ENVIRONMENTAL MONITORING AND ASSESSMENT
·
2020
·Vol. 192
·期 6
·1-9
·
IF 1.903
Li Xuguang,Elgarhy Abdelbaky Hossam,Hassan Mohamed Elfatih,Chen Yanbo,Liu Guanglong,ElKorashey Reham
Existing research on phosphorus removal from wastewater mostly focused on inorganic phosphorus while ignoring organic phosphorus, which has potential bioavailability. This study aims to provide an innovation for the development of advanced treatment material for both inorganic and organic phosphorus removal in water. In this study, ferrihydrite loaded on the graphene oxide (FeOOH-GO) composite adsorbent was synthesized by surface precipitation method, and its ability to remove both phosphate and diazinon as forms of inorganic and organic phosphorous from water was investigated. Characterization of the loaded composite using X-ray diffraction (XRD), scanning electron microscope (SEM), and Fourier transform-infrared spectroscopy (FTIR) indicated that FeOOH was successfully loaded onto graphene. The results of batch adsorption experiments showed that the adsorbent could remove both inorganic and organic phosphorus compounds simultaneously from water. When FeOOH content is 40%, the equilibrium adsorption amount of FeOOH-GO composite adsorbent for phosphate and diazinon was 5.81 and 23.20 mg g −1 , respectively. Environmental parameters such as pH and initial concentration have important influence on phosphorus removal by FeOOH-GO composite adsorbent and the removal efficiency of the inorganic and organic phosphorus from water decreases by increasing the initial concentration of phosphate and diazinon and the pH. It was concluded that the FeOOH-GO composite adsorbent has great potential to remove both inorganic and organic phosphate simultaneously from contaminated water.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
SOIL USE AND MANAGEMENT
·
2021
·Vol. 38
·期 1
·576-583
·
IF 2.95
Xiaoyan Yang,Yuhua Kong,Erhui Guo,Xiangwei Chen,·Limei Li
Phosphorus (P) is used to enhance agricultural productivity. Organic acids increase the release of inorganic phosphorus (P i ) into soil solutions and thereby improve phosphorus utilization in soils; however, the effects of both organic acids and the soil organic matter contents on P i release are poorly understood. To assess the importance of these factors in determining phosphorus availability, the release of soil P i fractions (i.e. aluminium-bound phosphorus (Al-P), iron-bound phosphorus (Fe-P), occluded phosphorus (O-P) and calcium-bound phosphorus (Ca-P)) was evaluated on addition of organic acids (citric, oxalic and malic acids) to soils from Mollisols region that had different organic matter contents and received phosphorus fertilizer. Biochemically produced humic acid was used to modify soil organic matter contents. Among P i fractions, the Fe-P fraction had the highest concentration in all the soils with different organic matter contents. In the presence of organic acids, the release of P i fractions decreased as the soil organic matter increased. Among the fractions, Al-P had the highest release, followed by Fe-P. Comparison among various organic acids revealed that oxalic acid was the most effective for P i release. Path analysis showed that Al-P release had larger direct-path and indirect-path coefficients, which implied that Al-P release had the largest contribution to total P i (TP i ) release. We concluded that the effectiveness of organic acids in improving soil phosphorus availability was most pronounced in soils with low organic matter contents, but further field-scale research is needed to confirm this. Al-P was the most effective source of inorganic phosphorus in Mollisols.
研究领域:
土壤学
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农业科学
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环境科学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Xinyu He,Zongqing Jin,Guanjun Xiao,Bo Zou,Qingqin Ge,Nannan Shi,Liwei Jiang,Cheng Sun,Tao Xiong,Yinan Zhang
To circumvent the toxicity problem of lead, looking out for lead-free perovskites with a broadband emission and associated LEDs that cover the full region of white light is the key to research in sustainable chemistry and material community. In order to improve the luminescence properties of inorganic lead-free perovskites, chemical doping engineering is utilized. We have found that yttrium plays an important role as a dopant in broadening the emission of inorganic perovskites. This work reports on white light emission in a yttrium-doped tin perovskite and the white LED synthesized with this eco-friendly phosphor. The hue of the light can be adjusted via the change in the excitation wavelength. DFT is performed to calculate the band gaps, and a good agreement with the experimental results is illustrated. The dramatic fluorescence enhancement (by a factor of about 4.5) is also revealed on the phosphor. Based on this sustainable material, a WLED is fabricated, and a full-color white light emission is realized with a CIE of (0.32, 0.33). This work not only provides us with an inorganic phosphor for white LEDs but also demonstrates the potential of the chemical doping strategy in sustainable chemistry and materials science.
