ACS Environmental Au最新文献

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Predicting Potential Climate Change Impacts on Groundwater Nitrate Pollution and Risk in an Intensely Cultivated Area of South Asia 预测气候变化对南亚集约化耕地地下水硝酸盐污染的潜在影响及其风险
ACS Environmental Au Pub Date : 2022-09-01 DOI: 10.1021/acsenvironau.2c00042
Soumyajit Sarkar, Abhijit Mukherjee*, Balaji Senapati and Srimanti Duttagupta, 
{"title":"Predicting Potential Climate Change Impacts on Groundwater Nitrate Pollution and Risk in an Intensely Cultivated Area of South Asia","authors":"Soumyajit Sarkar,&nbsp;Abhijit Mukherjee*,&nbsp;Balaji Senapati and Srimanti Duttagupta,&nbsp;","doi":"10.1021/acsenvironau.2c00042","DOIUrl":"10.1021/acsenvironau.2c00042","url":null,"abstract":"<p >One of the potential impacts of climate change is enhanced groundwater contamination by geogenic and anthropogenic contaminants. Such impacts should be most evident in areas with high land-use change footprint. Here, we provide a novel documentation of the impact on groundwater nitrate (GW<sub>NO<sub>3</sub></sub>) pollution with and without climate change in one of the most intensely groundwater-irrigated areas of South Asia (northwest India) as a consequence of changes in land use and agricultural practices at present and predicted future times. We assessed the probabilistic risk of GW<sub>NO<sub>3</sub></sub> pollution considering climate changes under two representative concentration pathways (RCPs), i.e., RCP 4.5 and 8.5 for 2030 and 2040, using a machine learning (Random Forest) framework. We also evaluated variations in GW<sub>NO<sub>3</sub></sub> distribution against a no climate change (NCC) scenario considering 2020 status quo climate conditions. The climate change projections showed that the annual temperatures would rise under both RCPs. The precipitation is predicted to rise by 5% under RCP 8.5 by 2040, while it would decline under RCP 4.5. The predicted scenarios indicate that the areas at high risk of GW<sub>NO<sub>3</sub></sub> pollution will increase to 49 and 50% in 2030 and 66 and 65% in 2040 under RCP 4.5 and 8.5, respectively. These predictions are higher compared to the NCC condition (43% in 2030 and 60% in 2040). However, the areas at high risk can decrease significantly by 2040 with restricted fertilizer usage, especially under the RCP 8.5 scenario. The risk maps identified the central, south, and southeastern parts of the study area to be at persistent high risk of GW<sub>NO<sub>3</sub></sub> pollution. The outcomes show that the climate factors may impose a significant influence on the GW<sub>NO<sub>3</sub></sub> pollution, and if fertilizer inputs and land uses are not managed properly, future climate change scenarios can critically impact the groundwater quality in highly agrarian areas.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ca/1b/vg2c00042.PMC10125289.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9349325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cancer and Ongoing Climate Change: Who Are the Most Affected? 癌症和持续的气候变化:谁受影响最大?
ACS Environmental Au Pub Date : 2022-08-31 DOI: 10.1021/acsenvironau.2c00012
Pei Yu, Rongbin Xu, Zhengyu Yang, Tingting Ye, Yanming Liu, Shanshan Li, Michael J Abramson, Michael Kimlin and Yuming Guo*, 
{"title":"Cancer and Ongoing Climate Change: Who Are the Most Affected?","authors":"Pei Yu,&nbsp;Rongbin Xu,&nbsp;Zhengyu Yang,&nbsp;Tingting Ye,&nbsp;Yanming Liu,&nbsp;Shanshan Li,&nbsp;Michael J Abramson,&nbsp;Michael Kimlin and Yuming Guo*,&nbsp;","doi":"10.1021/acsenvironau.2c00012","DOIUrl":"10.1021/acsenvironau.2c00012","url":null,"abstract":"<p >Cancer has become the leading cause of premature death in many counties in recent decades. Previous studies showed plenty of evidence that control of modifiable risk factors would reduce the cancer burden. Since modifiable risk factors could be eliminated by changing the lifestyles of individuals, a greater uptake of modifiable risk factors is critical to reducing cancer burden and inequality in cancer survival. However, climate change will widen cancer inequities through its complex connections with modifiable risk factors. In this perspective, complex connections between climate change and cancer risks via modifiable risk factors, including abnormal temperature, UV, air pollution, natural disasters, food (diet), water, infections, and inefficient physical activities, have been summarized. The associations between climate change and modifiable risk factors have no doubt expanded the inequities. People who face overlapping modifiable risk factors, but who are unable to change or adapt, are at the highest risk in the climate change–cancer linkage. Though individual actions to avoid exposure to modifiable risk factors have been recommended, limited benefits would be achieved unless the nations strive to ensure the basic needs of the people. No choice makes avoiding exposure to risk factors an empty phrase. Thus, government actions should be taken to reduce the expanded inequities in cancer risks.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4a/a4/vg2c00012.PMC9853937.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9183256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effects of Weathering on Microplastic Dispersibility and Pollutant Uptake Capacity 风化对微塑料分散性和污染物吸收能力的影响
