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1. Real-world emission characteristics of carbonyl compounds from agricultural machines based on a portable emission measurement system

Author:
Wenhan Yu; Xianbao Shen; Bobo Wu; Lei Kong; Kaijie Xuan; Cheng Zhao; Xinyue Cao; Xuewei Hao; Xin Li; Hanyu Zhang; Zhiliang Yao
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 846-859
ISSN:
1001-0742
Subject:
high performance liquid chromatography,   etc   ; acetaldehyde; acrolein; emissions factor; formaldehyde; smog pollution; tillage; China;     Show all 8 Subjects
Abstract:
... Emissions of carbonyl compounds from agricultural machines cannot be ignored. Carbonyl compounds can cause the formation of ozone (O₃) and secondary organic aerosols, which can cause photochemical smog to form. In this study, 20 agricultural machines were tested using portable emission measurement system (PEMS) under real-world tillage processes. The exhaust gases were sampled using 2,4-dinitrophe ...
DOI:
10.1016/j.jes.2022.02.031

2. Photoresponsivity of asymmetrical dihydropyrene under circularly polarized light irradiation

Author:
Tsuyoshi Sawada; Shingo Kubo; Kazuaki Nanamura
Source:
Tetrahedron letters 2022 v.100 pp. 153880
ISSN:
0040-4039
Subject:
high performance liquid chromatography,   etc   ; anisotropy; irradiation; photoisomerization;     Show all 4 Subjects
Abstract:
... Asymmetric 2,7-di-tert-butyl-10b,10c-dimethyl-2′,3′-dimethyl-pyrazino[2,3-e]dihydropyrene (DMPZ-DHP) was prepared by the annulation of diamino dihydropyrene with 2,3-butanedione. Optical resolution was achieved using chiral high-performance liquid chromatography systems after the photoisomerization of DMPZ-DHP to DMPZ-metacyclophane-diene (MCPD), and its Kuhn’s anisotropy factor (g = Δε/ε) was det ...
DOI:
10.1016/j.tetlet.2022.153880

3. A novel method for determining relative response factors using high‐performance liquid chromatography with photodiode array detector and evaporative light scattering detection

Author:
Li Zhu; Yu Zhao; Changqin Hu; Mingzhe Xu; Lihui Yin
Source:
Phytochemical analysis 2022 v.33 no.1 pp. 5-11
ISSN:
0958-0344
Subject:
high performance liquid chromatography,   etc   ; pH; phytochemicals; reference standards;     Show all 4 Subjects
Abstract:
... OBJECTIVES: Because the purity of the two impurities reference standard (RS) of cefathiamidine is not easy to obtain, HPLC‐PDA‐ELSD were used to determin the RRFs of cefathiamidine impurities. METHODS: Peak area correction was applied to calculate RRFs to eliminate the influence of different responses caused by the difference in pH between the two mobile phases of HPLC‐PDA and HPLC‐PDA‐ELSD. The r ...
DOI:
10.1002/pca.3073

4. Chiral mesostructured hydroxide zinc carbonate for enantioseparation in high performance liquid chromatography

Author:
Lin Li; Zexi Liu; Lu Han; Shunai Che; Yingying Duan
Source:
Chemical communications 2022 v.58 no.25 pp. 4040-4043
ISSN:
1364-548X
Subject:
high performance liquid chromatography,   etc   ; silica gel; zinc carbonate;     Show all 3 Subjects
Abstract:
... Chiral mesostructured hydroxide zinc carbonate coated silica gel (CMHZC@S) was prepared by a hydrothermal route using amino acids as symmetry-breaking agents. CMHZC@S with three levels of hierarchical chiralities, as a chiral stationary phase (CSP), showed enantiomeric separation ability for high performance liquid chromatography (HPLC). ...
DOI:
10.1039/d1cc06813j

5. Practical Evaluation of Chitosan-Based Chiral Stationary Phase for Pharmaceutical Analysis by High-Performance Liquid Chromatography

