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31 Newest Publications about the topic elemental analyzers

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Timing of isotopic integration in marine mammal skull: comparative study between calcified tissues

11-Apr-2013 | Marjorie Riofrío‐Lazo, David Aurioles‐Gamboa, Rapid Communications in Mass Spectrometry, 2013

RATIONALE Tissues with different turnover rates have different isotope compositions and reflect the different periods in an animal's life when the isotopes are incorporated during the growth of tissues. Bone is one of the most used tissues for reconstruction of an animal's diet; however, the ...

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Synthesis of one-dimensional Tl2O3 nano-structures from thermolyses of a new two-dimensional thallium(I) supramolecular polymer with secondary polyhapto Tl⋯C interactions

01-Apr-2013 | Journal of Organometallic Chemistry, 2013

1 June 2013 Publication year: 2013Source:Journal of Organometallic Chemistry, Volume 733 A new thallium(I) two-dimensional supramolecular polymer, [Tl6(biphO)4(biphOH)4(NO3)2] n (1), biphOH=4-hydroxy biphenyl, has been synthesized and characterized by elemental analyzes and IR ...

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Determination of critical micelle concentration of dendritic surfactant synthesized via a selective ring-opening addition reaction

25-Mar-2013 | Microchemical Journal, 2013

September 2013 Publication year: 2013Source:Microchemical Journal, Volume 110 An azetidine-2,4-dione was applied to synthesize dendrons with four carbons in the end ([G-0.5]-C4 and [G-1]-C4) via a selective ring-opening addition reaction, which was subsequently extended to obtain a ...

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Aluminum complexes of bidentate phenoxy-amine ligands: Synthesis, characterization and catalysis in ring-opening polymerization of cyclic esters

25-Mar-2013 | Journal of Organometallic Chemistry, 2013

1 May 2013 Publication year: 2013Source:Journal of Organometallic Chemistry, Volume 731 A series of aluminum complexes 1a–5a bearing bidentate phenoxy-amine ligands were synthesized and characterized by NMR spectroscopy and elemental analyzes. The variation of the ortho-substituent ...

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Authentication of Pure L‐Leucine Products Manufactured in China by Discriminating between Plant and Animal Sources Using Nitrogen Stable Isotope Technique

04-Mar-2013 | Jingyu Huang, Philip N. Nkrumah, Gloria Appiah‐Sefah, Shijiang Tang, Journal of Food Science, 2013

Abstract  L‐leucine products among other branched chain amino acid supplements are highly susceptible to economically motivated adulteration. Curbing this menace is critical and timely. Hence, the δ15N composition of the L‐leucine derived from plants and animals sources was estimated. The ...

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Gas chromatography combined with mass spectrometry, flame ionization detection and elemental analyzer/isotope ratio mass spectrometry for characterizing and detecting the authenticity of commercial essential oils of Rosa damascena Mill.

11-Feb-2013 | Federica Pellati, Giulia Orlandini, Katryna A. Leeuwen, Giulia Anesin, Davide Bertelli, Mauro Paolini, Stefania Benv ..., Rapid Communications in Mass Spectrometry, 2013

RATIONALE The essential oil of Rosa damascena Mill. is known for its fine perfumery application, use in cosmetic preparations and for several pharmacological activities. Due to its high value, it can be easily adulterated with flavors or cheaper oils. This study is aimed at a detailed ...

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The effect of devulcanization level on mechanical properties of reclaimed rubber by thermal‐mechanical shearing devulcanization

30-Jan-2013 | Guoliang Tao, Qianhu He, Yanping Xia, Guangcheng Jia, Haicun Yang, Wenzhong Ma, Journal of Applied Polymer Science, 2013

Abstract Ground tire rubber (GTR) with crosslinked structure has hardly any plasticity and processability, which makes its property very poor. Thermal‐mechanical shearing devulcanization method can effectively destroy the crosslinked structure and restore GTR a certain extent of plasticity and ...

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Direct gas injection method: A simple modification to an elemental analyzer/isotope ratio mass spectrometer for stable isotope analysis of N and C from N2O and CO2 gases in nanomolar concentrations

21-Nov-2012 | Madhav V. Machavaram, Jake J. Beaulieu, Marc A. Mills, Rapid Communications in Mass Spectrometry, 2012

RATIONALE Stable isotope analyses of trace amounts of nitrous oxide gas require special instrumentation and laborious sample preparation methods that have hindered many laboratories from measuring this potent greenhouse gas. A simple modification to an Elemental Analyzer (EA) coupled to an ...

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Synthesis and characterization of starch‐graft‐polyacrylamide copolymers and their application as filtration control agents in drilling fluid

29-Oct-2012 | Wen‐Yu Guo, Bo Peng, Journal of Vinyl and Additive Technology, 2012

Abstract Some starch‐graft‐polyacrylamide copolymers were prepared by the polymerization of corn starch with acrylamide in aqueous medium using a complex initiation system consisting of ceric ammonium sulphate and ammonium persulphate. The copolymers were applied to water‐based drilling fluid ...

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Adsorption of copper(II), cadmium(II), nickel(II) and lead(II) from aqueous solution using biosorbents

21-Sep-2012 | Huan-Ping Chao, Chung-Cheng Chang, Adsorption, 2012

Three types of agricultural waste, citrus maxima peel (CM), passion fruit shell (PF) and sugarcane bagasse (SB), were used to produce biosorbents for removing the heavy metal ions of copper(II), cadmium(II), nickel(II) and lead(II) from a pH 5.0 solution. The properties of biosorbents were ...

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