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	Microplasma Source Based on a Dielectric Barrier Discharge for the Determination of Mercury by Atomic Emission Spectrometry
	Zhu, Zhenli ; Chan, George C. -Y. ; Ray, Steven J. ; Zhang, Xinrong ; Hieftje, Gary M.
	2010-05-06 ; 2010-05-06
关键词	CAPACITIVELY COUPLED MICROPLASMA MICROWAVE-INDUCED PLASMA COLD-VAPOR TECHNIQUE ON-A-CHIP ATMOSPHERIC-PRESSURE ABSORPTION-SPECTROMETRY GAS-CHROMATOGRAPHY MICROSTRIP TECHNOLOGY ROTATIONAL TEMPERATURE HYDRIDE GENERATION Chemistry, Analytical
中文摘要	A low-power, atmospheric-pressure microplasma source based on a dielectric barrier discharge (DBD) has been developed for use in atomic emission spectrometry. The small plasma (0.6 mm x 1 mm x 10 mm) is generated within a glass cell by using electrodes that do not contact the plasma. Powered by an inexpensive ozone generator, the discharge ignites spontaneously, can be easily sustained in Ar or He at gas flow rates ranging from 5 to 200 mL min(-1), and requires less than 1 W of power. The effect of operating parameters such as plasma gas identity, plasma gas flow rate, and residual water vapor on the DBD source performance has been investigated. The plasma can be operated without removal of residual water vapor, permitting it to be directly coupled with cold vapor generation sample introduction. The spectral background of the source is quite clean in the range from 200 to 260 nm with low continuum and structured components. The DBD source has been applied to the determination of Hg by continuous-flow, cold vapor generation and offers detection limits from 14 (He-DBD) to 43 pg mL(-1) (Ar-DBD) without removal of the residual moisture. The use of flow injection with the He-DBD permits measurement of Hg with a 7.2 pg limit of detection, and with repetitive injections having an RSD of < 2% for a 10 ng mL(-1) standard.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/13426]
专题	清华大学
推荐引用方式 GB/T 7714	Zhu, Zhenli,Chan, George C. -Y.,Ray, Steven J.,et al. Microplasma Source Based on a Dielectric Barrier Discharge for the Determination of Mercury by Atomic Emission Spectrometry[J],2010, 2010.
APA	Zhu, Zhenli,Chan, George C. -Y.,Ray, Steven J.,Zhang, Xinrong,&Hieftje, Gary M..(2010).Microplasma Source Based on a Dielectric Barrier Discharge for the Determination of Mercury by Atomic Emission Spectrometry..
MLA	Zhu, Zhenli,et al."Microplasma Source Based on a Dielectric Barrier Discharge for the Determination of Mercury by Atomic Emission Spectrometry".(2010).

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