Author:
Ya-Ya Gao; Shuang Liang; Wei Chen; Sheng Tang; Zheng-Wu Bai
Source:
Chromatographia 2022 v.85 no.3 pp. 247-254
ISSN:
0009-5893
Subject:
high performance liquid chromatography,   etc   ; chitosan; drugs; enantiomers; solvents;     Show all 5 Subjects
Abstract:
... In the recent years, the resolution of drug enantiomers has received widespread attention in the medical field. It is of great practical significance to develop an efficient chiral separation material for drug analysis. Based on the distinct advantages of both favorable separation performance and good solvent tolerance, chitosan bis(4-methylphenylcarbamate)-(isobutylurea) was chosen as a chiral se ...
DOI:
10.1007/s10337-022-04128-0

6. Development and validation of a LC-PDA method for methylphenidate analysis in sewage

Author:
Maiara C. S. Paixão; Jessica Nardi; Charise D. Bertol; Natália Freddo; Bruna F. Vieira; Vitoria A. Rosano; Maria T. Friedrich; Luciana G. Rossato-Grando
Source:
Journal of environmental science and health 2022 v.57 no.1 pp. 28-32
ISSN:
1532-4117
Subject:
high performance liquid chromatography,   etc   ; sewage; solid phase extraction; wastewater;     Show all 4 Subjects
Abstract:
... Methylphenidate (MPH) is an important emerging pollutant found in effluents and wastewater. Thus, we aimed to develop and validate a method for detection and quantitation of MPH residues in sewage through high performance liquid chromatography coupled with photodiode array detector (LC-PDA). Here we describe a selective, accurate, precise, and valid method for determination of MPH in sewage with a ...
DOI:
10.1080/10934529.2021.2020513

7. Photocatalytic, electrocatalytic and photoelectrocatalytic degradation of pharmaceuticals in aqueous media: Analytical methods, mechanisms, simulations, catalysts and reactors

Author:
Belisa A. Marinho; Luka Suhadolnik; Blaž Likozar; Matej Huš; Živa Marinko; Miran Čeh
Source:
Journal of cleaner production 2022 v.343 pp. 131061
ISSN:
0959-6526
Subject:
high performance liquid chromatography,   etc   ; drugs; photocatalysis; pollution; toxicity; wastewater;     Show all 6 Subjects
Abstract:
... Pharmaceuticals are used every day in most parts of the world and great proportions of these substances are excreted unaltered or as active sub-products, posing a threat of pollution. To protect the aquatic ecosystems, innovative solutions such as photocatalysis, electrocatalysis and photoelectrocatalysis are required. In this article we provide a comprehensive review of photo- and electrocatalyti ...
DOI:
10.1016/j.jclepro.2022.131061

8. Analysis of active compounds and geographical origin discrimination of Atractylodes macrocephala Koidz. by using high performance liquid chromatography-diode array detection fingerprints combined with chemometrics

Author:
Gao-Yan Tong; Hai-Long Wu; Tong Wang; Yue-Yue Chang; Yao Chen; Jian Yang; Hai-Yan Fu; Xiao-Long Yang; Xu-Fu Li; Ru-Qin Yu
Source:
Journal of chromatography 2022 v.1674 pp. 463121
ISSN:
0021-9673
Subject:
high performance liquid chromatography,   etc   ; Atractylodes macrocephala; algorithms; chemometrics; markets; provenance;     Show all 6 Subjects
Abstract:
... In this work, a simple and effective strategy for the determination of 12 active compounds of Atractylodes macrocephala Koidz. (AM) was proposed by using high performance liquid chromatography-diode array detection (HPLC-DAD) combined with alternating trilinear decomposition (ATLD) algorithm. Utilizing the "second-order advantage", three common problems in HPLC could be resolved, namely baseline d ...
DOI:
10.1016/j.chroma.2022.463121

