The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Takafumi Satoh - One of the best experts on this subject based on the ideXlab platform.
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correction to sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
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Sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction.
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
Yasuo Seto - One of the best experts on this subject based on the ideXlab platform.
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Sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction.
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
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correction to sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
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Stability and Detectability of Lachrymators and Their Degradation Products in Evidence Samples
Journal of Forensic Sciences, 2002Co-Authors: Mieko Kataoka, Yasuo Seto, Kouichiro Tsuge, Masaaki NoamiAbstract:The detectability and stability of Lachrymators [2-chloroacetophenone (CN), o-chlorobenzylidene malononitrile (CS) and synthetic capsaicin (nonivamide)] were investigated using dichloromethane extraction followed by gas chromatography-mass spectrometry. Ultrasonication at 40°C slightly improved the extraction yields of nonivamide to almost quantitative yield, compared to low yields (30 to 40%) of CN and CS. In terms of the stability of low spiked concentrations (6 to 7 _g), from the surface of glass and stainless steel (60 to 100 cm square), CN rapidly disappeared, CS disappeared gradually, and nonivamide was almost quantitatively recovered. The three Lachrymators in absorbent cotton (0.3 g) gradually disappeared. From water (20 mL), nonivamide gradually disappeared and was undetectable after eleven days. CN decreased gradually, and instead, acetophenone appeared. CS disappeared rapidly, and o-chlorobenzaldehyde, o-chlorobenzyl alcohol, and ochlorobenzoic acid were produced. The stability of high spiked concentrations of CN and CS in water (0.5 to 0.6 mg per 20 mL) was also investigated using liquid chromatography. CN was quantitatively recovered. The concentrations of CS decreased to about an8 % recovery level within 2 h. Concomitantly, o-chlorobenzaldehyde appeared at a concentration of about 80% recovery.
Yasuo Takayama - One of the best experts on this subject based on the ideXlab platform.
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correction to sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
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Sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction.
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
Hisashi Maruko - One of the best experts on this subject based on the ideXlab platform.
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correction to sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
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Sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction.
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
Shigeharu Yamashiro - One of the best experts on this subject based on the ideXlab platform.
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correction to sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
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Sensitive and comprehensive detection of chemical warfare agents in air by atmospheric pressure chemical ionization ion trap tandem mass spectrometry with counterflow introduction.
Analytical Chemistry, 2014Co-Authors: Yasuo Seto, Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi SatohAbstract:A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of chemical warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases and one precursor agent, five blister agents), and nonvolatile (three Lachrymators, three vomiting agents) agents in air. The approach can afford effective chemical ionization, in both positive and negative ion modes, for ion trap multiple-stage mass spectrometry (MSn). The volatile and nonvolatile CWAs tested provided characteristic ions, which were fragmented into MS3 product ions in positive and negative ion modes. Portions of the fragment ions were assigned by laboratory hybrid mass spectrometry (MS) composed of linear ion trap and high-resolution mass spectrometers. Gaseous agents were detected by MS or MS2 in negative ion mode. The limits of detection for a 1 s measurement were typically...
