preconcentration 中文意思是什麼

preconcentration 解釋
預富集
  1. Study on determination of trace cadmium in ginkgo biloba linn by nano - tio2 preconcentration - single - sweep polarography

    單掃描極譜法測定絲裂黴素的研究
  2. Methods for chemical analysis of tantalum and niobium ores - determination of niobium content - preconcentration and separation with silica gel - thiocyanate extraction photometric method

    鉭礦石鈮礦石化學分析方法硅膠富集分離-硫氰酸鹽萃取光度法測定鉭量
  3. Methods for chemical analysis of tantalum and niobium ores - determination of tantalum content - preconcentration and separation with silica gel - butyl rhodamine b extraction photometric method

    鉭礦石鈮礦石化學分析方法硅膠富集分離-丁基羅丹明b萃取光度法測定鉭量
  4. Determination of trace scandium in coal gangue by spectrophotometry after separation and preconcentration with flow injection ion exchange

    分光光度法測定石煤渣中痕量鉭
  5. Determination of trace tantalum in stone coal slag with flow injection - ion exchange separation and preconcentration - spectrophotometry

    分光光度法測定石煤渣中痕量鉭
  6. The developments and applications in flow injection vapor generation atomic absorption spectrometry ( fi - vgaas ) in recent years were reviewed, involving on line separation and preconcentration, on line digestion and prereduction, on - line speciation analysis and typical applications of these techniques

    摘要綜述了近年來流動注射蒸氣發生原子吸收光譜分析（ fi - vgaas ）技術的進展及應用，主要包括在線分離和預濃集、在線消化、在線預還原、在線形態分析技術。
  7. Application of plastic foam preconcentration - tmk extraction - microbead colorimetry in determination of gold in field

    硫代米蚩酮萃取微珠比色法在野外測金的應用
  8. Standard test method for determining radionuclides in soils by inductively coupled plasma - mass spectrometry using flow injection preconcentration

    使用流體噴射預集中的感應耦合等離子體質譜測量法測定土壤中放射性核素的標準試驗方法
  9. Study on the determination of trace cu by ddtc chelating resin preconcentration and thin layer resin phase spectrophotometry

    螯合樹脂預濃集薄層樹脂相吸光光度法測定痕量銅的研究
  10. Synthesis of dithiotricyanic acid immobilized silica gel and its application to the faas determination of gold after on - line preconcentration and separation

    二巰基取代三聚氰酸鍵合硅膠的合成及其在金的在線預濃集分離火焰原子吸收光譜分析中的應用
  11. Standard practice for preparation of water samples using reductive precipitation preconcentration technique for icp - ms analysis of trace metals

    用微量金屬的icpms分析法使用快速還原濃縮技術對水樣品制備的標準實施規程
  12. Standard test method for analysis of ores, minerals, and rocks by the fire assay preconcentration optical emission spectroscopy

    用燃燒檢測預精選技術對礦石礦物和巖石做光譜測定分析的標準試驗方法
  13. Fia - faas determination of trace amounts of platinum - on line preconcentration on micro - column

    流動注射在線微柱預富集火焰原子吸收光譜法測定痕量鉑
  14. Determination of trace magnesium by thin layer resin phase spectrophotometry with loading resin preconcentration

    負載樹脂預富集薄層樹脂相分光光度法測定痕量鎂
  15. On - line fi displacement sorption preconcentration coupled with faas for trace sliver analysis in geological materials

    流動注射在線置換吸附預富集與火焰原子吸收聯用分析地質樣品中痕量銀
  16. Study and application of separation - preconcentration of trace nb and ta in geological samples with p204 extraction resin

    204萃淋樹脂對地質樣品中痕量鈮和鉭的分離富集研究及其應用
  17. Ambient air - determination of total non - methane organic compounds - cryogenic preconcentration and direct flame ionization detection method

    周圍空氣.全部無甲烷有機化合物的測定.低溫預濃縮和直接火焰電離探測法
  18. Solid - phase extraction ( spe ) is an effective tool for the preconcentration of trace elements and their separation from various sample constituents

    固相萃取對于痕量元素的預濃縮和將元素從各種樣品中分離是一種有效的工具。
  19. Nmoc standard test method for determination of non - methane organic compounds in ambient air using cryogenic preconcentration and direct flame ionization detection method metric

    利用低溫預濃縮和直接火焰檢測法測定周圍空氣中非甲烷有機化合物
  20. Numerous applications of spe to the separation and preconcentration of different elements and their species, including on - line combinations with instrumental determination techniques, are described and tabulated

    固相萃取在不同元素及其樣品的分離和預濃縮中的很多應用包括用儀器測定在線化合技術，都進行了描述和列表。
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