ACS Environmental Au Pub Date : 2022-08-31 DOI: 10.1021/acsenvironau.2c00036
Ahmed Al Harraq, Philip J. Brahana, Olivia Arcemont, Donghui Zhang, Kalliat T. Valsaraj and Bhuvnesh Bharti*, 
{"title":"Effects of Weathering on Microplastic Dispersibility and Pollutant Uptake Capacity","authors":"Ahmed Al Harraq,&nbsp;Philip J. Brahana,&nbsp;Olivia Arcemont,&nbsp;Donghui Zhang,&nbsp;Kalliat T. Valsaraj and Bhuvnesh Bharti*,&nbsp;","doi":"10.1021/acsenvironau.2c00036","DOIUrl":"10.1021/acsenvironau.2c00036","url":null,"abstract":"<p >Microplastics are ubiquitous in the environment, leading to a new form of plastic pollution crisis, which has reached an alarming level worldwide. Micron and nanoscale plastics may get integrated into ecological cycles with detrimental effects on various ecosystems. Commodity plastics are widely considered to be chemically inert, and alterations in their surface properties due to environmental weathering are often overlooked. This lack of knowledge on the dynamic changes in the surface chemistry and properties of (micro)plastics has impeded their life-cycle analysis and prediction of their fate in the environment. Through simulated weathering experiments, we delineate the role of sunlight in modifying the physicochemical properties of microplastics. Within 10 days of accelerated weathering, microplastics become dramatically more dispersible in the water column and can more than double the surface uptake of common chemical pollutants, such as malachite green and lead ions. The study provides the basis for identifying the elusive link between the surface properties of microplastics and their fate in the environment.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9673469/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9346331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Monitoring Mixture Effects of Neurotoxicants in Surface Water and Wastewater Treatment Plant Effluents with Neurite Outgrowth Inhibition in SH-SY5Y Cells 监测地表水和污水处理厂流出物中神经毒物对SH-SY5Y细胞神经突生长抑制的混合效应
ACS Environmental Au Pub Date : 2022-08-17 DOI: 10.1021/acsenvironau.2c00026
Jungeun Lee, Rita Schlichting, Maria König, Stefan Scholz, Martin Krauss and Beate I. Escher*, 
{"title":"Monitoring Mixture Effects of Neurotoxicants in Surface Water and Wastewater Treatment Plant Effluents with Neurite Outgrowth Inhibition in SH-SY5Y Cells","authors":"Jungeun Lee,&nbsp;Rita Schlichting,&nbsp;Maria König,&nbsp;Stefan Scholz,&nbsp;Martin Krauss and Beate I. Escher*,&nbsp;","doi":"10.1021/acsenvironau.2c00026","DOIUrl":"10.1021/acsenvironau.2c00026","url":null,"abstract":"<p >Cell-based assays covering environmentally relevant modes of action are widely used for water quality monitoring. However, no high-throughput assays are available for testing developmental neurotoxicity of water samples. We implemented an assay that quantifies neurite outgrowth, which is one of the neurodevelopmental key events, and cell viability in human neuroblastoma SH-SY5Y cells using imaging techniques. We used this assay for testing of extracts of surface water collected in agricultural areas during rain events and effluents from wastewater treatment plants (WWTPs), where more than 200 chemicals had been quantified. Forty-one chemicals were tested individually that were suspected to contribute to the mixture effects among the detected chemicals in environmental samples. Sample sensitivity distributions indicated higher neurotoxicity for surface water samples than for effluents, and the endpoint of neurite outgrowth inhibition was six times more sensitive than cytotoxicity in the surface water samples and only three times more sensitive in the effluent samples. Eight environmental pollutants showed high specificity, and those ranged from pharmaceuticals (mebendazole and verapamil) to pesticides (methiocarb and clomazone), biocides (1,2-benzisothiazolin-3-one), and industrial chemicals (<i>N</i>-methyl-2-pyrrolidone, 7-diethylamino-4-methylcoumarin, and 2-(4-morpholinyl)benzothiazole). Although neurotoxic effects were newly detected