Article
Chemistry, Analytical
Yuheng Lu, Wen Zeng, Jing Hu, Xiandeng Hou
Summary: In this study, Zr-based metal organic frameworks (UiO-66) were used for selective extraction of trace bismuth from water samples and digests of iron alloy. After simple centrifugation separation, the Bi(III)-adsorbed UiO-66 was analyzed by atomic fluorescence spectrometry (HG-AFS) through direct slurry sampling and in-situ hydride generation. The method demonstrated high selectivity for bismuth and resistance to interference from transition metals, enabling reliable determination of trace bismuth in high-purity iron alloy, seawater, and river water samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Spectroscopy
Barbora Stadlerova, Jiri Dedina, Stanislav Musil
Summary: The performance of two types of radiation sources for atomic fluorescence spectrometry, namely the electrodeless discharge lamp (EDL) and the boosted discharge hollow cathode lamp (Superlamp), were studied and compared using bismuth as a model analyte at specific fluorescence lines. Hydride generation was utilized for analyte introduction and an in-house assembled non-dispersive atomic fluorescence spectrometer was adjusted accordingly. Optimization of the radiation sources considered duty cycle, applied currents, and proper focusing. The EDL exhibited higher sensitivity, radiation intensity, and lower detection limits compared to the Superlamp.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Engineering, Electrical & Electronic
Chittatosh Pal, Subrata Majumder
Summary: This study demonstrates a label-free electrochemical sensor based on carboxylated MoS2 flakes functionalized with poly (Thymine), which can detect Hg2+ ions at extremely low concentrations in the aqueous medium. The sensor offers low detection limits, high selectivity, and good results in real samples.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Analytical
Michelle Buoso, Beatrice Campanella, Massimo Onor, Emanuela Pitzalis, Alessandro D'Ulivo
Summary: The use of BH intermediates as derivatization reagents significantly improves the tolerance to interference from transition metal ions in the generation of SbH3 and BiH3, and shows high tolerance in a wide range of acidity. The method has been successfully applied to the determination of Sb and Bi in complex samples, providing further understanding of the chemical behavior of borohydrides.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Lindomar A. Portugal, Edwin Palacio, Rejane Frizzarin, Joao H. Santos Neto, Victor Cerda, Sergio L. C. Ferreira
Summary: This work proposes an automated strategy for the speciation of inorganic selenium in infusion tea samples. The system utilizes an MSFIA-CVG-AFS system and sodium tetrahydroborate for chemical vapor generation. The method involves an online prereduction step to convert selenium (VI) to selenium (IV) before determining the total selenium concentration. The chemical parameters were optimized using a fractional factorial design. The method exhibited low detection and quantification limits, with a linear range and good precision. This method was successfully applied to analyze inorganic selenium speciation in commercially purchased tea samples.
Article
Chemistry, Analytical
Siyu Gu, Xudong Huang, Mingli Chen, Jixin Liu, Xuefei Mao, Xing Na, Guoying Chen, Yunbin Shao
Summary: A novel IDBD reactor coupled with ETV was established for arsenic determination, investigating the evolution mechanisms of arsenic species using XPS. DBDA atomizes arsenic nanoparticles while DBDT traps and releases arsenic oxides, enhancing sensitivity and precision in seafood sample analysis. The method shows potential for rapid arsenic analysis based on direct solid sampling ETV instrumentation.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Liangbo He, Yao Lin, Yubin Su, Yuanyuan Li, Yurong Deng, Chengbin Zheng
Summary: In this study, a lithium-ion battery powered compact handheld optical emission spectrometer (OES) was developed for sensitive field analysis of waterborne arsenic. By utilizing electro-chemical hydride generation (ECHG) and miniaturized ballpoint discharge (mu PD) as sample introduction means and excitation source, the system showed promising potential for the sensitive, cost-effective, and environmentally friendly analysis of waterborne arsenic.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Jaromir Vyhnanovsky, Dilek Yildiz, Barbora Stadlerova, Stanislav Musil
Summary: The study achieved photochemical vapor generation of bismuth with optimal conditions determined through investigating the influence of sensitizers and reaction medium flow rate. Combining PVG with atomic fluorescence spectrometry can provide low limits of detection at a low operation cost.