9. Contrasting patterns of venom regeneration in a centipede (Scolopendra viridis) and a scorpion (Centruroides hentzi)

Author:
Gunnar S. Nystrom; Lucy G. Fry; Schyler A. Ellsworth; Darin R. Rokyta
Source:
Toxicon 2022 v.210 pp. 132-140
ISSN:
0041-0101
Subject:
reversed-phase high performance liquid chromatography,   etc   ; Centruroides; Scolopendra; drugs; ecology; venoms;     Show all 6 Subjects
Abstract:
... As biochemical traits with clear fitness consequences, venoms serve a critical ecological role for the animals that produce them. Understanding how venoms are maintained and regenerated after use will, therefore, provide valuable insight into the ecology of venomous animals. Furthermore, most studies on venomous organisms often require removing animals from the wild and waiting extended periods of ...
DOI:
10.1016/j.toxicon.2022.02.022

10. Detection of multiple endocrine‐disrupting chemicals in milk: Improved and safe high performance liquid chromatography tandem mass spectrometry method

Author:
Yunhan Yu; Mengya Kuang; Baohua Zheng; Meiling Wang; Zhenqiang Liu; Huilan Xu; Jianwu Wang
Source:
Journal of separation science 2022 v.45 no.9 pp. 1538-1549
ISSN:
1615-9306
Subject:
high performance liquid chromatography,   etc   ; cost effectiveness; milk; separation; tandem mass spectrometry;     Show all 5 Subjects
Abstract:
... Herein, an improved method for detecting the endocrine‐disrupting chemicals in milk is presented, which is based on high performance liquid chromatography tandem mass spectrometry, coupled with a quick, effective, and safe method. The linearity of the proposed method was in the range of 0.05–100 μg/L, and all correlation coefficients were ≥0.9973. At three concentration levels, the spiked recoveri ...
DOI:
10.1002/jssc.202100844

11. Formation of the Composition of Polycyclic Aromatic Hydrocarbons in Hummocky Bogs in the Forest-Tundra–Northern Tundra Zonal Sequence

Author:
E. V. Yakovleva; D. N. Gabov; R. S. Vasilevich
Source:
Eurasian soil science 2022 v.55 no.3 pp. 313-329
ISSN:
1064-2293
Subject:
high performance liquid chromatography,   etc   ; ecotones; lignin; naphthalene; peat; peatlands; permafrost; tundra;     Show all 8 Subjects
Abstract:
... The accumulation of polycyclic aromatic hydrocarbons (PAHs) in plants and peat of three natural subzones—forest-tundra, southern tundra, and northern tundra—is discussed. The content of polyarenes is estimated with high performance liquid chromatography. The absence of statistically significant differences in the PAH accumulation by the plants of the same species in the studied ecotones allows for ...
DOI:
10.1134/S1064229322030140

12. Optimizing Shoot Formation in Gentiana kurroo Royle for Gentiopicroside Production

Author:
Mariadoss Alphonse; Rajasekaran Chandrasekaran; Siva Ramamoorthy; Devanand P. Fulzele; Ravindra Raina; Kalaivani Thiagarajan
Source:
Journal of plant growth regulation 2022 v.41 no.3 pp. 983-992
ISSN:
0721-7595
Subject:
high performance liquid chromatography,   etc   ; Gentiana; callus; habitats; liquids; plant growth; India;     Show all 7 Subjects
Abstract:
... The roots and shoots of Gentiana kurroo Royle are rich sources of gentiopicroside (GPD). The plant is used traditionally for curing many metabolic diseases. The exploitation of G. kurroo in its native habitat has placed the plant on the critically endangered list of plants in India. One of the ways of creating an alternative source of G. kurroo is through in vitro propagation. Although a number of ...
DOI:
10.1007/s00344-021-10352-z

13. Preparation of dioscin from Trigonella foenum-graecum by foam separation–preparative high-performance liquid chromatography

