Journal of hazardous materials advances最新文献

{"title":"The effect of iron complexes−nitrilotriacetate in the bio−oxidation of sulphide minerals: Toxic metal(loid)s release and surface microstructure","authors":"Ziwen Guo ,&nbsp;Jing Xiao ,&nbsp;Luhua Jiang ,&nbsp;Jiejie Yang ,&nbsp;Jinle Zhong ,&nbsp;Yulong Peng ,&nbsp;Manjun Miao ,&nbsp;Ningwen Liu ,&nbsp;Junzhao Wu ,&nbsp;Liang Hu ,&nbsp;Bo Miao ,&nbsp;Hongwei Liu ,&nbsp;Xueduan Liu","doi":"10.1016/j.hazadv.2024.100557","DOIUrl":"10.1016/j.hazadv.2024.100557","url":null,"abstract":"<div><div>Mineral exploitation and processing lead to the production of a large amount of stibnite−containing waste, which are the main sources of toxic metal(loid)s pollution in soil and water ecosystems. Bio−oxidation constitutes an essential driving force for pollution formation. However, the release of Sb in the association of stibnite and arsenopyrite in the presence of nitrilotriacetic acid (NTA) is still unclear. In this study, stibnite, stibnite−arsenopyrite and stibnite−arsenopyrite−NTA were designed to study the release characteristics of antimony (Sb). And the microstructure of elements in the reaction microinterface was analyzed by high−precision spectral characterization such as synchrotron radiation <em>X</em>−ray diffraction (SRXRD) and <em>X</em>−ray photoelectron spectroscopy (XPS). The results showed that the cell density of the microbial community in the three groups did not change much in the early stage, and began to rise and gradually stabilized in the middle and late stage of the reaction, indicating that the biological reaction basically stopped. Arsenopyrite promotes the release of antimony from stibnite, and the addition of NTA further enhanced the release of Sb and arsenic (As), increasing 17,292 and 43,130 mg/kg. However, the concentration of Fe decreased but progressively increased due to the NTA added. Meanwhile, the existence of NTA decreased leachate pH from 2.25 to 1.45 and increased Eh from 273 mV to 323 mV. The presence of NTA reduced the FeAsS in the microinterface of minerals to 30.6 %. Meanwhile, Fe₂(SO₄)₃ and FeAsO₄·2H₂O decreased to 3.8 % and 0.5 %, Sb₂O₅ and As(Ⅲ)−<em>O</em> increased to 22.4 % and 21.9 %. The abovementioned facts indicated that the complexation of NTA with Fe (Ⅲ) inhibits the formation of passivates such as jarosite and scorodite, thus promoting the bio−oxidation of arsenopyrite and stibnite. The new insight of stibnite bio−oxidation contributed to the understanding of sulfide oxidation mechanism and helped to put forward the control measures of pollution source in mining area.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100557"},"PeriodicalIF":5.4,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756884","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}

{"title":"Management and recovery of critical and strategic raw materials from E-Waste: A case study in Brazil with a focus on printed circuit boards","authors":"Maria Cristiane Neves de Carvalho ,&nbsp;Ana Paula Silva de Souza ,&nbsp;José Francisco de Oliveira Neto ,&nbsp;Maisa Mendonça Silva ,&nbsp;Lourdinha Florencio ,&nbsp;Simone Machado Santos","doi":"10.1016/j.hazadv.2024.100544","DOIUrl":"10.1016/j.hazadv.2024.100544","url":null,"abstract":"<div><div>Technological advances and new product development have increased demand for mineral raw materials, especially for clean technologies. Some materials are classified as 'critical' or 'strategic' due to supply risk and economic importance, with growing concerns about scarcity and supply reduction. Geopolitical and environmental aspects, particularly mining, are key factors affecting the price and supply of these materials. Recycling provides secondary raw materials and supports a circular economy, but its contribution remains small in this sector. Many critical and strategic minerals are found in waste electrical and electronic equipment (e-waste). However, countries like Brazil face obstacles in e-waste recycling, such as the need for reverse logistics, an illegal recycling market, data scarcity, and limited technology for complete recycling. The lack of primary data on e-waste production in Brazilian municipalities hampers effective waste management policies. This study evaluates the potential recovery of critical and strategic raw materials in waste printed circuit boards (WPCBs), contributing to e-waste estimates in Brazil. Using primary data from a medium-sized city, representative of most Brazilian cities, the research collected information on various everyday electronic products in Brazilian households. The results estimate that about 149.9 t WPCBs can be collected annually, with their materials processed and recovered. The recovered material would generate approximately USD 255,123.63 (BRL 1,260,361.68) in revenue, representing about 3.24 % of the annual municipal urban cleaning costs. Overall, the study demonstrates that material recovery from WPCBs can provide financial support for solid waste management, reinforcing the case for future investments in reverse logistics and recycling facilities.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100544"},"PeriodicalIF":5.4,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722495","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}

