目的：研究丹参药材中丹酚酸类成分的固相萃取预富集方法。
AIM: To apply the solid phase extraction (SPE) on salvianolic acids in Radix Salvia Miltiorrhizae by means of high performance liquid chromatography with mass spectroscopic detector (HPLC MSn).
预富集培养基成分：含万古霉素，孔雀绿和奶的双效BPW。
Composition pre-enrichment broth: double strength BPW with vancomycin, malachite green, and milk.
本文在讨论汉中地区地质背景的基础上，对金矿预富集的特征提出了认识。
On the basis of discussion about geologic Settings of the Hanzhong region, the understanding of characteristics of gold preconcentration is presented in this paper.
提出了浊点萃取预富集氢化物发生-原子吸收光谱法测定痕量汞的新方法。
The method for the determination of trace mercury in water samples by hydride generation atomic absorption spectrophotometry after cloud point extraction was proposed.
结果发现，经驯化后的污泥可很好的起到对该废水水中金属离子预富集作用。
The results show that the domesticated activated sludge can enrich better these metal ions in the wastewater.
本文研究了流动注射在线编结反应器吸附预富集火焰原子吸收测定痕量铅的体系。
A flow injection on-line adsorptive preconcentration system with a knotted reactor (KR) for flame atomic absorption spectrometric (FAAS) determination of trace lead was developed.
采用铅火试金预富集，ICP - AES法同时测定铜阳极泥中微量铂和钯含量。
The method of ICP-AES for simultaneous determination of Platinum and Palladium content in copper anode mud with lead fire assaying pre-concentration has been established.
通过表面活性剂浊点特性实现胶束相分离以达到样品预富集，是一种新兴的液-液萃取方法。
It is a new method for liquid - liquid extraction that the preconcentration of samples is based on micelle - mediated phase separation by the character of surfactant cloud point.
本文研究了三辛基氧化膦(topo)学修饰电极预富集石墨炉原子吸收法测定水样中痕量锑。
A preconcentration on TOPO chemically modified electrode-graphite furnace AAS method has been developed for the determination of trace antimony in water samples.
然而，它在金属萃取和预富集中的应用还不十分广泛，尽管它在无机分析中的技术能力看起来也似乎非常有前景。
However, its application in metal extraction and preconcentration has been much less extensive, although the capabilities of the technique in inorganic analysis also appear to be very promising.
重点介绍了用原子吸收法测定铊时，基体改进剂、进样方式、反应机理以及预富集技术对提高方法灵敏度的作用。
Emphasis is made to the methods used in the improvement of sensitivity of Tl, including matrix modification, sampling modes and pre-conc e ntration techniques.
重点介绍了用原子吸收法测定铊时，基体改进剂、进样方式、反应机理以及预富集技术对提高方法灵敏度的作用。
Emphasis is made to the methods used in the improvement of sensitivity of Tl, including matrix modification, sampling modes and pre-conc e ntration techniques.
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