这种被称为再羟基化年代测定法的技术，最近才由曼彻斯特大学和爱丁堡大学的研究员开发出来。
Called rehydroxylation dating, the technique was recently developed by researchers at the University of Manchester and the University of Edinburgh.
同时测定了炭黑表面羧基、酚羟基、内酯基等酸性含氧基团的含量。
The contents of carboxyl, phenol hydroxyl, and lactones groups on carbon black surface have been determined.
研究了2-羟基-5-磺酸苯基重氮氨基偶氮苯（HSDAA）与镉的反应，建立了直接测定铝合金中镉的光度分析方法。
The reaction of 2-hydroxy-5-sulfophenyl-diazoaminoazobenzene (HSDAA) with cadmium was studied to establish the direct photometric determination of cadmium in aluminum alloy.
采用铝-8 -羟基喹啉-5 -磺酸-CTMAB胶束增敏体系，用荧光法测定了食用粉条中微量铝的含量。
This paper studied the determination of Aluminium in vermicelli by fluorimetry based on the micellar enhancement system of Aluminium with 8 Hydroxyquinoline 5 Sulphonic acid and CTMAB.
研究了新显色剂2 ，4 二羟基苯甲醛缩氨基硫脲（DBT ）与铜的显色反应，建立了光度法测定微量铜的新方法。
A new method for the spectrophotometric determination of trace copper with 2,4 dihydroxybenzaldehyde thiosemicarbazone(DBT) is reported in this paper.
在此色谱条件下对不同浓缩条件下羟基红花黄色素a (HSYA)进行测定，比较其含量高低。
In this chromatographic conditions under different concentration HSYA a (HSYA) were measured to compare the level of its content.
在理化性质测定方面，将葛根素分子结构中的4’-酚羟基进行酰化后其理化性质发生了一定的变化。
When we acylated the 4'-phenolic hydroxyl group in the molecular structure of puerarin, the derivatives'physico-chemical properties had some changes.
通过苯酚-硫酸法、间羟基联苯法、高效凝胶渗透色谱法、容量分析法、红外及紫外光谱等手段对MCP-1、MCP-2进行分析测定。
MCP-1 and MCP-2 were analyzed and determined by phenol-sulfuric acid, m-hydroxyldiphenyl, volumetry, HPGPC, agarose gel electrophoresis, IR and UVmethods.
本工作对两种常见的商品紫外吸收剂——2-羟基-4-甲氧基二苯甲酮（UV-9）和2.4-二羟基二苯甲酮（UV-0）在基态和激发态时的离解常数进行了测定。
In this paper the pK values of both commonly commercial UV-absorbers-2- hydroxy-4-methoxy-benzophenone (UV-9) and 2,4-dihydroxy-benzophenone (UV-0) at ground and excited states have been determined.
本文对不同采样点人尿中的1- 羟基芘含量和受试人携带的个体空气采样器中以及所在环境中固定采样器中多环芳烃的浓度进行了测定。
The relation of 1-hydroxypyrene in urine with ambient PAHs was investigated with several groups of volunteers carrying personal air samplers and stationary samplers.
用重结晶方法得到了羟基乙叉二膦酸的单晶，通过单晶x -射线衍射技术测定了晶体的结构，并用红外光谱和核磁共振波谱对其进行了表征。
The single crystal of HEDP was obtained through recrystallization method, which was characterized by single crystal X-ray diffraction technique, infrared and NMR spectroscopy.
目的：建立积雪苷片中积雪草苷和羟基积雪草苷含量的测定方法。
Objective:To establish a method for determining the contents of siaticoside and madecassoside in Jixuegan tablet.
测定了降解途径中相关酶的活性，表明对氯苯胺经过苯胺双加氧酶初始氧化和羟基化后，芳环的裂解是由邻苯二酚2 ，3双加氧酶催化。
Enzymatic analysis show that initial reactions ofp-chloroaniline degradation by Diaphorobacter sp. PCA039 are catalyzed by aniline dioxygenase and chlorocatechol 2,3-dioxygenase.
测定了降解途径中相关酶的活性，表明对氯苯胺经过苯胺双加氧酶初始氧化和羟基化后，芳环的裂解是由邻苯二酚2 ，3双加氧酶催化。
Enzymatic analysis show that initial reactions ofp-chloroaniline degradation by Diaphorobacter sp. PCA039 are catalyzed by aniline dioxygenase and chlorocatechol 2,3-dioxygenase.
应用推荐