{"title":"Asbestos fiber levels from remediation work","authors":"Anders Brostrøm ,&nbsp;Henrik Harboe ,&nbsp;Ana Sofia Fonseca ,&nbsp;Marie Frederiksen ,&nbsp;Pete Kines ,&nbsp;William Bührmann ,&nbsp;Jakob Hjort Bønløkke ,&nbsp;Keld Alstrup Jensen","doi":"10.1016/j.hazadv.2024.100552","DOIUrl":"10.1016/j.hazadv.2024.100552","url":null,"abstract":"<div><div>Release of asbestos fibers during remediation and maintenance work remains a concern in many countries, as asbestos containing materials are often present in buildings predating their ban. Despite awareness of the adverse health effects from asbestos exposure, there is a lack of knowledge on concentrations resulting from typical asbestos remediation tasks, and on the minimum protection level needed. The aim of this study was to map asbestos exposure levels during removal of asbestos containing materials, in order to assess asbestos exposure levels and the adequacy of applied risk management measures, including choice of protective equipment. The investigated removal processes included asbestos containing facade panels, roof tiles, ceiling panels, tile adhesives, and insulation materials for pipes and boilers. All filter samples were analyzed by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. The highest asbestos concentration of 0.35 fibers/cm³ was found during removal of tiles with asbestos adhesives, though levels exceeding the current Danish occupational exposure limit of 0.003 f/cm³ were found in breathing zone samples at 11 of the 14 investigated sites. Even when considering 8 h time weighted average concentrations, levels were often found to exceed the occupational exposure limit, despite assuming a narrow exposure window, typically between 0.5 and 2 h due to high dust levels or short tasks. An additional objective was to provide guidance for decision-making in relation to two OEL options given in a recent EU Directive, where member states are also expected to transition from optical microscopy to electron microscopy for asbestos measurements.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100552"},"PeriodicalIF":5.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744813","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}

{"title":"The influence of freeze-thaw cycles on Se migration and soil microorganisms in northeast paddy soil","authors":"Ping Wang ,&nbsp;Jiaxing Yu ,&nbsp;Xiaohui Lu,&nbsp;Jinfeng Li,&nbsp;Long Sun,&nbsp;Ming Li","doi":"10.1016/j.hazadv.2024.100551","DOIUrl":"10.1016/j.hazadv.2024.100551","url":null,"abstract":"<div><div>Freeze-thaw cycles (FTCs) are a typical climatic feature in northeast of China. Due to global climate change, the frequency of freezing and thawing during the autumn and winter seasons is increasing, which may affect soil physicochemical properties and biological characteristics in freeze-thaw regions. In northeast of China, selenium (Se) is used to spray paddy fields to increase Se content in rice. However, the impact of FTCs on the environmental behavior of Se in paddy soils in northeast of China is not well understood, especially under the background of increasing frequency of FTCs. In this study, indoor simulated FTCs experiment was conducted to investigate the influence of FTCs frequency, soil water content, size of soil aggregate on the Se migration and soil microorganisms in paddy soil column. The results showed that FTCs increased the proportion of microaggregates and soil organic matter content while decreased soil pH. After 60 days, the Se concentration in microaggregates and macroaggregates at 6–10 cm depth increased from 0.148 mg/kg to 0.601 mg/kg and from 0.154 mg/kg to 0.630 mg/kg, respectively; the increment were more than those of the UNFT-Se treatment group (from 0.148 mg/kg to 0.309 mg/kg and from 0.159 mg/kg to 0.318 mg/kg). Se concentration in microaggregates and macroaggregates at 16–20 cm depths increased from 0.144 mg/kg to 0.367 mg/kg and from 0.152 mg/kg to 0.378 mg/kg, respectively; the increment were more than those of the UNFT-Se treatment group (from 0.144 mg/kg to 0.196 mg/kg and from 0.168 mg/kg to 0.207 mg/kg), indicating that FTCs promoted the downward migration of Se in the soil column. Correlation analysis indicated there was a positive correlation (<em>r</em> = 0.458, <em>p</em> &lt; 0.01) between Se concentration and organic matter as well as a negative correlation (<em>r</em> = −0.406, <em>p</em> &lt; 0.01) between Se concentration and soil pH, respectively. Additionally, high-throughput sequencing results showed that FTCs induced changes in the soil microbial community. These findings have important implications for geochemical studies of exogenous Se in soils of the seasonally freeze-thaw aeras.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100551"},"PeriodicalIF":5.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744811","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}

