分光光度法

Methods A series of improved experiments on barium chromate spectrophotometry without heating and the experiments of precision and accuracy,as well as comparison of experimental data between the improved method and the National Standard Method were carried out.

方法采用不加热方法，对铬酸钡分光光度法进行一系列改进实验，并进行了精密度及准确度试验，与国家标准方法的测定结果进行了比较实验。

Solubility of barium chloride and barium oxide in hydrochloric acid, ethanol,acetone,ether and hydrochloric acid- ethanol,hydrochloric acid- acetone,hydrochlo- ric acid- ether has beeen studied and the separation of Ba O from Ba Cl\- 2 with hydrochloric acidethanol as the solvent has been proposed.

研究了氯化钡和氧化钡在盐酸、乙醇、丙酮、乙醚及盐酸-乙醇、盐酸-丙酮、盐酸-乙醚中的溶解性，提出以盐酸-乙醇为溶剂进行两者的分离。以 DBC- CPA为显色剂分光光度法测定氧化钡的含量，加料回收率为 98%～ 10 2 %，氧化钡含量为 0 。32 %时，平行测定 7次，相对标准偏差为 1。 58%。该法适于快速测定热处理盐浴中氧化钡的含量，对监控盐浴品质有指导意义

With a high accuracy, the biuret in compound fertilizer is determined from the color reaction between biuret and copper by copper double salt spectrophotometry, meanwhile the remove of PO43-,Ca2+, Mg2+and NH3 interferences is described without other and new interfering matters.

利用缩二脲铜的色泽反应，采用铜复盐分光光度法测定复合肥中的缩二脲，并介绍除去PO43-，Ca2+，Mg2+，NH3干扰的方法，并且在此过程中不能引入新的干扰物质。该方法精密度较好。

METHODS:The measurment procedure was carried out using pH 8 phosphate salt buffer as solvent.Phenol red was determined by dual wavelength spectrophotometry at 558 nm and 570 nm. Tinidazole was determined by multiple regression spectrophotometry at 290,300,318 nm and 340 nm.

以pH 8磷酸盐缓冲液为溶剂，采用双波长法在558 nm和570 nm测定酚红，以多元回归分光光度法在290，300，318，340 nm测定替硝唑。

AITC content of pungent products was determined by ultraviolet spectrophotometry, and compared with sensory evaluation. Results suggested that AITC content of pungent products was positively corelated to score of sensory evaluation of pungent degree.

然后选用紫外分光光度法对辛辣风味制品的AITC含量进行测定，同时探讨其与感官评价粗略定量之间的关系，结果表明辛辣程度感官评分与AITC含量呈正相关关系。

Methods Atomic absorption spectrometry was applied to determine the lead content in the air and dust in the main trunk roads around the primary schools in that region.

采用原子吸收分光光度法，对该区小学内及周围交通干道空气和尘土中的铅含量进行测定。

Methods The measurement of atom-absorbent spectrophotometry and Conners gradet of 100 children with ADHD and 100 normal children.

用原子吸收分光光度法和Conners多动症评分量表分别对儿童多动症组和对照组患儿进行血铅和评分量表测定。

MethodsThe content of total saponins in Fructus Corni determined by UV-spectrophoto-metry with a detection wavelength at 554 nm.

方法采用紫外可见分光光度法测定总皂苷含量，检测波长为554 nm。

Adsorption behavior of Diamyl phthalate by sediment of Yellow River was discussed by solid phase extraction, high performance liquid chromatography and UV spectrophotometry method.

利用固相萃取-高效液相色谱和紫外分光光度法讨论黄河兰州段沉积物对水体中邻苯二甲酸正二戊酯的吸附行为及各种因素如温度、离子强度、pH值和有机物含量对其吸附行为影响。

A diazo coupled spectrophotometry for the determination of nitrite was reported in this work. Some experimental conditions were studied.

建立了邻甲氧基苯酚重氮偶联分光光度法测定水基切削液及机械加工废水中亚硝酸盐的方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。