To determine the condition of chromogenic reaction between iodine and amylum quantitatively, the author studied the law in the course of chromogenic reaction between iodine and amylum with the aid of spectrophotometer quantitatively, and found that maximum absorption wavelength is 610 nm, and the absorbance in the course of chromogenic reaction between iodine and amylum has not changed within 7 hours.

為了確定碘和淀粉反應(yīng)的定量關(guān)系午夜操B，本文利用分光光度計(jì)定量地研究了碘和淀粉顯色反應(yīng)過程中吸光度的變化規(guī)律亚洲激情图片小说，發(fā)現(xiàn)碘和淀粉顯色反應(yīng)的最大吸收波長(zhǎng)為610 nm人人操人人人，碘和淀粉顯色反應(yīng)的吸光度在七小時(shí)內(nèi)基本不變，可以進(jìn)行比色分析色久资源视频。

A sensitive spectrophotometric method for the determination of trace amounts of chlorine dioxide based on the fading reaction of chlorophenol red by chlorine dioxide has been developed in the alkaline solution.

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After washed, the chromogen substrate was added and incubated for 30 minutes in the dark. Rinsed with distilled water, purple spots were observed and counted using a dissection microscope. The number of spots means the level of cytokine producted by sCTL. Analysis of ability of specific cytotoxic lymphocytes to lyse target cells: CytoTox96 Non-Radioactive Cytotoxicity Assay kit was used.

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Take a sulfosalicylic acid mole fraction as the abscissa, the extinction is the y-coordinate, makes the extinction constitutional diagram.

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And in the present of denaturant, the absorption increased significantly.

酶溶液在280 nm處只有微弱的吸光度，而在210 nm附近有很高的吸光度无码人妻精品一区二区不卡。

Among the four paper formation assessment methods, i.e., coefficient of variation, varience (S^2), M/K formation index, and modified all-pairs score, the COV and look-through judgements are most affected by mean light absorbance. Under similar mean light absorbance renditions, all four methods gave similar results.

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The invention discloses a method for measuring seawater chemical oxygen demand by photometry, wherein the seawater exemplar is first pre-processed, then using the basic potassium hypermanganate as reaction system, the potassium permanganate is deacidized quantitatively by organics to produce manganate, using pure water or margin solution as reference ratio, measuring the absorbance an of the manganate at its maximum absorbing wave length 430 nm, drafting the A-COD value operating curve, obtaining the concentration of the organics in the water, i.e.

本發(fā)明公開了一種對(duì)海水化學(xué)需氧量進(jìn)行測(cè)定的光度測(cè)定法外国性交网，該方法首先將海水樣品進(jìn)行預(yù)處理超碰AV在线一区，再以堿性高錳酸鉀為反應(yīng)體系，這樣海水中的有機(jī)物在強(qiáng)堿性介質(zhì)中與過量的高錳酸鉀迅速反應(yīng)亚洲色欲天天天堂色欲网91，高錳酸鉀被有機(jī)物定量還原后生成錳酸鹽台湾一级婬片A片AAA毛片在线，以純水或空白溶液作參比，在錳酸鹽的最大吸收波長(zhǎng)430nm處測(cè)其吸光度A欧美一级A片免弗看，該吸光度A與海水樣品中的有機(jī)物的含量具有正相關(guān)關(guān)系一级黄色视频无码。

By synthetically analysizing the physical and chemical properties of all components and particle size, the content of F2641 in the JOB-iC is determined by gravimetric analysis after F2641 is seperated from HMX,TATB and PNP through ? alkali reflux. Determination conditions is set as follows the sample is boilingly refluxed for six hour in a constant temperature bath after adding lOOm! 8.0 ?? 0.1% NaOH. The solvent DMF saturated by TATB is used for extracting HMX,F21 and PNP from the sample and TATB is seperated by crucible filter G4. The mass precent of TATB is determined by extraction fractionation. The mass percent of PNP is measured by multiwavlength linear regression ultraviolet spectrophotometry. The testing conditions are set as follows:multiwavlength constitution: X=267nxn, 275nm, 283nm, 29mm, 299nm,the application scope of the Lambert-Beer law: the concentration of PNP is O.005?0.O25mgIml, the concentration of HMX is 0.060.3Omg/ml,absorption coefficents of PNP and HMX are solved by the slope of linear regression curve of absorbency- concentration of standard solution of PNP and HMIX for measuring wavelengthes,on the basis of the Lanibert-Beer law and absorbancy additivity principle, the slope of linear regression curve of A/E(1) and E1 of PNP and HMX solution is regarded as the concentration of PNP in the solution.