{"title":"Piezocatalysts as antimicrobial agents: A promising frontier in pathogenic bacteria control","authors":"Karzan Qurbani ,&nbsp;Omid Amiri ,&nbsp;Haider Hamzah","doi":"10.1016/j.hazadv.2024.100546","DOIUrl":"10.1016/j.hazadv.2024.100546","url":null,"abstract":"<div><div>The global escalation of antimicrobial resistance (AMR) poses a critical threat to public health, challenging the effectiveness of conventional antibiotic treatments. This review explores the novel potential of piezocatalysts as antimicrobial agents, offering an innovative approach to mitigating AMR. Piezocatalytic materials, capable of generating reactive oxygen species (ROS) under mechanical stress, present a promising method to counteract pathogenic bacteria. Mechanistic insights into the actions of piezocatalysts such as cell wall and membrane disruption, biofilm degradation, induction of bacterial stress responses, and interference with cellular functions are analyzed to highlight their targeted antimicrobial effects. Furthermore, the diverse applicability of piezocatalysts across medical, environmental, and water purification systems is explored, underscoring their relevance in contexts requiring sustained antimicrobial action. In addition to these roles, piezocatalysts hold potential in energy harvesting, sensing technologies, catalytic reactors, and biomedical engineering. Piezocatalysts thus emerge as promising contributors to advanced, antibiotic-free strategies, promoting sustainable antimicrobial practices within both academic research and industrial applications.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100546"},"PeriodicalIF":5.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759509","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}

{"title":"Nickel, cyanide, zinc, and copper removal from the effluent using photo-electrocoagulation-oxidation","authors":"Ahmad Shahedi ,&nbsp;Ahmad Jamshidi-Zanjani ,&nbsp;Ahmad Khodadadi Darban ,&nbsp;Mehdi Homaee ,&nbsp;Fariborz Taghipour","doi":"10.1016/j.hazadv.2024.100550","DOIUrl":"10.1016/j.hazadv.2024.100550","url":null,"abstract":"<div><div>One emerging approach for eliminating organic and inorganic pollutants from wastewater is electrocoagulation, often coupled with traditional methods to enhance efficacy. This study investigates the simultaneous elimination of nickel (Ni), cyanide (CN), zinc (Zn), and copper (Cu) from the natural wastewater of a gold processing plant using the photo-electrocoagulation method with ozone as an oxidizing agent (ECOUV), both in continuous and batch modes, produced in situ. When performing the test in batch mode, CN, Ni, Cu, and Zn were removed at their peak of 100, 79.1, 100, and 89 %, respectively, at pH=10 and at <em>i</em> = 15 mA/cm² using graphite-aluminum cathodes and stainless-steel anodes for 60 min without injecting oxidizing agent and solely based on in-situ ozone production. During the continuous mode test, the highest removal efficiencies achieved were 100 % for CN, 73 % for Ni, 100 % for Cu, and 78.8 % for Zn, all under identical operational parameters. These results confirm that ECOUV holds promise as a feasible approach for removing pollutants from the wastewater discharged by mineral processing facilities.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100550"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722494","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}