Author:
Zhijuan Wang; Wei Zhang; Wenmei Gan; Shicheng Nie; Hong Gao; Lin Song
Source:
European food research & technology 2022 v.248 no.2 pp. 477-483
ISSN:
1438-2377
Subject:
high performance liquid chromatography,   etc   ; Trigonella foenum-graecum; foams; food research; technology;     Show all 5 Subjects
Abstract:
... Dioscin in Trigonella foenum-graecum was purified by foam separation combined with preparative high-performance liquid chromatography (Prep-HPLC) and the preparation method of dioscin monomer was established. Then, the structure was confirmed by FI-IR, HRMS, ¹³C-NMR and ¹H-NMR.The results showed that the method had the advantages of simple operation, short separation period and high efficiency and ...
DOI:
10.1007/s00217-021-03893-w

14. Binding Sites of a Positron Emission Tomography Imaging Agent in Alzheimer’s β-Amyloid Fibrils Studied Using ¹⁹F Solid-State NMR

Author:
Pu Duan; Kelly J. Chen; Gayani Wijegunawardena; Aurelio J. Dregni; Harrison K. Wang; Haifan Wu; Mei Hong
Source:
Journal of the American Chemical Society 2022 v.144 no.3 pp. 1416-1430
ISSN:
1520-5126
Subject:
high performance liquid chromatography,   etc   ; amyloid; fluorine; ligands; peptides; positron-emission tomography; stoichiometry;     Show all 7 Subjects
Abstract:
... Amyloid imaging by positron emission tomography (PET) is an important method for diagnosing neurodegenerative disorders such as Alzheimer’s disease. Many ¹¹C- and ¹⁸F-labeled PET tracers show varying binding capacities, specificities, and affinities for their target proteins. The structural basis of these variations is poorly understood. Here we employ ¹⁹F and ¹³C solid-state NMR to investigate th ...
DOI:
10.1021/jacs.1c12056

15. Diversity of phosphate solubilizing bacteria and fungi from andisol soil affected by the eruption of Mount Sinabung, North Sumatra, Indonesia

Author:
MARIANI SEMBIRING; T. SABRINA
Source:
Biodiversitas 2022 v.23 no.2 pp. -
ISSN:
2085-4722
Subject:
high performance liquid chromatography,   etc   ; Talaromyces pinophilus; liquids; phosphates; soil pH; solubilization; Indonesia;     Show all 7 Subjects
Abstract:
... Sembiring M, Sabrina T. 2021. Diversity of phosphate solubilizing bacteria and fungi from andisol soil affected by the eruption of Mount Sinabung, North Sumatra, Indonesia. Biodiversitas 23: 713-719. Phosphate solubilizing microbes are present in all locations with different population levels. The eruption of Mount Sinabung in 2013 resulted in changes in soil pH and the soil’s microbial population ...
DOI:
10.13057/biodiv/d230216

16. High-performance liquid chromatography for the sensitive zearalenone determination by the automated immunomagnetic beads purifier for one-step sample pre-treatment

Author:
Bo Zhang; Wenting Liu; Zhenjiang Liu; Xiaoling Fu; Daolin Du
Source:
European food research & technology 2022 v.248 no.1 pp. 109-117
ISSN:
1438-2377
Subject:
high performance liquid chromatography,   etc   ; automation; feeds; food research; monoclonal antibodies; technology; zearalenone;     Show all 7 Subjects
Abstract:
... In this study, a sensitive high-performance liquid chromatography method for zearalenone determination in feeds and grains was established based on the automatic immunomagnetic bead purifier analyzer (KY-AMI-I) for the one-step sample pre-treatment. Various parameters that may affect the analytical performance were investigated. Immunomagnetic bead separation system based on a monoclonal antibody ...
DOI:
10.1007/s00217-021-03862-3

