查询词典 spectrophotometry

A method for the determination of high-content of copper in copper materials by flame atomic absorption spectrophotometry using sub-sensitive spectral line at 249.20 nm is reported in this paper.

中文摘要：利用铜的原子吸收光谱次灵敏线249.20 nm，并适当偏转燃烧器角度，原子吸收分光光度法测定含铜物料中的高含量铜。

RESULTS: We built up two standard curves with the results of UV spectrophotometry and wet weight, to plate count, respectively. The analysis of accuracy rating proved that there was an approximal linear correlation between the two standard curves ranging from 105/mL to 108/mL.

结果： 建立了紫外分光光度计法和湿重法相对于平板计数法的标准曲线，通过准确度分析表明在细菌含量在每毫升105～108之间时，两标准曲线线性关系良好。

The method has been applied to the determination of sulfate radical in boric acd and the results were consistent with those obtained by spectrophotometry.

方法已应用于硼酸中硫酸根的测定，结果与光度法的测定结果相一致。

The organic samples of P-Acetamidophenol and acetanilide with UV- Spectrophotometry in two different wavelengths are analyzed in the paper.

紫外光谱在有机物剖析中主要的用途是测定分子结构和利用紫外分光光法进行有机混合物的成分定量分析。

METHODS: We counted M. vaccae by UV spectrophotometry, wet weight measurement and plate count method, and built up two standard curves. One was drawn according to the results of UV spectrophotometry to plate count and the other was humid weight to plate count.

采用紫外分光光度计法、测湿重法、平板菌落计数法测定细菌数，建立紫外分光光度计法、测湿重法对平板菌落计数法的标准曲线。

By using Atomic Absorption Spectrophotometry and Atomic Fluorescence Spectrophotometry, the contents of heavy metals in sullages and the flocculated sullages were analyzed.The Samples were collected from the selected region of the six tipical areas in Jiangsu province for four seasons, including Ancinet Canel in Wuxi, Hengcaolugang in Wujiang, Meiliang Bay in Taihu, Hongze Lake in Hongze, Xiexinggang in Qidong, the port in Lianyungang.

本文运用原子吸收光谱法和原子荧光光谱法，分析了江苏省内的这六个典型地区的春夏秋冬四个季节的淤泥不同层面的重金属含量及絮凝前后泥样和水体中的重金属含量。

A novel method for determination of benzoyl peroxide with spectrophotometry was developed. Inclusion ratio of β cyclodextrin to dibenzoy peroxide and benzoic acid is obtained with spectrophotometry.The mechanism of the inclusion was studied,too. The results showed that β-CD react with dibenzoyl peroxide to form a 1:1 or 2:1 host-guest complex, with the apparent formation constants of 5.0× 10~2and 2.5× 10~4 , respectively.β-CD reacts with benzoic acid to form a 1:1 host-guest complex with the apparent formation constant of 6.9 × 10~2 after the dibenzoyl peroxide was reduced by hydroxyl ammonium chloride.

建立了用β环糊精测定过氧化苯甲酰的分光光度法，并测定了β环糊精与过氧化苯甲酰和苯甲酸的包结比，随着β-CD浓度的增大，可与BPO分别形成1：1或2：1的包容络合物，包结常数分别为5.0×10~2和2.5×10~4，与苯甲酸形成1：1的包容络合物，包结常数为6.9×10~2；由于包结物的吸光度值比过氧化苯甲酰的吸光度值大大增加，建立了一种当β-CD存在下，在水溶液中测定过氧化苯甲酰的方法。

A method for the determination of mixedness degree of red mud and limestone by spectrophotometry with 1,10-phenanthroline was developed. The mixture of red mud and limestone was dissolved by hydrochloric acid, and iron content in the sample solution was determined by spectrophotometry with 1,10-phenanthroline.

用盐酸提取赤泥和石灰石的混合料后，通过邻二氮菲分光光度法测定提取液中铁含量，进而求得混合料中氧化铁的质量分数，以此来衡量混匀度。

KEY WORDS］ ofloxacin; dexamethson sodium phos phate; ultraviolet spectrophotometry; double-wavelength spectrophotometry

关键词］氧氟沙星；地塞米松磷酸钠；紫外分光光度法；双波长分光光度法

METHODS:The measurment procedure was carried out using pH 8 phosphate salt buffer as solvent.Phenol red was determined by dual wavelength spectrophotometry at 558 nm and 570 nm. Tinidazole was determined by multiple regression spectrophotometry at 290,300,318 nm and 340 nm.

以pH 8磷酸盐缓冲液为溶剂，采用双波长法在558 nm和570 nm测定酚红，以多元回归分光光度法在290，300，318，340 nm测定替硝唑。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。