{"title":"Magnetic MXene chitosan-lignosulfonate composite (Fe3O4@ MCLS) for the reductive removal of Cr(VI) and other heavy metals from water","authors":"Haya Alyasi,&nbsp;Sara Wahib,&nbsp;Yongfeng Tong,&nbsp;Tricia Gomez,&nbsp;Khaled A. Mahmoud","doi":"10.1016/j.hazadv.2024.100536","DOIUrl":"10.1016/j.hazadv.2024.100536","url":null,"abstract":"<div><div>In this study, magnetic MXene (Ti3C2Tx) chitosan-lignosulfonate composite (Fe3O4@MCLS), was synthesized based on the facile integration of Fe3O4, chitosan-lignosulfonate (CLS) nanospheres and delaminated (DL) Ti3C2Tx. This composite was designed to integrate the biocompatibility of CLS and selective adsorption of MXene with the benefit of magnetic separation. Characterization confirmed the successful stabilization of the magnetic chitosan-lignosulfonate on the MXene surface, resulting in multiple surface functionalization groups and a high specific surface area. Fe3O4@MCLS was initially tested for the removal of Cr(VI) in a batch-system, achieving 90% efficiency and a capacity of 42.5 mg/g at neutral pH. Adsorption kinetics followed the Pseudo-second-order model, and equilibrium data fit the Langmuir isotherm, indicating a monolayer adsorption mechanism. The composite demonstrated high selectivity towards Cr(VI) ions and improved magnetic recovery from the media. The results suggested prevalent adsorption mechanisms included electrostatic interactions, complexation, surface intercalation, and reduction of toxic Cr(VI) to Cr(III) on the composite adsorbent. Further validation of the composite's performance was carried out through a competitive adsorption study in a multi-metal system. The results showed that the composite effectively removed heavy metals, exhibiting varying affinities for different metal ions, following the trend: Cr(VI) &gt; Ni(II) &gt; Cu(II) ≈ Co(II) under neutral pH conditions. Overall, the present study demonstrates the facile preparation of a new composite material, which exhibits sustainable characteristics due to the incorporation of chitosan-lignosulfonate and iron oxide. This eco-friendly and recyclable composite shows significant potential for application in water treatment.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100536"},"PeriodicalIF":5.4,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744804","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}

{"title":"Arsenic contamination in rice and drinking water: An insight on human cognitive function","authors":"Noraini Abu Bakar ,&nbsp;Wan Norhamidah Wan Ibrahim ,&nbsp;Siti Munirah Mohd Faudzi","doi":"10.1016/j.hazadv.2024.100543","DOIUrl":"10.1016/j.hazadv.2024.100543","url":null,"abstract":"<div><div>Arsenic, a prevalent environmental contaminant in drinking water and rice, poses significant health risks, especially in Southeast Asia. Emerging evidence suggests that even low-level arsenic exposure may contribute to neurodevelopmental disorders such as autism spectrum disorder (ASD). However, evidence linking low-level arsenic exposure in water and rice to neurobehavioral dysfunctions are often underestimated, neglecting the risks to children. This review aims to explores arsenic contamination in rice and drinking water across Southeast Asia, comparing it with Bangladesh, India, and China—three of the world's largest rice producers and consumers. It focuses on prenatal and postnatal exposure, exploring potential impacts on cognitive function related to ASD traits. Bangladesh, India, and Indonesia consistently report arsenic levels in rice above the 0.2 mg/kg safety threshold, while Malaysia, Vietnam, Myanmar, and Thailand generally remain below this limit. Seven studies reported noncarcinogenic risks (HQ &gt; 1), while nine studies found carcinogenic risks (CR &gt; 1 × 10⁻⁴) associated with rice consumption, highlighting potential health concerns in the Southeast Asian region. Additionally, six studies with unspecified risks. In Vietnam, Bangladesh, India, and Cambodia, arsenic contamination in groundwater has been associated with arsenicosis and elevated cancer risks. Although a positive correlation between low-level arsenic exposure (below 50 µg/L) and cognitive decline has been observed in the Asian countries, this link remains underexplored in Southeast Asia. Further research is needed to investigate arsenic exposure during critical developmental periods and its impact on neurobehavioral outcomes in vulnerable populations.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100543"},"PeriodicalIF":5.4,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756885","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}