for some of our test chemicals, less than 1% of the measured effects were explained by the detected and toxicologically characterized chemicals. The neurotoxicity assay was benchmarked against other bioassays: activations of the aryl hydrocarbon receptor and the peroxisome proliferator-activated receptor were similar in sensitivity, highly sensitive and did not differ much between the two water types, with surface water having slightly higher effects than the WWTP effluent. Oxidative stress response mirrored neurotoxicity quite well but was caused by different chemicals in the two water types. Overall, the new cell-based neurotoxicity assay is a valuable complement to the existing battery of effect-based monitoring tools.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/10/6d/vg2c00026.PMC10125335.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9361903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Upcycling of Plastic Wastes and Biomass for Sustainable Graphitic Carbon Production: A Critical Review 塑料废物和生物质的升级回收用于可持续石墨碳生产:综述
ACS Environmental Au Pub Date : 2022-08-12 DOI: 10.1021/acsenvironau.2c00029
Haftom Weldekidan, Amar K. Mohanty* and Manjusri Misra, 
{"title":"Upcycling of Plastic Wastes and Biomass for Sustainable Graphitic Carbon Production: A Critical Review","authors":"Haftom Weldekidan,&nbsp;Amar K. Mohanty* and Manjusri Misra,&nbsp;","doi":"10.1021/acsenvironau.2c00029","DOIUrl":"10.1021/acsenvironau.2c00029","url":null,"abstract":"<p >Upcycling of waste plastics diverts plastics from landfill, which helps in reducing greenhouse gas emissions. Graphitic carbon is an interesting material with a wide range of applications in electronics, energy storage, fuel cells, and even as advanced fillers for polymer composites. It is a very strong and highly conductive material consisting of weakly bound graphene layers arranged in a hexagonal structure. There are different ways of synthesizing graphitic carbons, of which the co-pyrolysis of biomass and plastic wastes is a promising approach for large-scale production. Highly graphitized carbon with surface areas in the range of 201 m<sup>2</sup>/g was produced from the co-pyrolysis of polyethylene and pinewood at 600 °C. Similarly, porous carbon having a superior discharge capacity (290 mAh/g) was developed from the co-pyrolysis of sugar cane and plastic polymers with catalysts. The addition of plastic wastes including polyethylene and high-density polyethylene to the pyrolysis of biomass tends to increase the surface area and improve the discharge capacity of the produced graphitic carbons. Likewise, temperature plays an important role in enhancing the carbon content and thereby the quality of the graphitic carbon during the co-pyrolysis process. The application of metal catalysts can reduce the graphitization temperature while at the same time improve the quality of the graphitic carbon by increasing the carbon contents. This work reports some typical graphitic carbon preparation methods from the co-pyrolysis of biomass and plastic wastes for the first time including thermochemical methods, exfoliation methods, template-based production methods, and salt-based methods. The factors affecting the graphitic char quality during the conversion processes are reviewed critically. Moreover, the current state-of-the-art characterization technologies such as Raman, scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy are discussed in detail, and finally, an overview on the applications, scalability, and future trends of graphitic-like carbons is highlighted.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fb/1c/vg2c00029.PMC9673229.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40478415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Assessing the Persistence and Mobility of Organic Substances to Protect Freshwater Resources 评估有机物质的持久性和流动性以保护淡水资源
ACS Environmental Au Pub Date : 2022-08-02 DOI: 10.1021/acsenvironau.2c00024
Hans Peter H. Arp*,  and , Sarah E. Hale, 
