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You searched for: Publication Year 2016 Remove constraint Publication Year: 2016 Source 2016 v.8 no.10 Remove constraint Source: 2016 v.8 no.10
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341. Exploring the chemical mechanism of thermal processing of herbal materials by temperature-resolved infrared spectroscopy and two-dimensional correlation analysis

Author:
Chen, Jian-bo; Zhou, Qun; Sun, Su-qin
Source:
Analytical methods 2016 v.8 no.10 pp. 2243-2250
ISSN:
1759-9679
Subject:
Gardenia jasminoides; adverse effects; blood pressure; chemical reactions; chlorogenic acid; fruits; heat; heat treatment; hemostasis; infrared spectroscopy; intestines; iridoids; pathogens; quinic acid; stomach; tannins; temperature; ursolic acid; virulence
Abstract:
... Before their medical use, thermal processing methods are frequently utilized to treat the traditional Chinese herbal materials to improve their efficacy or reduce their side effects. Understanding the temperature-dependent chemical reactions of herbal materials is necessary to explore the mechanisms and optimize the procedures of thermal processing. Being a quick, label-free, and nondestructive an ...
DOI:
10.1039/c5ay03134f

342. Mass change tracking approach as collection guidelines for aerosol and vapor samples released during e-cigarette smoking

Author:
Kim, Ki-Hyun
Source:
Analytical methods 2016 v.8 no.10 pp. 2305-2311
ISSN:
1759-9679
Subject:
aerosols; analytical methods; batteries; guidelines; pollutants; uncertainty; vapors
Abstract:
... As the popularity of electronic cigarettes (ECs) rises, there are growing concerns not only about the lack of a methodological basis for the quantification of various pollutants, but also the absence of proper regulations or guidelines for their production and distribution. Considering the urgent need for such guidelines, this study was carried out to explore the potent roles of key sampling varia ...
DOI:
10.1039/c5ay03385c

343. Monitoring biological effects of 20 nm versus 100 nm silica nanoparticles induced on a human renal cell line using Fourier transform infrared spectroscopy

Author:
Barron, Emmanuelle; Passagne, Isabelle; Auger, Aurélien; Travo, Adrian; Rascol, Estelle; L'Azou, Béatrice; Forfar, Isabelle
Source:
Analytical methods 2016 v.8 no.10 pp. 2233-2242
ISSN:
1759-9679
Subject:
Fourier transform infrared spectroscopy; apoptosis; colorimetry; cytotoxicity; dose response; fluorometry; human cell lines; humans; kidney cells; lipid peroxidation; nanoparticles; principal component analysis; screening; silica
Abstract:
... Due to their small size, nanoparticles (NPs) and particularly silica NPs (SiO₂-NPs) exhibit unique properties that confer them especially great biological reactivity. Thus, intensive research studies are performed to elucidate their potential toxicity and/or their interaction with biological systems. Standard assays focus on one specific biological event which require the use of several tests to d ...
DOI:
10.1039/c5ay03253a

344. Monitoring pyrophosphate anions via cobalt(ii)-modulated fluorescence of cadmium sulfide quantum dots

Author:
Liu, Jin-Xia; Ding, Shou-Nian
Source:
Analytical methods 2016 v.8 no.10 pp. 2170-2175
ISSN:
1759-9679
Subject:
3-mercaptopropionic acid; analytical methods; anions; aqueous solutions; cadmium; cobalt; fluorescence; moieties; monitoring; optical properties; photostability; quantum dots
Abstract:
... In this work, a novel and simple off–on fluorescent sensor is proposed for the selective detection of pyrophosphate (PPi) in an aqueous solution. The sensing approach is realized using fluorescent cadmium sulfide quantum dots (CdS QDs) capped with 3-mercaptopropionic acid, which displayed excellent optical properties and high photostability. The red emission of CdS QDs was significantly quenched i ...
DOI:
10.1039/c5ay03116h

345. Non-invasive prenatal detection of trisomy 21 by quantifying segmental duplication in maternal plasma with digital PCR