研究领域:
材料科学
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化学工程
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Hong Wei,Dawei Pan,Yan Liang,Xia Fan,Guowei Gai
Considering the impact of the high salinity and high turbidity of coastal seawater on phosphorus forms, a new method was proposed to determine bioavailable inorganic phosphorus (BIP). The phosphorus most relevant to eutrophication is BIP, and traditional analysis methods may underestimate the degree of eutrophication. In this study, a microelectrode of multigold (AuμE) was fabricated for direct voltammetric determination of BIP without filtration, and BIP environmental characteristics including distribution and correlation relationships with environmental factors in typical coastal seawater of Northern China were analyzed. The proposed AuμE showed a low detection limit of 0.03 μM. The surface and bottom BIP concentrations ranged from 1.00 to 2.13 and from 0.88 to 2.05 μM, respectively. BIP dominated the total P (TP) accounting for 48.5–67.5 % in the surface layer samples, and 32.6–92.7 % in the bottom layer samples, respectively. The concentrations of BIP were obviously higher than those of DIP, indicating that DIP may underestimate the probability of eutrophication occurring. And BIP was positively correlated with dissolved oxygen (DO) ( P < 0.05). BIP may be a promising indicator of eutrophication potential in coastal areas with high salinity and high turbidity. The proposed reliable voltammetry method provides a new indicator for environmental assessment and represents a significant step in the comprehensive analysis of P species.
CAS / MDL:
研究领域:
海洋生物学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 11
·3507-3515
·
IF 4.478
Zhang Zhao,Tao Huihui,Cao Qiao,Li Lingfei,Xu Shihao,Li Yucheng,Liu Yingying
Fast, simple, and low-cost on-site visualized detection of inorganic phosphate (Pi) is in great demand since phosphate is the major reason of eutrophication. In this work, a ratiometric fluorescent probe composed by green carbon dots (GCDs) and red carbon dots (RCDs) has been established for high-sensitivity and selective sensing of Pi. A trend of color change from red to green is observed for the detection of Pi under ultraviolet light and the detection limit is 0.09 μM in the range of 0 to 55 μM. Fluorescent test paper prepared from the probe solution was successfully applied to semi-quantitative visual detection of Pi in real-world water and soil samples, which shows great real-world application potentials. Graphical abstract
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 18
·9623-9630
·
IF 3.269
Huan Feng,Yue Wang,Hongmin Jia,Run Zhang,Qian Han,Qingtao Meng,Zhiqiang Zhang
In this work, we have designed and synthesized a new 4-phenylthiazole-Cu2+ ensemble, L-Cu2+, as a fluorescence probe for the quantitative detection of inorganic phosphates (Pi) in aqueous and live cells. A fluorescent ligand, 2-((4-phenylthiazole-2-imino)methyl)-5-diethylaminophenol (L), was synthesized and its chemical structure was well characterized. L exhibited a high affinity (Ka = 3.27 × 105 M−1) and specificity for Cu2+ ions through a 1 : 1 stoichiometry to form a fluorescence sluggish L-Cu2+ ensemble. This L-Cu2+ ensemble was then employed as a turn-on fluorescence probe for the detection of Pi. Spectroscopic studies revealed that L-Cu2+ possesses excellent tolerance to other common interference anions, and in particular to AMP, ADP, ATP, PPi. The detection limit of L-Cu2+ to Pi was determined to be 0.2 μM. The desirable features of L-Cu2+, such as high specificity and sensitivity and low cytotoxicty, enable its application in the detection of Pi in biological samples. Fluorescence imaging of Pi in live MDA-MB-231 cells was conducted to demonstrate its capability in bioimaging applications. Quantitative analysis of Pi in single cells was then demonstrated using flow cytometry.
研究领域:
生物化学
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分析化学
·
细胞生物学
✓ 已验证
DOI
高影响因子
Environmental Chemistry
·
2024
·Vol. 20
·期 7
·292-301
·
IF 2
Xiao-Yan Cao,Min Liu,Ling Li,Gui-Peng Yang
Environmental context Organophosphorus (OP) is bioavailable to phytoplankton with photolysis can play an important role in the process. The photolysis behaviour of an OP (adenosine 5′-monophosphate, AMP) in seawater was investigated, and AMP can release inorganic phosphate under environmentally relevant light conditions, indicating OP photodegradation might be important in the phosphorus biogeochemical cycle. The results are helpful to further understand the bioavailability and cycle of OP in marine environment.Rationale Organic phosphorus (OP) is a potential source of bioavailable phosphorus for phytoplankton through photolysis and other degradation processes. Therefore, OP photodegradation plays an important role in phosphorus biogeochemical cycle.Methodology Taking adenosine 5′-monophosphate (AMP) as a model OP, we investigated the photolysis behaviour in seawater and discussed the mechanism. The photolysis dynamics were studied based on the inorganic phosphorus production at appropriate time intervals, which was analysed by spectrophotometric molybdenum blue method. The effects of medium, light and radicals were investigated.Results It was found that AMP can release inorganic phosphate under photosynthetically active radiation and ultraviolet (UV) with UVB being the most reactive band. The degradation of AMP in seawater was lower than that in deionised water under the same conditions, and the fresh seawater was more beneficial than aged seawater. The kinetics could be described by apseudo-first order equation. Fe3+ can promote the photolysis due to the generation of ·OH radicals, while within the range of this study, changes of Fe3+ content have no substantial effect on the promotion. The influence of ethanol and tetrahydrofuran as radical inhibitor showed evident inhabitation to the degradation, indicating that ·OH and 1O2 played an important role in the process, and ·OH seemed more important than 1O2.Discussion OP photodegradation is of importance in the phosphorus biogeochemical cycle. Varying properties of the medium and light can affect the OP transformation in seawater. The results are helpful to further understand the bioavailability and cycle of OP in the marine environment.
