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1)  sampling by concentration
富集采样
2)  the enriching sampling method
富集采样法
1.
The main factors,effecting determination of the sampling volumn in the monitoring of air and waste gas samples by the enriching sampling method,are discussed in the paper.
讨论了富集采样法监测空气和废气样品时确定采样体积的主要因素,给出了富集采样法监测空气和废气样品时采样体积的确定方法和实例。
3)  sample enrichment
样品富集
1.
Due to the good permeability,fast mass transfer property,high stability,and the ease of modification,monolithic materials have been widely used in microcolumn separation systems,not only as the stationary phase for capillary electrochromatography(CEC) and microcolumn high performance liquid chromatography(μ-HPLC),but also as the matrix for sample enrichment and enzyme reactor.
它不仅可以作为微柱液相色谱和毛细管电色谱的固定相,而且也可用作样品富集和酶反应器的载体。
4)  sample stacking
样品富集
1.
A 1-D mathematical model,including the electrical potential distribution equation,the buffer concentration equation,as well as the sample electromigration and diffusion equation,is developed through proper simplifications and assumptions to study the sample stacking process in capillary electrophoresis.
毛细管电泳样品电堆积富集过程可以浓缩样品组分,从而提高检测灵敏度,是一种有效的样品富集技术。
5)  sampling preconcentration
进样富集
6)  sampling [英]['sɑ:mplɪŋ]  [美]['sæmplɪŋ]
样品采集
1.
A review for the related studies is presented from several aspects,including sources and formation,environmental effects,sampling,and measurements.
主要从含碳气溶胶来源及成因、环境影响、样品采集及测试等方面对国内外相关研究进行了评述,讨论了有机碳和元素碳研究中存在的关键和难点问题,并对其发展前景进行了展望。
补充资料:被动式大气采样器
分子式:
CAS号:

性质:无需动力,通过气体扩散采集气体污染物的一种采样装置。该采样品是根据气体扩散原理和选择吸收的特点设计而成的。其结构由三部分构成(见图示)。A:上盖。上面放置浸渍采样膜。B:圆环。为气体扩散通道;C:带孔下盖。放不锈钢网和聚四氟乙烯微孔滤膜。整个采样器可放入筒状套匣,作为贮备容器。适用于各种场所的空气监测之用;尤其在无动力供给的边远、山岭地区更为适用。采样周期可长达1~2个月。所得污染物为在采样时间区段内空气中的平均浓度。

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