查询词典 titrations

Nevertheless, its fluorescence is enoughintense to be investigated the switch properties in aqueous solution. 5. The results of fluorimetric titrations and spectrophotometric titrations indicate that,for 〓 and 〓, fluorescence of fluorenyl was quenched by transfer of electron from metalcenter to photoexcited state of fluorenyl during coordination of Cu or Ni.

在酸性条件下，未配位的〓和〓都有荧光，在中性及弱碱性条件下与金属铜、镍离子配位后，发生光诱导电子转移，电子由金属离子中心转移至激发态的芴基而使其荧光猝灭。

The difference of the data obtained by polarimetry and acid-base titrations was not significant.

旋光度法简便、快速、准确，可用于盐酸麻黄碱滴鼻液的含量测定。

Methods Ephedrine hydrochloride nasal drops was quantified by polarimetry and acid-base titrations. The data were analyzed by t-test.

分别用旋光度法与酸碱滴定法测定盐酸麻黄碱滴鼻液的含量，并将其结果进行比较。

Methods Ephedrine hydrochloride nasal drops was quantified by polarimetry and acid-base titrations.

分别用旋光度法与酸碱滴定法测定盐酸麻黄碱滴鼻液的含量，并将其结果进行比较。

Objective To determinate the content of ephedrine hydrochloride nasal drops by polarimetry instead of acid-base titrations.

；！AaY M0 目的用旋光度法替代酸碱滴定法测定盐酸麻黄碱滴鼻液的含量。

This experiment will introduce you to quantitative volumetric analysis and potentiometric titrations.

这个实验将会向你介绍定量容量分析法和电位滴定法

Key words］ Chlorphenamine Maleate; Nonaqueous Titrations; Microtitration

关键词］马来酸氯苯那敏；非水滴定；微型滴定

A standardized base solution is prepared and then potentiometric titrations are performed.

学生先要准备一个已标定的醶液，接着进行电位滴定。

A standardized base solution is prepared and then potentiometric titrations are performed.

学生先要准备一个已标定的醶液，接著进行电位滴定。

Methods Anhydrous acetic acid as solvent, 0.1 mol/L perchloric acid as titrant, crystal violet solution as indicator to establish non-aqueous titrations and ODS column as stationary phase, methanol and a mixture of 0.025 mol/L sodium phosphate monobasic and 0.02 mol/L sodium dedecyl sulfate (80:20) adjusted with phosphoric acid to a pH (4.8±0.1J as mobile phase, 220 nm as detective wavelength to establish HPLC-UV method for determination of piperazinylethylestrone drug substance; FMOC-CL as a derivatization reagent, FD as a detector to establish an HPLC method with derivatization and column switching for determination of piperazinylethylestrone in dog plasma.

分别采用无水冰醋酸为溶剂，0.1mol/L高氯酸为滴定液，结晶紫指示液指示终点的非水滴定法和HPLC-UV法测定哌嗪雌酚酮原料药含量；以FMOC-CL为衍生化试剂，采用柱切换柱前衍生化萤光检测的HPLC法测定狗血浆中哌嗪雌酚酮含量。

And when he saw a fig tree in the way, he came to it, and found nothing thereon, but leaves only, and said unto it, Let no fruit grow on thee henceforward for ever.

21：19 看见路旁有一棵无花果树，就走到跟前，在树上找不着什么，不过有叶子。就对树说，从今以后，你永不结果子。

In terms of the occurrence form, the gold deposits of southwest Guizhou fall into three types of in-terlayer, fracture and laterite.

黔西南地区的金矿床按产出形态可分为层间型、断裂型和土型三种类型。