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14 Newest Publications about the topic analytical reagents

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Colorimetric Response of Dithizone Product and Hexadecyl Trimethyl Ammonium Bromide Modified Gold Nanoparticle Dispersion to 10 Types of Heavy Metal Ions: Understanding the Involved Molecules from Experiment to Simulation

14-Jun-2013 | Yumin Leng; Yonglong, Li; An Gong; Zheyu Shen; Liang Chen; Aiguo Wu, Langmuir, 2013

A new kind of analytical reagent, hexadecyl trimethyl ammonium bromide (CTAB), and dithizone product-modified gold nanoparticle dispersion, is developed for colorimetric response to 10 types of heavy metal ions (Mn+), including Cr(VI), Cr3+, Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+, and Pb2+. The ...

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Application of Tb4O7 Nanoparticles for Lasalocid and Salicylate Determination in Food Analysis

19-Nov-2012 | María Luisa Castillo-García; María Paz Aguilar-Caballos; Agustina Gómez-Hens, Journal of Agricultural and Food Chemistry, 2012

The usefulness of Tb4O7 nanoparticles (NPs) as analytical reagents using sensitized luminescence as a detection system is described for the first time, and the results obtained are compared with those obtained using Tb(III) ions. Two drugs used in veterinary practice, namely, lasalocid (LAS) and ...

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Functional material based on polyvinylalcohol hydrogel for absorption spectrophotometry

26-Sep-2012 | Yu. V. Ermolenko, N. G. Novikova, E. G. Tsareva, Fibre Chemistry, 2012

A new functional composite material based on polyvinylalcohol hydrogel cross-linked by silica with metal-sensitive properties was proposed. The metal-sensitive properties of the functional material were provided through inclusion in the gel of the organic analytical reagent HOCAC. The isoelectric ...

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Carbonation Characteristics of Dry Sodium-Based Sorbents for CO2 Capture

08-Aug-2012 | Wei Dong; Xiaoping Chen; Ye Wu; Chuanwen Zhao, Energy & Fuels, 2012

Na2CO3 is one potential capture medium with the potential to decrease CO2 emission. Carbonation characteristics of four sodium-based sorbents were studied using thermogravimetric analysis (TGA), X-ray diffraction, scanning electron microscopy, and nitrogen adsorption apparatuses. Results show ...

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Development and Evaluation of a Colloidal Gold Immunochromatography Strip for Rapid Detection of Vibrio parahaemolyticus in Food

06-Jul-2012 | Ailing Guo, Hongli Sheng, Min Zhang, Renwei Wu, Ji Xie, Journal of Food Quality, 2012

Abstract To successfully establish an immunochromatography strip assay for rapid detection Vibrio parahaemolyticus in food, two kinds of specific antibodies were employed. In the strip test, polyclonal rabbit antibody (pAb) against V. parahaemolyticus was conjugated with 40 nm colloidal gold ...

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Toward in Vivo Imaging of Heart Disease Using a Radiolabeled Single-Chain Fv Fragment Targeting Tenascin-C

10-Nov-2011 | Norihiro Kobayashi; Kenichi Odaka; Tomoya Uehara; Kyoko Imanaka-Yoshida; Yoshinori Kato; Hiroyuki Oyama; Hiroyuki Ta ..., Analytical Chemistry, 2011

Antibodies specific to a particular target molecule can be used as analytical reagents, not only for in vitro immunoassays but also for noninvasive in vivo imaging, e.g., immunoscintigraphies. In the latter case, it is important to reduce the size of antibody molecules in order to achieve ...

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Nitron: a stable N-heterocyclic carbene that has been commercially available for more than a century

28-Oct-2011 | Christian Färber; Michael Leibold; Clemens Bruhn; Martin Maurer; Ulrich Siemeling, Chemical Communication, 2011

The analytical reagent Nitron is a mesoionic compound, whose structure consists of a cationic triazolium unit with an anionic PhN substituent. We provide clear evidence for the existence of a singlet diaminocarbene tautomer whose structure is composed of a 1,2,4-triazol-5-ylidene unit bearing an ...

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Development of a liposome-based immunochromatographic strip assay for the detection of Salmonella

23-Aug-2011 | Analytical and Bioanalytical Chemistry, 2011

Abstract Salmonella species are ubiquitous human pathogens which pose a dangerous threat to the elderly and children worldwide. In this study, to develop a more efficient assay procedure for the rapid detection of Salmonella Typhimurium, an immunochromatographic strip assay was developed ...

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Triphenyltetrazolium chloride as a new analytical reagent for molybdenum(VI): Application to plant analysis

09-Apr-2011 | D. Kostova, Journal of Analytical Chemistry, 2011

Solvent extraction of molybdenum(VI) ion associate with triphenyltetrazolium chloride (TTC) has been studied. TTC was proposed as reagent for the spectrophotometric determination of micro amounts of molybdenum(VI) at λmax 250 nm. The optimum conditions for extraction of molybdenum(VI) as an ...

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Long-Wavelength Fluorimetric Determination of Food Antioxidant Capacity Using Nile Blue as Reagent

02-Mar-2011 | J. Godoy-Navajas; M. P. Aguilar Caballos; A. Gómez-Hens, Journal of Agricultural and Food Chemistry, 2011

A method for the determination of the antioxidant capacity using long-wavelength fluorescence measurements is described for the first time. This method is a modification of the conventional oxygen radical absorbance capacity (ORAC) method that uses fluorescein or phycoerythrin and the generator ...

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