根據(jù)傳爆藥中各組分的物理、化學(xué)性質(zhì)及主體炸藥的粒度大小jizz污污视频免费看，進(jìn)行綜合分析免费看操，確定了采用堿回流重量法測(cè)定JOB-1C 中F_(2641)的含量，測(cè)定條件：加入100ml濃度為8.0±0.1％的氫氧化鈉激情小说在线视频观看，在恒溫水浴中煮沸回流6h欧美操大黑逼片；采用溶劑萃取法測(cè)定JOB-1C中TATB的含量，選擇TATB飽和的二甲基甲酰胺為萃取溶劑三级专区，用G4坩堝式過慮器進(jìn)行萃取分離黄色www网在线；采用多波長(zhǎng)線性回歸紫外分光光度法測(cè)定JOB-1C中PNP的含量，通過實(shí)驗(yàn)確定了多波長(zhǎng)組合：λ=267nm精品大学生视频在线观看，275nm欧美一级特大黄片，283nm，291nm我想看农村妇女一级毛片，299nm直接免费看黄的网站；朗波—比耳定律的適用范圍為PNP濃度：0.005～0.025mg/ml，HMX濃度：0.06～0.30mg/ml美女18禁止黄的网站；在測(cè)定波長(zhǎng)下农村人性爱一区二区，對(duì)PNP、HMX標(biāo)準(zhǔn)溶液的吸光度—濃度進(jìn)行線性回歸一块操最新网址在线观看，由回歸曲線的斜率得出PNP在线国产91小视频、HMX的吸收系數(shù)；根據(jù)朗波—比耳定律和吸光度加和性原理国产高清自拍高清，在測(cè)定波長(zhǎng)下人人摸,人人操，對(duì)PNP、HMX 兩組分混合溶液A_i/E_HMX(i與E_PNP(i/E_HMX(i進(jìn)行線性回歸你懂的在线观看视频网站，回歸曲線的斜率即為混合溶液中PNP的濃度播播影院私人影院性播影院。

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.

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On the bases of heating up amethyst, smoky quartz and yellow quartz; observing the change of their color; determining their absorbency and drawing the absorbency curve in different temperature and on the bases of the results of atomic absorption spectrometry, we discussed the stability of the color centers in quartz crystal.

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extinction coefficient：吸光度

消光角 extinction angle | 吸光度 extinction coefficient | 滅火器 extinguisher

OD optical density：吸光度

mol mole摩爾 | OD optical density吸光度 | pH hydrogen ion concentration氫離子濃度

uncorrected absorbance：未校正吸光度

"不可控因素","uncontrollable factor" | "未校正吸光度","uncorrected absorbance" | "未校正滯留體積","uncorrected retention volume"

absorbency index：吸光系數(shù)

absorbefacient | 吸收性的 吸收劑 | absorbency index | 吸光系數(shù) | absorbency | 吸收性, 吸光度 吸收性,吸收能力,吸光率(度)

absorbance：吸光度

所以才會(huì)有吸光度(ABSORBANCE),吸光度(reflectance),和透射度(transmittance)的原理. 而且當(dāng)白光被反射時(shí),它會(huì)議被反射和被吸收的波(WAVELENGHT)來呈現(xiàn)那物體的顏色. 基本上就是光子和核子相撞,才會(huì)反射的啦!

absorbance ratio：吸光度比值

吸光度||absorbance | 吸光度比值||absorbance ratio | 吸光系數(shù)||specific absorbance

absorbance ratio：吸光度比值 吸光度比值

absorbance 吸光度 吸光度 | absorbance ratio 吸光度比值 吸光度比值 | absorbance ratio method, pH indicator pH指示劑吸光度比值測(cè)定法 pH指示劑吸光度比值測(cè)定法

absorbance index：吸光度指數(shù)

absorbance 吸收率;吸光度 | absorbance index 吸光度指數(shù) | absorbancy 吸光度;吸收率

absorbance index：吸光指數(shù)

吸收性 absorbability | 吸光指數(shù) absorbance index | 吸光度 absorbance; absorbancy; absorbency

specific absorbance：吸光系數(shù)

吸光度比值||absorbance ratio | 吸光系數(shù)||specific absorbance | 吸入||inhalation