{"title":"Assessing the Persistence and Mobility of Organic Substances to Protect Freshwater Resources","authors":"Hans Peter H. Arp*,&nbsp; and ,&nbsp;Sarah E. Hale,&nbsp;","doi":"10.1021/acsenvironau.2c00024","DOIUrl":"10.1021/acsenvironau.2c00024","url":null,"abstract":"<p >Persistent and mobile organic substances are those with the highest propensity to be widely distributed in groundwater and thereby, when emitted at low-levels, to contaminate drinking water extraction points and freshwater environments. To prevent such contamination, the European Commission is in the process of introducing new hazard classes for persistent, mobile, and toxic (PMT) and very persistent and very mobile (vPvM) substances within its key chemical regulations CLP and REACH. The assessment of persistence in these regulations will likely be based on simulated half-life, <i>t</i><sub>1/2</sub>, thresholds; the assessment of mobility will likely be based on organic carbon–water distribution coefficient, <i>K</i><sub>OC</sub>, thresholds. This study reviews the use of <i>t</i><sub>1/2</sub> and <i>K</i><sub>OC</sub> to describe persistence and mobility, considering the theory, history, suitability, data limitations, estimation methods, and alternative parameters. For this purpose, <i>t</i><sub>1/2</sub>, <i>K</i><sub>OC</sub>, and alternative parameters were compiled for substances registered under REACH, known transformation products, and substances detected in wastewater treatment plant effluent, surface water, bank filtrate, groundwater, raw water, and drinking water. Experimental <i>t</i><sub>1/2</sub> values were rare and only available for 2.2% of the 14 203 unique chemicals identified. <i>K</i><sub>OC</sub> data were only available for a fifth of the substances. Therefore, the usage of alternative screening parameters was investigated to predict <i>t</i><sub>1/2</sub> and <i>K</i><sub>OC</sub> values, to assist weight-of-evidence based PMT/vPvM hazard assessments. Even when considering screening parameters, for 41% of substances, PMT/vPvM assessments could not be made due to data gaps; for 23% of substances, PMT/vPvM assessments were ambiguous. Further effort is needed to close these substantial data gaps. However, when data is available, the use of <i>t</i><sub>1/2</sub> and <i>K</i><sub>OC</sub> is considered fit-for-purpose for defining PMT/vPvM thresholds. Using currently discussed threshold values, between 1.9 and 2.6% of REACH registered substances were identified as PMT/vPvM. Among the REACH registered substances detected in drinking water sources, 24–30% were PMT/vPvM substances.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9673533/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40480825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Financial Viability and Environmental Sustainability of Fecal Sludge Treatment with Pyrolysis Omni Processors 热解Omni处理器处理粪便污泥的经济可行性和环境可持续性
ACS Environmental Au Pub Date : 2022-07-29 DOI: 10.1021/acsenvironau.2c00022
Lewis Stetson Rowles*, Victoria L. Morgan, Yalin Li, Xinyi Zhang, Shion Watabe, Tyler Stephen, Hannah A. C. Lohman, Derek DeSouza, Jeff Hallowell, Roland D. Cusick and Jeremy S. Guest*, 
{"title":"Financial Viability and Environmental Sustainability of Fecal Sludge Treatment with Pyrolysis Omni Processors","authors":"Lewis Stetson Rowles*,&nbsp;Victoria L. Morgan,&nbsp;Yalin Li,&nbsp;Xinyi Zhang,&nbsp;Shion Watabe,&nbsp;Tyler Stephen,&nbsp;Hannah A. C. Lohman,&nbsp;Derek DeSouza,&nbsp;Jeff Hallowell,&nbsp;Roland D. Cusick and Jeremy S. Guest*,&nbsp;","doi":"10.1021/acsenvironau.2c00022","DOIUrl":"10.1021/acsenvironau.2c00022","url":null,"abstract":"<p >Omni Processors (OPs) are community-scale systems for non-sewered fecal sludge treatment. These systems have demonstrated their capacity to treat excreta from tens of thousands of people using thermal treatment processes (e.g., pyrolysis), but their relative sustainability is unclear. In this study, QSDsan (an open-source Python package) was used to characterize the financial viability and environmental implications of fecal sludge treatment via pyrolysis-based OP technology treating mixed and source-separated human excreta and to elucidate the key drivers of system sustainability. Overall, the daily per capita cost for the treatment of mixed excreta (pit latrines) via the OP was estimated to be 0.05 [0.03–0.08] USD·cap<sup>–1</sup>·d<sup>–1</sup>, while the treatment of source-separated excreta (from urine-diverting dry toilets) was estimated to have a per capita cost of 0.09 [0.08–0.14] USD·cap<sup>–1</sup>·d<sup>–1</sup>. Operation and maintenance of the OP is a critical driver of total per capita cost, whereas the contribution from capital cost of the OP is much lower because it is distributed over a relatively large number of users (i.e., 12,000 people) for the system lifetime (i.e., 20 yr). The total emissions from the source-separated scenario were estimated to be 11 [8.3–23] kg CO<sub>2</sub> eq·cap<sup>–1</sup>·yr<sup>–1</sup>, compared to 49 [28–77] kg CO<sub>2</sub> eq·cap<sup>–1</sup>·yr<sup>–1</sup> for mixed excreta. Both scenarios fall below the estimates of greenhouse gas (GHG) emissions for anaerobic treatment of fecal sludge collected from pit latrines. Source-separation also creates opportunities for resource recovery to offset costs through nutrient recovery and carbon sequestration with biochar production. For example, when carbon is valued at 150 USD·Mg<sup>–1</sup> of CO<sub>2</sub>, the per capita cost of sanitation can be further reduced by 44 and 40% for the source-separated and mixed excreta scenarios, respectively. Overall, our results demonstrate that pyrolysis-based OP technology can provide low-cost, low-GHG fecal sludge treatment while reducing global sanitation gaps.</p>","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9502014/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40377411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Divergent Forms of Pyroplastic: Lessons Learned from the M/V X-Press Pearl Ship Fire 热塑性的不同形式:从M/V X-Press珍珠舰火灾中吸取的教训