Author:
Xu, Shu; Zou, Bingjie; Xiang, Zheng; Miao, Mingzhu; Song, Qinxin; Huang, Huan; Wu, Haiping; Zhou, Guohua
Source:
Analytical methods 2016 v.8 no.10 pp. 2138-2143
ISSN:
1759-9679
Subject:
DNA; analytical methods; chromosomes; cost effectiveness; fetus; high-throughput nucleotide sequencing; polymerase chain reaction; trisomics
Abstract:
... Non-invasive detection of trisomy 21 is a safe and effective way for prenatal diagnosis. Although using next generation sequencing technology can achieve non-invasive detection of chromosomal abnormalities, a more convenient and cost-effective method is preferable for routine clinical applications. Here, we proposed a novel method for the detection of trisomy 21 by accurately quantifying the sligh ...
DOI:
10.1039/c6ay00122j

346. Simultaneous quantification of ion pairs in water via infrared attenuated total reflection spectroscopy

Author:
Rauh, F.; Mizaikoff, B.
Source:
Analytical methods 2016 v.8 no.10 pp. 2164-2169
ISSN:
1759-9679
Subject:
algorithms; aqueous solutions; calcium chloride; ions; magnesium chloride; models; multivariate analysis; potassium bromide; potassium chloride; seawater; sodium; sodium bromide; sodium chloride; sodium sulfate; spectroscopy
Abstract:
... In this study, ion pairs in aqueous solution were quantitatively and simultaneously determined via infrared attenuated total reflection (IR-ATR) spectroscopy. Seven salts that are occurring in natural seawater, i.e., NaCl, KCl, NaBr, KBr, MgCl₂, CaCl₂, and Na₂SO₄ were investigated. Multivariate data analysis was used to discriminate and assign the spectral information arising from each salt in cal ...
DOI:
10.1039/c5ay02874d

347. State-of-the-art strategies for the colorimetric detection of heavy metals using gold nanorods based on aspect ratio reduction

Author:
Alex, Sruthi Ann; Chandrasekaran, N.; Mukherjee, Amitava
Source:
Analytical methods 2016 v.8 no.10 pp. 2131-2137
ISSN:
1759-9679
Subject:
chemical species; colorimetry; gold; heavy metals; metal ions; nanogold; nanorods; optical properties; surface plasmon resonance; toxicity
Abstract:
... The differential polarization of the incident light along the short and long axes of AuNRs provide unique optical properties that can be used for sensing applications. Since the longitudinal surface plasmon resonance responds to variations in the local environments, it can be used as a sensitive tool for the detection of different analytes based on the modification in the aspect ratio of AuNRs cau ...
DOI:
10.1039/c5ay03428k

348. Surface molecular imprinting on CdTe quantum dots for fluorescence sensing of 4-nitrophenol

Author:
Jiang, Linye; Liu, Haijian; Li, Ming; Xing, Yue; Ren, Xueqin
Source:
Analytical methods 2016 v.8 no.10 pp. 2226-2232
ISSN:
1759-9679
Subject:
binding sites; detection limit; fluorescence; molecular imprinting; p-nitrophenol; polymers; quantum dots; standard deviation
Abstract:
... We tested a simple and economical approach to synthesize CdTe quantum dots (QDs). We then developed a MIP-capped CdTe QD fluorescent sensor by anchoring a molecularly imprinted polymer (MIP) layer on the surface of CdTe QDs using 3-aminopropyltriethoxysilane as the functional monomer and tetramethoxysilane as the cross-linker via a surface molecular imprinting process. The sensor possessed the sen ...
DOI:
10.1039/c5ay03160e

349. The classification and identification of complex chemical compositions in yanhusuo herb using UPLC-Q-TOF/MS

Author:
Yuan, Lei; Yin, Jia; Tian, Meng; Xie, Jiabin; Wang, Yuan; Hou, Zhiguo; Li, Yubo; Zhang, Yanjun
Source:
Analytical methods 2016 v.8 no.10 pp. 2274-2281
ISSN:
1759-9679
Subject:
Corydalis; Oriental traditional medicine; alkaloids; analytical methods; blood; ingredients; ions; pain; tubers
Abstract:
... The yanhusuo herb used in our study is derived from the yanhusuo's dried tubers, which belong to the Poppy Corydalis genus, and it is one of the traditional Chinese medicines (TCM) for relieving pain and promoting the circulation of blood and qi. The main components of yanhusuo include tetrahydroprotoberberine alkaloids, protoberberine alkaloids, protopine alkaloids and aporphine alkaloids. In thi ...
DOI:
10.1039/c5ay03162a