浓度测定

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。

Objective:To determine flourouracil concentration in serum,peritoneal fluid and rectum tissue by high performance liquid chromatography.

目的：建立测定血液、盆腔液和直肠组织中氟尿嘧啶浓度的高效液相色谱方法。

Measure by titration; of the volume or concentration of solutions.

通过测量密度来测定盐溶液的浓度的液体比重计。

Titrimetry is a quantitative method using solution chemistry to determine the concentration of analyte.

滴定法是利用溶液化学来测定分析物浓度的定量分析方法。

The enthalpies of solution and the thermodynamics of styphnic acid 2,4,6-trinitroresorcinol the solution solved in DMF were studied.The enthalpies of TNR solution with different concentrations were measured by a SETARAM C80Ⅱcalorimeter at 298.15 K and the empirical formula for enthalpies of TNR solution is calculated by polynomial simulation on the computer.

应用微热量热仪测定了斯蒂芬酸在溶剂N，N-二甲基甲酰胺中不同浓度时的溶解焓，用计算机拟合的方法求得计算该物质溶解焓的经验公式(ΔsolH=-14.392-988.6b+34.992b1/2)。

Methods Seven probe drugs were incubated with or without methyl protodioscin respectively in human microsomes. The specific substrates used in this study were caffeine (CYP1A2), dextromethorphan (CYP2D6), tolbutamide (CYP2C9),-mephenytoin (CYP2C19), chlorzoxazone (CYP2E1), coumarin (CYP2A6) and midazolam (CYP3A4). The concentrations of the substrate metabolites (paraxanthine, dextrorphan, 4-hydroxytolbutamide, 4-hydroxymephenytoin, 6-hydroxychlor-zoxazone, 7-hydroxycoumarin and 1-hydroxymidazolam) were determined by HPLC and LC-MS/MS. Results MPD 1-10 μmolL^(-1 had no significant inhibition on the activities of the seven cytochrome P450 enzymes.

将MPD和CYP450酶7种亚型的特异性探针底物咖啡因(CYP1A2)、右美沙芬(CYP2D6)、甲苯磺丁脲(CYP2C9)、s-美芬妥因(CYP2C19)、氯唑沙宗(CYP2E1)、香豆素(CYP2A6)及咪达唑仑(CYP3A4)与人肝微粒体进行孵化反应，采用HPLC和LC-MS/MS法测定对应的7种代谢产物（1，7-二甲基黄嘌呤、去甲右美沙芬、4-羟基甲苯磺丁脲、4-羟基美芬妥因、6-羟基氯唑沙宗、7-羟基香豆素和1-羟基咪达唑仑）的浓度，通过与对照组比较，确定MPD对以上7种酶活性的影响。

A new method of quantitative determination for serum albumin in aqueous solution has been developed by measuring total internal reflection synchronous fluorescence at the solid/liquid interface.

中文文摘］应用全内反射与同步荧光相结合的技术，建立了利用蛋白质吸附在液-固界面上的同步荧光信号来测定本体蛋白质溶液浓度的新方法。

Methods Cassia Seed was soaked in chromium trichloride aqueous solution of different concentration （from 0 to 3600 mg/L） at 37℃ for 12 hours.

方法用不同浓度的三氯化铬水溶液，37℃浸泡决明子过夜，收获浸泡后的决明子，作为0h时间点的样品，然后分别收获24、48、72、96h的决明子芽，用石墨炉原子吸收分光光度法测定铬含量。

The results indicated that the method had high sensitivity and was very useful to determine the trimethylamine in gas phase.

用pH为1的硫酸吸收液吸收含三甲胺的气体，采用离子色谱仪测定吸收液中TMA浓度。

Plasma fibrinogen and serum K+ and concentration were measured with therncoprepilatic turbidimetry automtic biochemical analysis apparatus in 23 norotensive controls and 53 patients with essential hypertension before and after ks of treatment with Diovan.

采用热浸淀比浊法和全自动生化分析仪分别测定23例正常人和53例高血压病患者代文治疗前和治疗12周后的血浆Fbg和血清钾浓度。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！