查询词典 spectrophotometry

A sensitive and new solid-phase spectrophotometry for the determination of tartrazine in soft drinks has been developed.

本文报导了一个灵敏的固体相光度法测定清凉飮料中微量柠檬黄的新方法。

Sensitive and new solid-phase spectrophotometry for the determination of tartrazine in soft drinks has been developed.

bstract 本文报导了一个灵敏的固体相光度法测定清凉飮料中微量柠檬黄的新方法。

Methods:the dispersible tablets was prepared by taking lose subsfrits hydroxypropyl cellulose and hydroxypropymethyl cellulose as excipient.the phenobarbital content in tablets was determined by uv spectrophotometry at 240 nm.results:the uniformity test of dispersion showed that the tablets could smoothly disperse and pass through a no.2 sieve within 1 min.

以低取代羟丙基纤维素、羟丙甲纤维素等为辅料研制该分散片，紫外分光光度法测定该片中苯巴比妥的含量，测定波长为240 nm。结果：分散均匀性试验表明该分散片在1 min内均匀分散并通过2号筛。

Mercury thiocyanate spectrophotometry is used in determination of hydrochloride in air.

硫氰酸汞分光光度法测定空气中氯化氢，方法试剂空白不稳定，控制显色温度和硫氰酸汞—乙醇溶液的制备是降低并稳定试剂空白的关键所在。

The low concentration of chlorine dioxide in water was determined by spectrophotometry according to the characteristic of decoloration of thymol blue by using chlorine dioxide as oxidant in this paper.

根据二氧化氯可氧化百里香酚兰使其褪色的特性，可用示差分光光度法测定水中低浓度二氧化氯的含量。

Methods After extracting the samples, the reaction between thymol and nitrate produced nitrothymol in the presence of sulphuric acid; then nitrothymol was made to react with sodium hydroxide; determination was made on the concentration of nitrate by spectrophotometry at 412 nm.

样品经提取，其中的硝酸盐在硫酸酸性条件下，与麝香草酚生成硝基化合物，再与氢氧化钠作用，生成黄色化合物，在波长412nm处用分光光度法测定食品中硝酸盐含量。

This paper deals with the best experimebtal condition of the determinationof the hardness of water by spectrophotometry with Methyl Thymol Blue Complexon as chlorophosphosphonsazo, and the concrete formula of Lambert-Beer's Law inthe mixed system of Ca-MTB is calculated.

研究了以甲基百里香酚兰络合剂为显色剂，用分光光度法测定水硬度的最佳试验条件，导出了朗伯─比尔定律在Ca—MTB与Mg—MTB二元混合体系中的具体形式。

In this dissertation, firstly, the conditions of isolation and purification of specific toxin fractions produced by Exserohilum turcicum has been studied, and a high-efficient method has been established;secondly, the toxins were analysed by UV-Vis spectrophotometry;then the effect of specific toxin on death rate of corn leaves protoplast was studied by FDA as a tinct reagent;finally, using ANS as a probe and SDS-PAGE to study the membrane protein of the corn leaves with Htl gene. In a word, the aim of the research is to search some existent evidences of the toxin binding site on protoplasmic membrane, and provide proofs for nosogenesis of specific toxin in terms of cytology and the molecular biology.

本研究对玉米大斑病菌1号小种毒素的特异性组分进行分离，建立了高效的特异性毒素分离纯化方法，并对其进行了紫外波谱分析；用荧光素双醋酸酯染色法，测定了毒素特异性组分对原生质体死亡率的影响；进而用1-苯胺基-8-萘磺酸荧光探针标记法和SDS-PAGE电泳法对特异性毒素组分与Htl基因玉米细胞互作过程中的质膜蛋白进行了研究，旨在证明Htl基因玉米细胞质膜上存在特异性毒素组分结合蛋白，为从细胞和分子生物学角度阐明毒素的致病机理提供证据。

Nevertheless, the more classical methods based on titrimetry, colorimetry, spectrophotometry, single or multiple partitions, or changes in physical constants lose none of their previous validities.

但无论怎样，以滴定法、比色法、分光光度法基础的比较经典的方法，单个或多个分类、或物理常数方面的改变（或任何其他形式的检测或分析），并未失去它们原有的有效性。

Preliminary study of the modification mechanism thermal stability of the membrane was performed by using fourier transform infrared spectrophotometry-attenuated total reflectance and differential scanning calorimetry.

研究硼酸对丝胶／聚乙烯醇膜材料的力学性能和耐溶失性能的影响，利用红外光谱分析和差示扫描量热分析研究硼酸对材料的改性机制和热稳定性。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。