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

本文報導(dǎo)了一個靈敏的固體相光度法測定清涼飮料中微量檸檬黃的新方法。

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

bstract 本文報導(dǎo)了一個靈敏的固體相光度法測定清涼飮料中微量檸檬黃的新方法国产Aⅴ一区二区三区四区。

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.

以低取代羥丙基纖維素、羥丙甲纖維素等為輔料研制該分散片，紫外分光光度法測定該片中苯巴比妥的含量久久毛片免费视频，測定波長為240 nm。結(jié)果：分散均勻性試驗表明該分散片在1 min內(nèi)均勻分散并通過2號篩亚洲午夜无码久久yy8090。

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

硫氰酸汞分光光度法測定空氣中氯化氫欧美在线免费A片，方法試劑空白不穩(wěn)定，控制顯色溫度和硫氰酸汞—乙醇溶液的制備是降低并穩(wěn)定試劑空白的關(guān)鍵所在亚洲中文人妻。

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.

根據(jù)二氧化氯可氧化百里香酚蘭使其褪色的特性800AV凹凸视频免费观看网，可用示差分光光度法測定水中低濃度二氧化氯的含量国产系列熟女丝袜喷水。

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.

樣品經(jīng)提取，其中的硝酸鹽在硫酸酸性條件下国产亚洲日韩在线视频，與麝香草酚生成硝基化合物www.欧美.com，再與氫氧化鈉作用，生成黃色化合物人妻在线黄色视频，在波長412nm處用分光光度法測定食品中硝酸鹽含量性爱午夜视频。

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蘭絡(luò)合劑為顯色劑，用分光光度法測定水硬度的最佳試驗條件人人曰人人操曰，導(dǎo)出了朗伯─比爾定律在Ca—MTB與Mg—MTB二元混合體系中的具體形式在线免费播放你懂的。

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.

本研究對玉米大斑病菌1號小種毒素的特異性組分進(jìn)行分離，建立了高效的特異性毒素分離純化方法欧美牲交@欧美牲，并對其進(jìn)行了紫外波譜分析操操操人人人；用熒光素雙醋酸酯染色法，測定了毒素特異性組分對原生質(zhì)體死亡率的影響嗯好深啊用力哦嗯水好多视频；進(jìn)而用1-苯胺基-8-萘磺酸熒光探針標(biāo)記法和SDS-PAGE電泳法對特異性毒素組分與Htl基因玉米細(xì)胞互作過程中的質(zhì)膜蛋白進(jìn)行了研究国产无码Av动漫在线观看，旨在證明Htl基因玉米細(xì)胞質(zhì)膜上存在特異性毒素組分結(jié)合蛋白，為從細(xì)胞和分子生物學(xué)角度闡明毒素的致病機(jī)理提供證據(jù)欧美一级片专区。

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.

但無論怎樣国模逼，以滴定法、比色法黄18禁免费网站、分光光度法基礎(chǔ)的比較經(jīng)典的方法亚洲综合卡通动漫第三页，單個或多個分類、或物理常數(shù)方面的改變（或任何其他形式的檢測或分析）日本免费黄色网址在线看1，并未失去它們原有的有效性欧美一级大黄zzoo。

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.

研究硼酸對絲膠／聚乙烯醇膜材料的力學(xué)性能和耐溶失性能的影響，利用紅外光譜分析和差示掃描量熱分析研究硼酸對材料的改性機(jī)制和熱穩(wěn)定性直接看av网址。