of 9.52 (95 % CI: 14.70, −4.70) preterm births per 100 live births, though lagged associations were statistically insignificant. Models of term low birthweight, which generally showed null associations for <em>K. brevis</em> elevations, had parallel trends violations, such that the results should be interpreted with caution. Since red tides occur in the warm season and high temperatures can increase the risk of preterm birth, it is possible that bloom-related odors and respiratory irritation prompted pregnant residents to stay indoors, avoiding the heat and potentially explaining the observed protective effect. However, the lack of individual-level, spatiotemporally-refined exposure measurements likely introduced misclassification. Future work should focus on improving exposure assessment methods and controlling for confounding by weather to clarify health risks from red tide exposures during pregnancy.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144536"},"PeriodicalIF":8.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced ammonia nitrogen filtration using NaOH-activated Manihot utilissima peel carbon: Application in recirculating aquaculture systems for Nile tilapia naoh活化manhot utilissima peel炭强化氨氮过滤:在尼罗罗非鱼循环水养殖系统中的应用
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2025-06-25 DOI: 10.1016/j.chemosphere.2025.144537
Said Ali Akbar , Muhammad Hasan , Zulkarnain Jalil , Ilham Zulfahmi , Muhammad Iqhrammullah , Nila Safina
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