MICROCHEMICAL JOURNAL
(2021)
Article
Spectroscopy
Liu Pan, Du Mi-fang, Li Zhi-ya, Gao Ling-qing, Han Hua-yun, Zhang Xin-yao
Summary: This study proposes a fast, accurate, and environmentally friendly method for analyzing tellurium in steel using new ecological hydrogen reduction and hydride generation sampling technology. The method can separate and enrich trace tellurium from steel and determine it using atomic fluorescence method. The optimized working conditions and parameters enable the rapid and accurate determination of tellurium in steel, with high sensitivity and precision.
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2022)
Article
Chemistry, Analytical
Yujia Deng, Kai Li, Xiandeng Hou, Xiaoming Jiang
Summary: The developed method utilizes a miniaturized dielectric barrier discharge microplasma atomic emission spectrometer coupled with a tungsten coil (W-coil) for on-line hydride generation trapping-electrothermal vaporization, resulting in fast, low-cost, and sensitive determination of trace cadmium. By adopting a horizontally fixed W-coil and flow injection mode, the total sample throughput can be greatly improved.
Article
Chemistry, Analytical
Lanlan Li, Qirui Huang, Jing Xiao, Jiamin Feng, Shu Zhang, Hong Luo, Zhirong Zou, Xiaoli Xiong
Summary: In this study, Fe3O4 served as both an adsorbent and photocatalyst in the photochemical vapor generation-atomic fluorescence spectrometry (PVG-AFS) determination of Bi(III) after preconcentration. The effects of formic and acetic acid concentration, UV irradiation time, Fe3O4 concentration, and interferences from co-existing ions were investigated. Results showed that the AFS intensity was slightly enhanced by the mixed acid solution, but a significant enhancement was observed when Fe3O4 was used as a photocatalyst. Fe3O4 can decompose in the mixed acid solution, generating Fe3+ which acts as a sensitizer for improving Bi(III) efficiency. Under optimized conditions, the LOD of the proposed PVG-AFS system with or without preconcentration (5 mL sample) were 0.44 ng/mL and 0.07 ng/mL, respectively. The PVG-AFS system was successfully applied to the determination of water samples and demonstrated good accuracy and applicability with recoveries ranging from 94% to 104%.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Haiyan Yang, Kejun Li, Yanping Wang, Xin Yuan, Mei Zhang
Summary: A simple and label-free method was developed for hydrogen peroxide (H2O2) assay by chemical vapor generation-atomic fluorescence spectrometry. The method is based on the inhibition of the atomic fluorescence signal of As(III) by L-Cysteine (L-Cys) and the oxidation of L-Cys to cystine by H2O2 and I-. The proposed method has the advantages of simplicity and cost-effectiveness.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Yongchun Liu, Jie Zou, Bin Luo, Hairong Yu, Zhigang Zhao, Hui Xia
Summary: Using natural plant extracts as auxiliary matrix or photocatalysts can enhance the efficiency and sensitivity of photochemical vapor generation atomic fluorescence spectrometry for trace mercury determination, while reducing biological toxicity and secondary pollution. This green and sensitive method provides an experimental basis for expanding the photochemical vapor generation system.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Emanuela Pitzalis, Beatrice Campanella, Rachele Bonini, Massimo Onor, Alessandro D'Ulivo
Summary: The mechanisms controlling the generation of PbH4 in the reaction of Pb(II) with NaBH4 were investigated, with and without the presence of K3Fe(CN)6. PbH4 was identified for the first time using gas chromatographic mass spectrometry. It was found that without the additive, Pb(II) is converted to solid species and no volatile lead species can be detected. In the presence of K3Fe(CN)6, PbH4 is formed by the direct transfer of hydride from borane to lead atoms.
ANALYTICA CHIMICA ACTA
(2023)
Review
Chemistry, Analytical
Guanghui Niu, Alexander Knodel, Sebastian Burhenn, Sebastian Brandt, Joachim Franzke
Summary: The development of miniature, sensitive, high throughput, and in-situ analytical instruments using dielectric barrier discharge (DBD) has become a hot topic in modern analytical chemistry. DBD offers advantages such as easy operation, simple configuration, ambient working temperature and pressure, low power consumption, and miniature dimension. Its applications in analytical atomic spectrometry include serving as excitation or atomization sources in AES, AAS, and AFS, as well as functioning as a vapor generation system.
ANALYTICA CHIMICA ACTA
(2021)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)