Chromatography is a process that scientifically validates the advantages of nutrilite supplements by identifying phytonutrients within a plant and within the concentrates nutrilite utilises 59色层分析法能辨认植物内和健尔力浓缩素中所含有的植物化学因子，亦是一项能印证健尔力营养补充品之优势的科学方法。
This paper concentrates steranes and terpanes in high mature - over mature oil and source rock using distillation method and identifies with column chromatography and chromatography - mass spectrum , achieving better identification effect 用精馏法对该类原油和生油岩中的甾萜类化合物进行富集，然后通过柱色层分析和色谱质谱鉴定，得到了较为理想的甾萜类化合物鉴定效果。
Existing halimeter scores do correlate statistically with more complex chromatographic analyses and with the gradings of human odor judges , who personally smell the breath of study subjects and rate it for research purposes 现行口臭仪对口臭的判定，跟更复杂的色层分析法，或是气味?定师的分级判定（ ?定师会亲身闻嗅受测者的口气，并列出等级以供研究之用）比较，在统计上的结果是一致的。
Our products sell well on local market , in jiangsu , guangdong and other demestic markets , besides a wide range of colored plastic board for glasses ( 3 - layer laminated , 2 - layer laminated , single layer ) , we are also in a position to offer clients special colorful plastic board materials 除生产各种色层眼镜胶板外（三层两层单层） ，还立至于创新，不断研制出本公司所特有的花色胶板，来满足不同顾客的要求。
By infrared spectrum study , the limonite ( feooh nh2o ) can be considered the main colorating mineral in the yellow and red jadeite , and the hematite is another colorating mineral in the red jadeite . the difference of color tone is due to the n value in the molecular formula feooh nh2o and the content of crystal water and adsorbent water . the iron ion came from the effloresced and eroded rocks , and formed fe ( oh ) 3 colloid reacted with the surface water 周围矿床的风化蚀变为表生水提供了铁质，形成弱酸性的含fe ( oh ) _ 3胶体的水溶液，表生水流经翡翠矿石时， fe ( oh ) _ 3胶体附着在岩石的表面，经过脱水结晶和吸附，形成褐铁矿胶体，褐铁矿胶体沿裂隙或松散的矿物颗粒进入翡翠岩石中，逐渐累积沉淀，形成次生色层。
Because the concentration of zirconium in uranium has large ranges , from 1 . 50xlo ' 6 - 3 . 8g / gu , not only how to decrease the remainder of uranium to eliminate its determinate effect but also how to acquire higher recovery of zirconium is considered , so the method of silica gel , the method of tbp levextrel resin chromatography , the method of tta chromatography and the method of tta extraction are compared . then tta extraction is chosen to acquire the ideal separation purpose . compared with icp - ms and icp - aes , xrf has characters of high repeatability , stability , low cost , high concentration elements analysis , the ability to determinate solid sample and having comprehensive practicability , but xrf has lower sensitivity , so how to increase the concentration of the sample to acquire better precision is a difficult problem , the optimum of operating condition : the integral time of spectral lines is 60s , the integral time of background lines is 20s , the voltage of xrf is 50kv , the electric current is 50ma 由于铀中锆的含量范围很广，从1 . 50 10 ~ ( - 6 ) 3 . 8g / gu ，在分离和测量时，既要考虑尽量地减少铀的残留量以消除铀对锆测量产生的影响，又要获得锆的理想的回收率，因此本文在分离方法的选择上比较了硅胶吸附分离法， cl - tbp萃取色层法， tta萃取色层法和tta萃取分离法的优缺点，认为tta萃取分离法可以达到理想的分离效果。