ACS Environmental Au Pub Date : 2022-07-29 DOI: 10.1021/acsenvironau.2c00020
Bryan D. James*, Asha de Vos, Lihini I. Aluwihare, Sarah Youngs, Collin P. Ward, Robert K. Nelson, Anna P. M. Michel, Mark E. Hahn and Christopher M. Reddy, 
{"title":"Divergent Forms of Pyroplastic: Lessons Learned from the M/V X-Press Pearl Ship Fire","authors":"Bryan D. James*,&nbsp;Asha de Vos,&nbsp;Lihini I. Aluwihare,&nbsp;Sarah Youngs,&nbsp;Collin P. Ward,&nbsp;Robert K. Nelson,&nbsp;Anna P. M. Michel,&nbsp;Mark E. Hahn and Christopher M. Reddy,&nbsp;","doi":"10.1021/acsenvironau.2c00020","DOIUrl":"https://doi.org/10.1021/acsenvironau.2c00020","url":null,"abstract":"In late May 2021, the M/V X-Press Pearl container ship caught fire while anchored 18 km off the coast of Colombo, Sri Lanka and spilled upward of 70 billion pieces of plastic or “nurdles” (∼1680 tons), littering the country’s coastline. Exposure to combustion, heat, chemicals, and petroleum products led to an apparent continuum of changes from no obvious effects to pieces consistent with previous reports of melted and burned plastic (pyroplastic) found on beaches. At the middle of this continuum, nurdles were discolored but appeared to retain their prefire morphology, resembling nurdles that had been weathered in the environment. We performed a detailed investigation of the physical and surface properties of discolored nurdles collected on a beach 5 days after the ship caught fire and within 24 h of their arrival onshore. The color was the most striking trait of the plastic: white for nurdles with minimal alteration from the accident, orange for nurdles containing antioxidant degradation products formed by exposure to heat, and gray for partially combusted nurdles. Our color analyses indicate that this fraction of the plastic released from the ship was not a continuum but instead diverged into distinct groups. Fire left the gray nurdles scorched, with entrained particles and pools of melted plastic, and covered in soot, representing partial pyroplastics, a new subtype of pyroplastic. Cross sections showed that the heat- and fire-induced changes were superficial, leaving the surfaces more hydrophilic but the interior relatively untouched. These results provide timely and actionable information to responders to reevaluate cleanup end points, monitor the recurrence of these spilled nurdles, gauge short- and long-term effects of the spilled nurdles to the local ecosystem, and manage the recovery of the spill. These findings underscore partially combusted plastic (pyroplastic) as a type of plastic pollution that has yet to be fully explored despite the frequency at which plastic is burned globally.","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsenvironau.2c00020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72198962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Global Challenges: Opening up Chemistry, Pandemics, and Air Pollution 全球挑战:开放化学、流行病和空气污染
ACS Environmental Au Pub Date : 2022-07-20 DOI: 10.1021/acsenvironau.2c00032
Emma L. Schymanski*, 
{"title":"Global Challenges: Opening up Chemistry, Pandemics, and Air Pollution","authors":"Emma L. Schymanski*,&nbsp;","doi":"10.1021/acsenvironau.2c00032","DOIUrl":"10.1021/acsenvironau.2c00032","url":null,"abstract":"","PeriodicalId":29801,"journal":{"name":"ACS Environmental Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/44/0b/vg2c00032.PMC10114772.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9711681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Retrieval, Selection, and Evaluation of Chemical Property Data for Assessments of Chemical Emissions, Fate, Hazard, Exposure, and Risks 化学品排放、命运、危害、暴露和风险评估的化学性质数据的检索、选择和评估
ACS Environmental Au Pub Date : 2022-07-19 DOI: 10.1021/acsenvironau.2c00010
Li Li*, Zhizhen Zhang, Yujie Men, Sivani Baskaran, Alessandro Sangion, Shenghong Wang, Jon A. Arnot and Frank Wania, 
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引用次数: 9
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