ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2025
·
IF 0
Liu Pengxiao,Gao Shuai,Li Ying,Hou Bin,Liu Ning,Du Zhen,Lu Jing
This study investigated the aging and pollution behavior of acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) microplastics (MPs) exposed to residual chlorine in tap water distribution systems. The ABS and PC MPs in the aging processes were analyzed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Results revealed that 0.4 mg/L residual chlorine could induce morphological changes, increase surface oxygen-containing functional groups, and enhance the hydrophilicity of MPs at the CT value of 9216 mg·min/L. Additionally, both ABS and PC MPs released dissolved organic matter (DOM) into water, with higher DOM concentrations observed in the presence of residual chlorine. Besides, this interaction also led to the formation of trichloromethane (TCM). And the TCM production increased with higher MPs concentrations, smaller particle size, and longer chlorine exposure time.
研究领域:
环境科学
·
污染生态学
✓ 已验证
产品关联
DOI
PubMed
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Xiao Wang,Yanmei Zhou,Chenggong Xu,Haohan Song,Li Li,Junli Zhang,Meixia Guo
A turn-on fluorescent probe ( DAME ) for sensing hypochlorous acid (HClO) with excellent selectivity was presented. The fluorescent probe was composed of coumarin derivative as the fluorophore and dimethylcarbamothioic chloride group with a sulfide moiety as modulator. Additionally, the sulfide moiety would be oxidized by HClO, and then free dye of coumarin derivate was released and exhibited significant fluorescence. In addition, the probe could respond to HClO in solutions within 60 s and the limit of detection was down to 34.75 nM. Moreover, the probe was used for the detection of HClO in tap water through the home-made test paper. And confocal images confirmed that probe DAME could be used for recognizing HClO in living cells.
研究领域:
分析化学
·
生物成像
·
环境监测
·
传感器开发
✓ 已验证
DOI
高影响因子
Heliyon
·
2023
·
IF 4
Liangliang Tian,Xin Qu,Dongmei Huang,Yongfu Shi,Cong Kong,Yuan Wang
This research aimed to develop an effective method for detecting semivolatile earthy-musty odors without using the conventional sample processing equipment used for volatile compounds. The concurrent isolation of 2-methylisoborneol (2-MIB), trans -1,10-dimethyl-trans-9-decalol (geosmin, GSM), 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP) in tap water was successfully achieved by employing a combination of n-hexane liquid‒liquid extraction (LLE) and silica solid-phase extraction (SPE) techniques. Gas chromatography–mass spectrometry (GC-MS) was utilized for the identification of these targets, with the inclusion of borneol (BN) as an internal reference. This robust method was optimized and validated. It was found that the method showed good linearity in the range of 0.5–100 ng/mL and produced good recoveries (84.6 %–103 %) with satisfactory relative standard deviations (1.50 %–10.1 %). The determined limits of detection (LODs) for the group of four substances were found to vary from 0.3 to 0.9 ng/L, whereas the limits of quantitation (LOQs) exhibited variations between 1 and 3 ng/L. The subsequent implementation of this methodology to evaluate the four previously described off-flavor chemicals in tap water resulted in satisfactory results.
研究领域:
分析化学
·
环境科学
·
水质检测
✓ 已验证
DOI
PubMed
高影响因子
WATER RESEARCH
·
2026
·
IF 12.8
Bin Chen,Weihu Zhang,Yunyun Guo,Yuan Bai,Lele Cui,Wenheng Jing
Electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) presents a sustainable paradigm for decentralized chemical manufacturing, yet its practical implementation is severely impeded by catastrophic scaling in tap water electrolytes. Here, we reveal that on conventional gas diffusion electrodes, localized alkalinity-induced scaling precipitates a fatal hydrophilic transition, triggering irreversible water flooding and failure. To circumvent this, we introduce a structurally discontinuous electrode architecture engineered with artificial micro-cracks, which demonstrates exceptional stability for over 800 h at 100 mA cm −2 in tap-water-based electrolytes while maintaining a Faradaic efficiency >80 %. Operando electrochemical reflection-absorption imaging elucidates a unique tolerance mechanism wherein the crack channels retain their hydrophobicity and gas permeability to support sustained reaction despite the severe deactivation of catalyst islands by scaling. Leveraging this design, we engineer a scaled-up, membrane-free electrolyzer that, operating directly with tap water at 100 mA cm −2 , achieves high-throughput H 2 O 2 production (600 mL min −1 ) for >200 h. This work resolves the critical hardness tolerance bottleneck, establishing a robust foundation for the deployment of on-site H 2 O 2 electrosynthesis in diverse real-world water matrices.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Chenchen Wang,Panpan Huang,Chunsheng Qiu,Jing Li,Shuailong Hu,Liping Sun,Yaohui Bai,Fu Gao,Chaocan Li,Nannan Liu,Dong Wang,Shaopo Wang
This study was to investigate the occurrence, migration and health risk of phthalic acid esters (PAEs) in tap water , barreled water and bottled water in Tianjin, China. Six priority controlled PAEs were measured, among which the detection frequency of butyl benzyl phthalate (BBP), dibutyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP) was 100%, while the others were not detected. The concentration of DEHP was higher than BBP and DBP in all the samples. The initial ∑ 3 PAEs concentrations in tap water, barreled water and bottled water were 2.409 ± 0.391 μg/L, 1.495 ± 0.213 μg/L and 1.963 ± 0.160 μg/L, respectively. Boiling tap water could reduce the PAEs content to an extent, but they increased significantly in hot tap water contacting with disposable plastic cups. The migration of PAEs in barreled water and bottled water were positively correlated with storage time and temperature, which could be described by exponential models. The hazard indexes of PAEs in different types of drinking water were very low. However, the human carcinogenic risks of DEHP will reach the maximum acceptable risk level of 10 −6 when bottled water is stored for 8.8 days at 40 °C, 7.7 days at 50 °C, or 6.1 days at 60 °C.
