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This study investigated the consistency/inconsistency of carbon isotope compositions of chlorine-isotopologue pairs, e.g., 12C235Cl4 vs. 12C13C35Cl4, of individual organochlorines including two chloroethylenes, three polychlorinated…

Chemical Physics · Physics 2019-07-23 Caiming Tang , Jianhua Tan , Yujuan Fan , Ke Zheng , Qiuxin Huang , Xianzhi Peng

This study developed a method to measure compound-specific chlorine isotopologue distribution of organochlorines for source identification and apportionment. Complete chlorine isotopologues of individual model organochlorines were detected…

Instrumentation and Detectors · Physics 2017-10-19 Caiming Tang , Jianhua Tan

A recent article reported a comparison study concerning compound-specific chlorine isotope analysis (CSIA-Cl) of organochlorines using gas chromatography- isotope ratio mass spectrometry (GC-IRMS) and gas chromatography-quadrupole mass…

Instrumentation and Detectors · Physics 2017-10-30 Caiming Tang , Lianjun Baoc

Compound-specific chlorine isotope analysis (CSIA-Cl) is a practicable and high-performance approach for quantification of transformation processes and pollution source apportionment of chlorinated organic compounds. This study developed a…

Instrumentation and Detectors · Physics 2017-09-13 Caiming Tang , Jianhua Tan

Kinetic isotope effects (KIEs) taking place in mass spectrometry (MS) can provide in-depth insights into the fragmental behaviors of compounds in MS. Yet the mechanisms of KIEs in collision-induced dissociation (CID) in tandem MS are…

Chemical Physics · Physics 2019-07-23 Caiming Tang , Jianhua Tan , Peilin Zhang , Yujuan Fan , Zhiqiang Yu , Xianzhi Peng

Revelation of chlorine and bromine isotope fractionation of halogenated organic compounds (HOCs) in electron ionization mass spectrometry (EI-MS) is crucial for compound-specific chlorine/bromine isotope analysis (CSIA-Cl/Br) using gas…

Chemical Physics · Physics 2019-07-23 Caiming Tang , Jianhua Tan , Zhiqiang Shi , Caixing Tang , Songsong Xiong , Jun Liu , Yujuan Fan , Xianzhi Peng

Dechlorinated fragmental ions of organochlorines can be commonly found on electron ionization-mass spectrometry (EI-MS). Yet it is still unclear whether multiple dechlorination reactions taking place in EI-MS are concerted or stepwise. This…

Chemical Physics · Physics 2017-09-07 Caiming Tang , Jianhua Tan

Compound-specific chlorine/bromine isotope analysis (CSIA-Cl/Br) has become a useful approach for degradation pathway investigation and source appointment of halogenated organic pollutants (HOPs). CSIA-Cl/Br is usually conducted by gas…

Chemical Physics · Physics 2017-07-27 Caiming Tang , Jianhua Tan , Songsong Xiong , Jun Liu , Yujuan Fan , Xianzhi Peng

Revelation of the effects of isotope fractionation during fragmentation in electron ionization mass spectrometry (EI-MS) on compound-specific isotope analysis of chlorine and bromine (CSIA-Cl/Br) may be of crucial significance, yet a…

Chemical Physics · Physics 2017-07-05 Caiming Tang , Xianzhi Peng

Self-propelled colloidal particles exhibit rich non-equilibrium phenomena and have promising applications in fields such as drug delivery and self-assembled active materials. Previous experimental and theoretical studies have shown that…

Soft Condensed Matter · Physics 2024-02-01 Zhiwei Peng , Raymond Kapral

Polyisocyanates can be synthesized with chiral and achiral pendant groups distributed randomly along the chains. The overall chiral order, measured by optical activity, is strongly cooperative and depends sensitively on the concentration of…

Condensed Matter · Physics 2009-10-28 J. V. Selinger , R. L. B. Selinger

It has been reported that isotope fractionation can occur on gas chromatography (GC), yet little is known about concurrent dual-elements isotope fractionations on GC. Revelation of concurrent two-dimensional carbon and chlorine/bromine…

Chemical Physics · Physics 2019-07-23 Caiming Tang , Jianhua Tan

We use observations of chlorine-bearing species in molecular absorbers at intermediate redshifts to investigate chemical properties and $^{35}$Cl/$^{37}$Cl isotopic ratios in the absorbing sightlines. Chloronium (H$_2$Cl$^+$) is detected…

Astrophysics of Galaxies · Physics 2019-09-18 S. H. J. Wallstrom , S. Muller , E. Roueff , R. Le Gal , J. H. Black , M. Gerin

Today, the electron affinity is experimentally well known for most of the elements and is a useful guideline for developing ab initio computational methods. However, the measurements of isotope shifts on the electron affinity are limited by…

Atomic Physics · Physics 2015-06-12 Thomas Carette , Michel Godefroid

Main focus of this paper is to explore the possibility of findings two deuterated isotopomers of H2Cl+ (Chloronium) in and around the Interstellar Medium (ISM). Presence of Chloronium ion has recently been confirmed by Herschel Space…

Solar and Stellar Astrophysics · Physics 2015-06-18 Liton Majumdar , Ankan Das , Sandip K. Chakrabarti

Hydrogen bonding to chloride ions has been frequently discussed over the past 5 decades. Still, the possible role of such secondary intermolecular bonding interactions in hydrogen bonded networks has not been investigated in any detail.…

Chemical Physics · Physics 2020-05-22 Ildikó Pethes , Imre Bakó , László Pusztai

Effective disinfection is essential for maintaining water quality standards in distribution networks. Chlorination, as the most used technique, ensures safe water by maintaining sufficient chlorine residuals but also leads to the formation…

Systems and Control · Electrical Eng. & Systems 2024-09-16 Salma M. Elsherif , Ahmad F. Taha , Ahmed A. Abokifa

Recent experiments have found that polyisocyanates composed of a mixture of opposite enantiomers follow a chiral ``majority rule:'' the chiral order of the copolymer, measured by optical activity, is dominated by whichever enantiomer is in…

Condensed Matter · Physics 2009-10-28 J. V. Selinger , R. L. B. Selinger

Solar system materials are variably depleted in moderately volatile elements (MVEs) relative to the proto-solar composition. To address the origin of this MVE depletion, we conducted a systematic study of high-precision K isotopic…

Earth and Planetary Astrophysics · Physics 2020-03-25 Hannah Bloom , Katharina Lodders , Heng Chen , Chen Zhao , Zhen Tian , Piers Koefoed , Maria K. Peto , Yun Jiang , Kun Wang

K-Cl is a simple system displaying all four main types of bonding, as it contains (i) metallic potassium, (ii) elemental chlorine made of covalently bonded Cl2 molecules held together by van der Waals forces, and (iii) an archetypal ionic…

Materials Science · Physics 2014-05-14 Weiwei Zhang , Artem R. Oganov
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