共查询到17条相似文献,搜索用时 62 毫秒
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微全分析系统专用微型电源的研制 总被引:1,自引:0,他引:1
芯片毛细管电泳(Chip-CE)是当前微全分析系统(μ-TAS)中最活跃的领域和发展前沿.Chip-CE包括微芯片、高压电源和检测器等3个主要部分. 相似文献
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微型全化学分析系统 总被引:2,自引:0,他引:2
赵国城 《理化检验(化学分册)》2004,40(6):362-363
微型全化学分析系统,是微芯片的概念,来自计算机芯片的发展,至今不过几年时间,但进展神速,国外迄今已有近百家公司从事微芯片相关工艺、设备及检测手段和软件的发展。 相似文献
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Ineke Joosten Maarten R. van Bommel Regina Hofmann-de Keijzer Hans Reschreiter 《Mikrochimica acta》2006,155(1-2):169-174
Due to the special conditions in the Bronze Age and Hallstatt Period salt-mines of Hallstatt, Austria, a large number of archaeological
textile fragments, dated from 1400 to 400 BC, can be found. Textiles of good condition from these periods are quite unique.
The fibres are identified as wool and most of the fragments still have colours i.e. yellow, green, olive-green, brown, blue
and black. To obtain information about the dyeing techniques used in this period, dyestuffs analyses are performed by high
performance liquid chromatography coupled to photo diode array detection (HPLC-PDA) and mordant analysis by scanning electron
microscopy with energy dispersive X-ray spectroscopy (SEM/EDS). In addition, the condition of the textile fibres is assessed
by SEM. The analyses revealed that all textiles were dyed with plant dyes and insect dyes. The yellow plant dyes and the red
insect dyes are mordant dyes but the identification of mordants turned out to be difficult. SEM/EDS analyses of small uncontaminated
areas on the fibre showed that the elements aluminium, iron and copper are present in many samples. These elements could originate
from a mordant or from the mine. The condition of the fibres was assessed by the presence of the characteristic scales on
the wool, tears, cuts and particles from the mine. It was found that a relation exists between the copper content of the fibres
and their condition. Degraded fibres contain more copper. Black textile fragments which are most possibly coloured by iron
gall-black show as well degradation phenomena. 相似文献
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