研究领域:
环境科学
·
公共卫生
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2017
·Vol. 60
·期 4
·304-314
·
IF 3.956
Zhu Kunlei,Sun Yinghui,Wang Rongming,Shan Zhongqiang,Liu Kai
High-tap density electrode materials are greatly desired for Li-ion batteries with high volumetric capacities to fulfill the growing demands of electric vehicles and portable smart devices. TiO 2 , which is one of the most attractive anode materials, is limited in their application for Li-ion batteries because of its low tap density (usually <1 g cm −3 ) and volumetric capacity. Herein, we report uniform mesoporous TiO 2 submicrospheres with a tap density as high as 1.62 g cm −3 as a promising anode material. Even with a high mass loading of 24 mg cm −2 , the TiO 2 submicrospheres have impressive volumetric capacities that are more than double those of their counterparts. Moreover, they can be synthesized with ~100% yield and within a reaction time of ~6 h by optimizing the experimental conditions and formation mechanism, exhibiting potential for large-scale production for industrial applications. Other mesoporous anode materials, i.e., high-tap density mesoporous Li 4 Ti 5 O 12 submicrospheres, are fabricated using the generalizedmethod. We believe that our work provides a significant reference for the industrial production of mesoporous materials for Li-ion batteries with a high volumetric performance.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机合成
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Zi-Hang Zhang,Xiao-Bo Zhang,Pu Wang,Su-Hang Xu,Zuo-Qin Liang,Chang-Qing Ye,Xiao-Mei Wang
Iron ion (Fe 3+ ) detection is crucial for human health since it plays a crucial role in many physiological activities. In this work, a novel Schiff-base functionalized cyanine derivative (CyPy) was synthesized, which was successfully assembled on the surface of upconversion nanoparticles (UCNPs) through an amphiphilic polymer encapsulation method. In the as-designed nanoprobe, CyPy, a recognizer of Fe 3+ , is served as energy donor and β-NaYF 4 :Yb,Er upconversion nanoparticles are adopted as energy acceptor. As a result, a 93-fold enhancement of upconversion luminescence is achieved. The efficient energy transfer from CyPy to β-NaYF 4 :Yb,Er endows the nanoprobe a high sensitivity for Fe 3+ in water with a low detection limit of 0.21 μM. Moreover, the nanoprobe has been successfully applied for Fe 3+ determination in human serum and tap water samples with recovery ranges of 95 %-105 % and 97 %-106 %, respectively. Moreover, their relative standard deviations are all below 3.72 %. This work provides a sensitive and efficient methodology for Fe 3+ detection in clinical and environmental testing.
研究领域:
分析化学
·
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 8
·1-8
·
IF 6.232
Yan Fei,Ma Xinyu,Jin Qifan,Tong Yun,Tang Hongliang,Lin Xingyu,Liu Jiyang
The selective electrochemical determination of fluoride is reported by phenylboronic acid-functionalized vertically ordered mesoporous silica film attached to the indium tin oxide electrode, designed as PBA-VMSF/ITO. Fluoride ion can selectively bind to phenylboronic acid to generate boronate anions, leading to negative charges inside the ultrasmall nanochannel of VMSF and ultimately rejecting the access of potassium ferricyanide ions to the electrode surface. By recording the reduced electrochemical signal of potassium ferricyanide, determination of fluoride ion in aqueous solution was achieved with a fast response, wide response range, and high selectivity. Furthermore, with the specific recognition of PBA and anti-fouling ability of VMSF, the PBA-VMSF/ITO sensor has been successfully used to detect fluoride ion in tap water.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 107
·105795-105800
·
IF 3.289
Lanfang Pang,Yanmei Zhou,Wenli Gao,Haohan Song,Xiao Wang,Yong Wang
The 7-hydroxy-4-methylcoumarin as an “off–on” fluorescent probe exhibited excellent selectivity and sensitivity towards hypochlorite over other reactive oxygen species and relevant ions. Upon treatment with hypochlorite, the fluorescence intensity of the probe gradually increased 86-fold. A good linear increase of the fluorescence intensity could be observed with increasing hypochlorite concentration over a wide linear range of 0–150 μM, and a detection limit as low as 67 nM was obtained. Moreover, the probe could also be successfully applied for the detection of hypochlorite in tap water and living cells, which provided great potential for the quantitative detection of hypochlorite in water samples and cancer cells.