{"title":"Immunological responses, oxidative stress, and histopathological effects of nanoplastics on commercially relevant mussel species: A review","authors":"Camila Barría ,&nbsp;Joan Carles Balasch ,&nbsp;Irene Brandts ,&nbsp;Doris Oliva ,&nbsp;José Luis Iriarte ,&nbsp;Mariana Teles","doi":"10.1016/j.hazadv.2024.100540","DOIUrl":"10.1016/j.hazadv.2024.100540","url":null,"abstract":"<div><div>Nanoplastics (NPs, &lt;1000 nm) are considered emerging contaminants with the ability to cross biological barriers and accumulate in tissues and organs of aquatic organisms. In the past decade, bivalves have been used to monitor the in vitro and in vivo effects of micro-nanoplastics exposure on normal homeostasis in immune cells, larval stages and adults. However, the study of the effects of NPs on mussels is still scarce and focuses on a few farmed species. Here we aim to comprehensively review the physiological and pathological effects associated with exposure to NPs on commercially important mussels, using an in-depth literature evaluation. Our analysis show that exposure to NPs adversely affect different mussel species, by altering relevant metabolism- and growth-related physiological rates (filtration, absorption, respiration and clearance rates). The accumulation of NPs elicit inflammatory responses, recruiting and altering <em>in vivo</em> the number of cellular subtypes of hemocytes that, <em>in vitro</em>, endure changes in lysosomal function, enhanced synthesis of nitric oxide synthase (NOs) and acid phosphatase (AcP), changes in the phagocytic activity, cell and mitochondrial membrane instability, cell viability and apoptosis. NPs exposure also elicits the synthesis of oxidative stress mediators, which may lead to DNA damage. During the developmental stages, the accumulation of NPs may induce histopathological alterations in the gills, gonads, and digestive tubes, producing malformations of the veliger larvae, developmental delays and decreased mineralization, among others effects. Here we also briefly highlight some of the shortcomings that should be taken into account to improve the analysis of the physiological disturbances of NPs exposure in mussels.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100540"},"PeriodicalIF":5.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744818","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}

{"title":"Risk assessment of dietary exposure due to Cyromazine and Melamine residues in poultry eggs from layer farms of Haryana, India","authors":"Deepak Soni,&nbsp;Khushbu,&nbsp;Pallavi Moudgil,&nbsp;Vijay J. Jadhav","doi":"10.1016/j.hazadv.2024.100534","DOIUrl":"10.1016/j.hazadv.2024.100534","url":null,"abstract":"<div><div>The practice of using Cyromazine (CYR) as feed additive larvicide at layer farms leads to occurrence of residues of CYR and its metabolite Melamine (MEL) in eggs and can cause public health problem. Therefore, the present research work was carried out to estimate the dietary exposure risk to consumers in Haryana, India where CYR is routinely used at layer farms as a measure of fly control. For this purpose, 110 egg samples were collected from layer farms located in selected districts of Haryana (Panchkula, Hisar, Ambala, Sirsa and Panipat). Samples were analyzed using High Pressure Liquid Chromatography (HPLC-UV). CYR concentration was found to be above LOQ in 25 samples. The mean concentration of the CYR was found to be 42.71 µg kg⁻¹ with a range of 16.88 -112.61 µg kg⁻¹. MEL was not detected in any of the sample analyzed. Estimates of dietary exposure of CYR was found to be 33.40 µg per kg body weight per day. The results indicated that poultry farmers are using CYR as feed additive in layer birds for the purpose of fly control by following good agricultural practices and there is no risk of dietary exposure of CYR and MEL through consumption of eggs to the consumers.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100534"},"PeriodicalIF":5.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722492","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}