研究领域:
海洋生物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Xie Lina,Li Yuhu,Liu Yushuai,Hu Wenjing,Fang Shiqiang,Chen Xue-Qiang
Adhesives are widely used to join fragments in the preservation and restoration of cultural heritage made of pottery. However, research into the inorganic adhesive for archaeological pottery bonding is scarce and is even non-existent for the comparison study between organic and inorganic adhesives. Nowadays, a novel environmental-friendly inorganic phosphate-based adhesive has been developed. To evaluate the adhesive scientifically and objectively, three epoxy resin adhesives have also been prepared and applied to the fractured specimens, tested and compared in laboratory to check their compatibility and durability in this experimental study. The compatibility characterization results indicate that the bonding strength of inorganic phosphate-based adhesives is closest to that of the pottery matrix. From the perspective of contact angle change, permeability and morphology, the epoxy resins showed a dense structure after curing, which obstructs the breathing channel of the pottery matrix, and therefore the water vapor permeability and water absorption are greatly reduced. Additionally, the cured adhesive specimens also undergo three types of artificially accelerated aging: dry-thermal, hygrothermal and UV irradiation. These adhesives’ long-term stability and durability have been monitored and compared in terms of weight change, chromatic variation, bonding strength measurements, microscopic observations and FTIR analysis. After a dry-thermal aging, the inorganic phosphate-based adhesive shows the highest strength retention rate (81%), the lowest weight change rate (-9.106 × 10 − 5 %) and the lowest color variation (ΔE* = 5.46). The findings suggest that the inorganic phosphate-based adhesive may offer advantages over commonly used epoxy resins in terms of physical-chemical compatibility with the pottery substrate and long-lasting resistance to aging. The purpose of this study is to reveal the benefits of using inorganic phosphate-based adhesive to bond shattered pottery through a comparative experiment, hoping to provide useful bonding materials and innovative research ideas for archaeological pottery conservation. Graphical Abstract
研究领域:
文物保护
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xue Zhen Dong,Tai Yi Zhang,Yu Rong Guo,Nian Bing Li,Hong Qun Luo
Inorganic phosphate (Pi) not only sustains the physiological functions within organisms but also acts as an indicator of environmental water pollution. Thus, it is extremely significant to seek out a rapid and straightforward method for detecting Pi. In this paper, the lanthanide metal luminescent nanomaterial europium-pyromellitic acid (Eu-PMA, exhibiting characteristic fluorescence emission at 435 nm for PMA and 617 nm for Eu 3+ ) is synthesized via a simple solvothermal approach and utilized as a probe for ratiometric fluorescence detection of Pi. As the amount of Pi increases, Pi has a strong complexation ability with ligand PMA, resulting in the structural damage of Eu-PMA. PMA cannot sensitize Eu 3+ luminescence, thus the fluorescence intensity at 617 nm of the system is markedly decreased. Meanwhile, through energy transfer interaction, the fluorescence intensity at 435 nm of ligand PMA is weakly increased. Based on the ratio of the changes in fluorescence intensities of the two, a ratiometric fluorescence method is established for the detection of Pi. The method is not only rapid and simple, but also improves the sensitivity of Pi detection (Linear range is 0.1–90 μM). Moreover, the content of Pi in actual water samples has been analyzed and determined successfully by this method, which further broads the significance and application prospect of the ratiometric fluorescence method in detecting Pi.