17. Preparation of chiral stationary phase based on a [3+3] chiral polyimine macrocycle by thiol-ene click chemistry for enantioseparation in normal-phase and reversed-phase high performance liquid chromatography

Author:
You-Ping Zhang; Ling-Xiao Xiong; Ying Wang; Kuan Li; Bang-Jin Wang; Sheng-Ming Xie; Jun-Hui Zhang; Li-Ming Yuan
Source:
Journal of chromatography 2022 v.1676 pp. 463253
ISSN:
0021-9673
Subject:
reversed-phase high performance liquid chromatography,   etc   ; epoxides; methanol; silica gel; standard deviation;     Show all 5 Subjects
Abstract:
... Polyimine macrocycles are a new class of organic macrocycles with cyclic structures, well-defined molecular cavities, and multiple cooperative binding sites, which have recently aroused considerable research interest in molecular recognition and separation. Herein, we report the bonding of a [3+3] chiral polyimine macrocycle (H₃L, C₇₈H₇₈N₆O₃) on thiol-functionalized silica gel using thiol-ene clic ...
DOI:
10.1016/j.chroma.2022.463253

18. Acrylamide content in starch based commercial foods by using high performance liquid chromatography and its association with browning index

Author:
Vandana Verma; Neelam Yadav
Source:
Current research in food science 2022 v.5 pp. 464-470
ISSN:
2665-9271
Subject:
high performance liquid chromatography,   etc   ; acrylamides; diet; food science; humans; markets; research; starch; India;     Show all 9 Subjects
Abstract:
... The harmful effects of acrylamide (AA) are a major health concern for human beings. To find out the levels of AA content in commercial food products, 43 samples representing 3 important product categories (French fries, bakery biscuits, and branded biscuits) were procured from the local market in Allahabad, India. An assay of AA was done using HPLC-DAD. The LOD and LOQ for AA were 3.733 and 11.045 ...
DOI:
10.1016/j.crfs.2022.01.010

19. Are Highly Stable Covalent Organic Frameworks the Key to Universal Chiral Stationary Phases for Liquid and Gas Chromatographic Separations?

Author:
Chen Yuan; Wenyan Jia; Ziyun Yu; Yanan Li; Min Zi; Li-Ming Yuan; Yong Cui
Source:
Journal of the American Chemical Society 2022 v.144 no.2 pp. 891-900
ISSN:
1520-5126
Subject:
reversed-phase high performance liquid chromatography,   etc   ; amides; durability; enantioselectivity; gas chromatography; lactones; liquids;     Show all 7 Subjects
Abstract:
... High-performance liquid chromatography (HPLC) and gas chromatography (GC) over chiral stationary phases (CSPs) represent the most popular and highly applicable technology in the field of chiral separation, but there are currently no CSPs that can be used for both liquid and gas chromatography simultaneously. We demonstrate here that two olefin-linked covalent organic frameworks (COFs) featuring ch ...
DOI:
10.1021/jacs.1c11051

20. Comprehensive investigation of psicose in Chinese honeys and the assessment of its potential as a new marker for honey adulteration detection

Author:
Qian Xie; Xuezhe Huang; Xinxin Ji; Guangqun Jia; Yaxin Sang; Zongyan Cui; Jinjie Zhang
Source:
Journal of food composition and analysis 2022 v.108 pp. 104444
ISSN:
0889-1575
Subject:
high performance liquid chromatography,   etc   ; Ziziphus; adulterated products; food composition; honey; psicose; syrups; China;     Show all 8 Subjects
Abstract:
... The content of psicose in 454 honey samples and 58 syrup samples collected from China was determined by a high-performance liquid chromatography coupled to evaporative light scattering detection (HPLC-ELSD) method. Psicose was not detected in any honey samples except for some Jujube honeys, and psicose was detected in 23 of 53 of Jujube honeys, with an average content of 0.21 g/100 g. The detectio ...
DOI:
10.1016/j.jfca.2022.104444