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You searched for: Journal name Analytica chimica acta Remove constraint Journal name: Analytica chimica acta Subject term ionization Remove constraint Subject term: ionization Subject term air Remove constraint Subject term: air Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Determination of polycyclic aromatic hydrocarbons and their oxy-, nitro-, and hydroxy-oxidation products

Author:
R.E. Cochran; N. Dongari; H. Jeong; J. Beránek; S. Haddadi; J. Shipp; A. Kubátová
Source:
Analytica chimica acta 2012 v.740 no. pp. 93-103
ISSN:
0003-2670
Subject:
air; derivatization; gas chromatography-mass spectrometry; ionization; methane; monitoring; oxidation; particulates; polycyclic aromatic hydrocarbons; smoke; solid phase extraction; temperature
Abstract:
... A sensitive method has been developed for the trace analysis of PAHs and their oxidation products (i.e., nitro-, oxy-, and hydroxy-PAHs) in air particulate matter (PM). Following PM extraction, PAHs, nitro-, oxy-, and hydroxy-PAHs were fractionated using solid phase extraction (SPE) based on their polarities. Gas chromatography–mass spectrometry (GC–MS) conditions were optimized, addressing inject ...
DOI:
10.1016/j.aca.2012.05.050

2. Direct analysis of ultra-trace semiconductor gas by inductively coupled plasma mass spectrometry coupled with gas to particle conversion-gas exchange technique

Author:
Masaki Ohata; Hiromu Sakurai; Kohei Nishiguchi; Keisuke Utani; Detlef Günther
Source:
Analytica chimica acta 2015 v.891 pp. 73-78
ISSN:
0003-2670
Subject:
air; ammonia; ammonium nitrate; analytical chemistry; argon (noble gases); atomic absorption spectrometry; detection limit; gas exchange; industry; ionization; ozone; particle size distribution; phosphine; regression analysis; semiconductors
Abstract:
... An inductively coupled plasma mass spectrometry (ICPMS) coupled with gas to particle conversion-gas exchange technique was applied to the direct analysis of ultra-trace semiconductor gas in ambient air. The ultra-trace semiconductor gases such as arsine (AsH3) and phosphine (PH3) were converted to particles by reaction with ozone (O3) and ammonia (NH3) gases within a gas to particle conversion dev ...
DOI:
10.1016/j.aca.2015.06.048

3. Ion mobility spectrometric analysis of vaporous chemical warfare agents by the instrument with corona discharge ionization ammonia dopant ambient temperature operation

Author:
Takafumi Satoh; Shintaro Kishi; Hisayuki Nagashima; Masumi Tachikawa; Mieko Kanamori-Kataoka; Takao Nakagawa; Nobuyoshi Kitagawa; Kenichi Tokita; Soichiro Yamamoto; Yasuo Seto
Source:
Analytica chimica acta 2015 v.865 pp. 39-52
ISSN:
0003-2670
Subject:
air; ambient temperature; ammonia; analytical chemistry; beta-mercaptoethanol; blood; correlation; detection limit; electric field; ionization; ions; molecular weight; nerve agents; nerve tissue; nitrogen; solvents; spectroscopy; vapors
Abstract:
... The ion mobility behavior of nineteen chemical warfare agents (7 nerve gases, 5 blister agents, 2 lachrymators, 2 blood agents, 3 choking agents) and related compounds including simulants (8 agents) and organic solvents (39) was comparably investigated by the ion mobility spectrometry instrument utilizing weak electric field linear drift tube with corona discharge ionization, ammonia doping, purif ...
DOI:
10.1016/j.aca.2015.02.004

4. Atmospheric-pressure solution-cathode glow discharge: A versatile ion source for atomic and molecular mass spectrometry

Author:
Andrew J. Schwartz; Kelsey L. Williams; Gary M. Hieftje; Jacob T. Shelley
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
air; analytical chemistry; atmospheric pressure; biochemical compounds; detection limit; electrodes; glass; ionization; ions; mass spectrometry; molecular weight; nitrates; statistical analysis
Abstract:
... An atmospheric-pressure solution-cathode glow discharge (SCGD) has been evaluated as an ion source for atomic, molecular, and ambient desorption/ionization mass spectrometry. The SCGD consists of a direct-current plasma, supported in the ambient air in the absence of gas flows, and sustained upon the surface of a flowing liquid cathode. Analytes introduced in the flowing liquid, as an ambient gas, ...
DOI:
10.1016/j.aca.2016.10.045