研究领域:
分析化学
·
生物化学
·
医学检测
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xiao-Fei Yu,Wen-Cui Li,Bin He,Lei Shi,Fan Tang,Dong Yan,Dongqi Wang,An-Hui Lu
The severe shuttle effect and sluggish redox kinetics are the current bottlenecks of lithium-sulfur (Li-S) batteries, resulting in capacity fading and inferior rate performance, especially under the condition of high sulfur loading and low electrolyte/sulfur ratio (E/S). Herein, conductive carbon nanoparticles (Ketjen Black, KB) covered by borocarbonitride (BCN) are assembled into micro-sized particles to form a polar KB@BCN hybrid, which is employed as a sulfur host with enhanced tap density via a facile intergrowth method. At a molecular level, BCN, endowed with abundant adsorption sites as the adsorbent and catalyst, can adsorb polysulfides and catalyze the conversion of polysulfides. On the nanometer scale, the BCN is loaded on the highly conductive KB nanoparticles, which can improve the conductivity of the hybrid (1786 S m −1 ), thereby improving the conversion of polysulfides. On the micrometer scale, the BCN and the KB nanoparticles together form micro-sized particles to improve the tap density, which is beneficial to build thick electrodes and reduce the amount of electrolyte. When applied as a sulfur cathode, KB@BCN-2 shows good cycling capability (a low-capacity decay of 0.05% after 800 cycles at 0.5C) and high rate performance (765 mA h g −1 at 3.0C). Even under a lean electrolyte condition (E/S = 5 μL mg −1 ), the KB@BCN-2-S has a high initial capacity of 1266 mA h g −1 at 0.1C. Significantly, incorporating polar electrocatalysts with carbon matrix to form a high-density sulfur host through secondary granulation can provide a new insight for achieving high-performance Li-S batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2023
·
IF 7.8
Yue Zong,Song Su,Ruijun Zhang,Yan Sun,Jiayu Tian,Bart Van der Bruggen
How to simultaneously improve the water permeance and antibiotics/minerals selectivity is one of the key issues for promoting the efficiency of drinking water treatment with nanofiltration (NF) technology . In this study, the post-treatment with a ternary complex of ethanol-water-NaOH (denoted as EWN) was used on four commercial NF membranes (NF270, NF90, HS-200C, and DF100) to understand its modification mechanism and promote the tetracycline removal efficiency. It was confirmed that the polyamide layers of all four commercial NF membranes were thinner after EWN post-treatment along with a slight increase in the pore size and enhancement in hydrophilicity and electronegativity . As a result, the water permeation of NF270 was improved by 70% and that of the other three membranes was increased by 19–20% while keeping a high tetracycline rejection of over 99%. Simultaneously, mineral ions such as K + , Ca 2+ , Mg 2+ , and Cl - passed the post-treated commercial NF membranes more easily. This yields a facile strategy for the performance regulation of existing, or commercial NF membranes.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Qiankun Qiu,Yi Wu,Xiaohui Yan,Yanshuo Li,Jiulong Li,Yuanbo Chen,Dapeng Wu
ABSTRACT In this work, porous electrospun microfibers (PEMFs) were prepared using a polyimide/polyvinylpyrrolidone/polyethylene glycol (PI/PVP/PEG) solution mixture with coaxial ultrasonic water vapor spraying. After removing PVP and PEG by ultrasonic water washing, the PEMFs were successfully demonstrated as adsorbents for solid phase extraction (SPE). Most non-porous electrospun nanofibers are hundreds of nanometers in diameter, with a specific surface area of dozens of square meters per gram. In contrast, the diameter of the as-prepared PEMFs was tuned between 3 and 8 μm, the specific surface area was 76 m 2 g − 1 and the pore size was ca 25 nm. Therefore, the flow resistance of the PEMF-SPE cartridges was similar to those of conventional commercial SPE cartridges, and much lower than those of SPE cartridges packed with electrospun nanofibers. Using the PEMF-SPE cartridges with ultra-performance liquid chromatography-fluorescence detector (UPLC-FLD), five fluoroquinolones (FQs) in tap water, egg and milk samples were extracted and quantified successfully. After optimizing the extraction conditions, FQs in water samples were extracted and eluted with high recoveries of 84.8–114.8%. The inter-batch and intra-batch relative standard deviation (RSD) values for the FQs were in the range of 1.9–9.5% ( n =3), and the limits of detection were between 0.0024–0.014 μg L − 1 . The method was linear in the concentration range of 0.005–10 μg L − 1 . The reliability of the developed method was validated by analyzing tap water, egg and milk samples, and the recovery values were found to be in the range of 74.8–116.6% under the optimized conditions.
研究领域:
分析化学
·
环境科学
·
材料科学
·
食品科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）