研究领域:
分析化学
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环境科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 18
·4542
·
IF 3.1
Zhuo Dong,Lei Zhang,Ke Yang,Zhenggang Fang,Yaru Ni,Yang Li,Chunhua Lu
High-temperature adhesives find extensive application in diverse domains, encompassing repairs, production processes, and material joining. However, achieving their curing at ambient temperatures remains a formidable challenge due to the inherent requirement of elevated temperatures, typically exceeding 500 °C, for the curing reaction. To overcome this limitation, in this study, we developed a distinctive inorganic phosphate-based composite adhesive by incorporating dual-functional calcium monoaluminate (CA) into a traditional adhesive blend comprising Al(H2PO4)3and MgO. This distinctive approach significantly diminishes the curing temperature, enabling it to occur at room temperature. Firstly, CA’s facile hydration reaction effectively scavenges surrounding water molecules, thereby accelerating the dehydration curing process of Al(H2PO4)3. Secondly, as hydration is an exothermic process, it locally generates heat around the Al(H2PO4)3, fostering optimal conditions for its curing reaction. Moreover, the adhesive’s strength is substantially bolstered through the strategic inclusion of Nano-Al2O3(enhancing the availability of reaction sites) and Nano-SiO2(improving overall stability). As a demonstration, the adhesive formulation with added CA containing 2% Nano-Al2O3and 2% Nano-SiO2achieved a remarkable tensile strength of 32.48 MPa at room temperature, underscoring its potential as an efficient solution for various practical adhesive applications. The adhesive prepared in this study harnesses the hydration properties of CA to absorb moisture and release substantial heat, introducing a novel method for ambient temperature curing. This development promises to broaden its applications in refractory materials, coatings, and equipment repair.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS ES&T Water
·
2025
·
IF 4.3
Menghuan Zhang,Yuanyuan Lu,Qingwen Lan,Yunying Fang,Tingting Ma,Shuang He,Boyi Liu,Xinqiang Liang
Rapidly monitoring dissolved inorganic phosphate is important for risk prediction and early warning of eutrophication. In this work, a reagentless electrochemical paper-based analytical device (ePAD) was developed to construct an environmentally friendly electrochemical platform for sensitively quantifying trace-level inorganic phosphate in freshwater. By modifying a type of self-synthesized nanocomposite material (zirconium dioxide/zinc oxide/multiwalled carbon nanotubes, ZrO2–ZnO/MWCNTs), more abundant electroactive sites on the paper-based electrode surface were provided for the efficient adsorption of inorganic phosphate. The voltammetric signal response for aqueous phosphate anions was notably enhanced relative to that obtained at bare ePADs by relying on reductive cyclic voltammetry with molybdate(VI). After optimizing the main experimental parameters, a lower detection limit of 0.7 μM with good linear correlation in the range of 1.43–50 μM was realized at ZrO2–ZnO/MWCNTs/ePAD. Fast analysis time and good recovery percentages (105.64, 88.27, and 112.99%) were achieved in detecting inorganic phosphate from authentic freshwater samples (tap, runoff, and lake water). Owing to the ideal reproducibility and long storage stability of ZrO2–ZnO/MWCNTs/ePAD, this user-friendly and low-cost device is promising to be an in situ portable sensor to detect inorganic phosphate in aquatic ecosystems.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED GEOCHEMISTRY
·
2021
·
IF 3.524
Yong Liu,Jingfu Wang,Haiquan Yang,Shihao Jiang,Zuxue Jin,Jingan Chen
The oxygen isotope ratio in phosphate (δ 18 O P ) is an effective tool for tracing the sources of phosphorus (P) and their biogeochemical cycles . The HCl-extractable inorganic phosphate (HCl-P TI ) is the primary component of P and plays a key role in the dynamic transformation of P in sediment and soil. However, it has always been difficult to purity sample for analyzing the δ 18 O P composition of HCl-P TI due to the significantly interference of large amounts of Fe 2+/3+ , Ca 2+ , Cl − and other impurities in the HCl-P TI extracts. In this study, we developed a simple and promising purification method for δ 18 O P analysis of HCl-P TI in sediments and soils based on the superior selective enrichment and elution abilities of phosphate (PO 4 ) and efficient synchronous removal of impurities by Zr-Oxide gel in highly acidic HCl-P TI extract. The enrichment rate and elution rate of PO 4 in the HCl-P TI extract by the Zr-Oxide gel could achieve 100% respectively, and the synchronous removal rates of most anions, dissolved organic carbon (DOC), metals, and trace elements could be above 96% respectively, reducing the tedious operation of conventional methods and the difficulties in removal of impurities, such as Cl − in HCl-P TI extract. It's indicated that the purity of the Ag 3 PO 4 solid for δ 18 O P composition analysis of HCl-P TI could reach 99.9%. The above results show that the new method is very simple, efficient and reliable for the δ 18 O P analysis of HCl-P TI in sediments and soils. This study provides new methodological support for identifying the sources of P and tracing their biogeochemical cycles in sediment or soil environment.
研究领域:
环境科学
·
土壤学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）