5. A simpler sampling interface of venturi easy ambient sonic-spray ionization mass spectrometry for high-throughput screening enzyme inhibitors

Author:
Ning Liu; Yang Liu; YuHan Yang; Lan He; Jin Ouyang
Source:
Analytica chimica acta 2016 v.913 pp. 86-93
ISSN:
0003-2670
Subject:
air; analytical chemistry; angiotensin-converting enzyme inhibitors; cost effectiveness; dose response; drugs; inhibitory concentration 50; ionization; mass spectrometry; screening; spectrometers
Abstract:
... High-throughput screening (HTS) is often required in enzyme inhibitor drugs screening. Mass spectrometry (MS) provides a powerful method for high-throughput screening enzyme inhibitors because its high speed, sensitivity and property of lable free. However, most of the MS methods need complicated sampling interface system. Overall throughput was limited by sample loading in these cases. In this st ...
DOI:
10.1016/j.aca.2016.01.051

6. Analysis of volatile compounds by open-air ionization mass spectrometry

Author:
Anil Kumar Meher; Yu-Chie Chen
Source:
Analytica chimica acta 2017 v.966 pp. 41-46
ISSN:
0003-2670
Subject:
air; analytical chemistry; cinnamon; cloves; coumarin; hepatotoxicity; ionization; mass spectrometry; models; odors; rapid methods; screening; solvents; spectrometers; volatile compounds
Abstract:
... This study demonstrates a simple method for rapid and in situ identification of volatile and endogenous compounds in culinary spice samples through mass spectrometry (MS). This method only requires a holder for solid spice sample (2–3 mm) that is placed close to a mass spectrometer inlet, which is applied with a high voltage. Volatile species responsible for the aroma of the spice samples can be r ...
DOI:
10.1016/j.aca.2017.03.005

7. Discrimination of bacteria by rapid sensing their metabolic volatiles using an aspiration-type ion mobility spectrometer (a-IMS) and gas chromatography-mass spectrometry GC-MS

Author:
Ileana Andreea Ratiu; Victor Bocos-Bintintan; Adrian Patrut; Victor Hugo Moll; Matthew Turner; C.L. Paul Thomas
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
Staphylococcus aureus; ionization; qualitative analysis; headspace analysis; bacteria; data collection; air; information processing; Escherichia coli; gas chromatography-mass spectrometry; electric field; microbial culture; monitoring; models; principal component analysis; detectors; electrical equipment; culture media; adsorption; ions; spectrometers; Bacillus subtilis; desorption
Abstract:
... The objective of our study was to investigate whether one may quickly and reliably discriminate different microorganism strains by direct monitoring of the headspace atmosphere above their cultures. Headspace samples above a series of in vitro bacterial cultures were directly interrogated using an aspiration type ion mobility spectrometer (a-IMS), which produced distinct profiles (“fingerprints”) ...
DOI:
10.1016/j.aca.2017.06.031

8. Non-proximate mass spectrometry using a heated 1-m long PTFE tube and an air-tight APCI ion source

Author:
Dilshadbek T. Usmanov; Kenzo Hiraoka; Hiroshi Wada; Masaya Matsumura; Sachiyo Sanada-Morimura; Hiroshi Nonami; Shinichi Yamabe
Source:
Analytica chimica acta 2017 v.973 pp. 59-67
ISSN:
0003-2670
Subject:
air; alkanes; analytical chemistry; atmospheric pressure; carbaryl; detection limit; drugs; food analysis; forensic sciences; hydrogen peroxide; ionization; mass spectrometry; medicine; quality control; spectrometers; trinitrotoluene
Abstract:
... Direct and rapid trace-level gas analysis is highly needed in various fields such as safety and security, quality control, food analysis, and forensic medicine. In many cases, the real samples are bulky and are not accessible to the space-limited ion source of the mass spectrometer. In order to circumvent this problem, we developed an airtight atmospheric-pressure chemical ionization (APCI) ion so ...
DOI:
10.1016/j.aca.2017.03.044