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- As a monitoring technique with spectroscopy, the differential optical absorption spectroscopy technique(DOAS)uses the narrow molecular absorption bands to identify trace gases and their absorption strength to retrieve concentrations of the trace gases. 差分吸收光谱技术(DOAS:DifferentialOpticalAbsorptionSpectroscopy)是一种光谱监测技术,其基本原理就是利用空气中的气体分子的窄带吸收特性来鉴别气体成分,并根据窄带吸收强度来推演出微量气体的浓度。
- molecular absorption band 分子吸收带
- And the resonance absorption band from 460nm to600nm becomes weak, too. 在pH4.;0 NaAc-HAc的缓冲溶液中,人血清白蛋白(HSA)在209nm处有一个吸收峰,在350nm处有一个荧光峰,其同步散射较弱。
- The suitable ultraviolet absorption band is selected via experiment. 通过实验研究选定检测紫外吸收波长。
- Moreover,the presence of Ce~(3+) impurity causes the absorption band at 306nm. 同时,杂质离子Ce3+的存在也导致晶体出现306nm的吸收带。
- Determination of neptunium in nitric acid solutions by molecular absorption spectrophotometry?? 用分子吸收分光光度法测定硝酸溶液中的镎
- CHEMICAL ANALYSIS OF STEEL. MOLECULAR ABSORPTION SPECTROPHOTOMETRIC DETERMINATION OF ZIRCONIUM (AFTER SEPARATION BY EXTRACTION). 钢的化学分析。锆含量的测定。分子吸收分光光度法。(提取分离后)
- As La ion exchange is about 80%, absorption band of the specific La cation-pyridine complex was observed. 当La交换度达80%25后,出现吡啶与La离子吸附络合物的吸收带。
- As a single crystal ithas large emission cross, wide absorption band, low threshold, high thermoconductivity. 具有大的受激发射跃迁截面,宽吸收带,低激光发射振荡阈值,高热传导率等特点。
- Sulfides were determined by gas phase molecular absorption spectrometry with AAS,using Zn HCL at wavelength of 202.6nm or 213.9nm. 利用气相分子吸收光谱原理,在原子吸收光谱仪上,用Zn灯的202.;6nm及213
- Technology of nuclear fuel cycle.Determination of neptunium in nitric acid solutions by molecular absorption spectrophotometry. 核能.;核燃料循环技术
- Excitation spectra show that there appears a strong absorption band of Ce3+, in addition to the original f-f transition sharp lines of Tb3+ or Dy3+. Ce~(3+)对Tb~(3+)和Dy~(3+)离子发光的敏化作用;
- The spectra of Si-oil which contaminated the mirror were measured. The infrared absorption band and absorption coefficient of Si-oil were obtained. 对被硅油污染的镜面进行了光谱测试,测得了硅油的红外吸收波段及吸收系数。
- The calculated results show that the plasmon absorption band depends on both the size and shape of the gold noanoparticles. 计算结果显示,金纳米粒子的等离子体吸收带同时受到粒子尺寸和形状的影响,但来自形状的影响更为明显。
- Instead of forming peaks only some broadening of the absorption band was observed for the system composed of weak electron-acceptors and aromatic amines. 弱的电子受体使芳胺紫外吸收峰加宽,而强的电子受体如四氰基乙烯(TCNE)与芳胺作用产生的CTC显示新峰。
- Mg~(2+), which is required for carboxylation of PEP, induced a spectrum with a wide positive absorption band whose maximum is located at 275nm, and a negative peak at 237nm. Mg~(2+)产生的差光谱在275nm附近为正的阔峰,在237nm处为一负峰。
- The UV-Visible absorption band of 4. 5% Mo doped TiO2 reached to about 460 nm, the removal efficiency of methylene blue was 58. 3% , and TOC was 52. 5%. Mo6+掺杂的质量分数为4.;5%25时;样品的吸收带边可达460 nm;对40 mg/L亚甲蓝反应2 h的降解率为58
- The absorption spectrum for ZnWO_4~2Oe~(4+) single crystals shows that there is a strong absorption band at 323nm, which improves the effect of luminescence. ZnWO_4:Ge~(4+)单晶的吸收谱在323nm处有一个强的吸收带,有助于荧光效率的提高。
- Because J-aggregates of cyanine dye exhibit sharp absorption bands (i. e. 用紫外-可见分光光度计测定了菁染料J-聚集的反射光谱曲线。
- Double beam molecular absorption spectrometer 双光束分子吸收光谱仪