吸光度

Methods: Based on the value added and the absorbance of the sample in the beer into lead series solution, increasing the absorbance values, enhance the sensitivity of the method, the direct determination of lead content in beer was performed.

依据吸光度值的加和性，在啤酒样品中加入铅标准系列溶液，增大吸光度值，提高方法的灵敏度，直接测定啤酒中铅含量。

The paper indicated the remarkable effects on health caring liquor, which was made from Cynomorium songaricum cleared by clarifying agent s, and combined kieselguhr and gelatin and PVPP.

以锁阳为原料采用硅藻土、明胶和PVPP复合澄清处理配制的保健酒，在204nm处吸光度衡量有效物质含量，520nm处吸光度测定色度，880nm处透光率测定澄清度，结果发现各澄清剂对澄清度、有效物质及稳定性的作用显著，其中明胶与PVPP、硅藻土与明胶复合对稳定性有明显提高，其中明胶1g/L+PVPP1g/L为最佳组合。

It is reported in this paper that diphenylcarbazone reacts with Hg in pH 2.2 in the presence of Tween─60 to form a purple complex with its absorption maximum at 486 nm. The existence of chloride will depress the absorption of the complex. The negative absorption will be proportional to the consistence of chloride.

摘要﹞ 在pH为2.2的酸性介质中，在吐温－60溶液的存在下，Hg与二苯卡巴形成紫色的配合物，其最大吸收波长为486 nm，氯离子的存在可使原紫色配合物吸光度降低，其负吸光度与氯离子浓度成正比。

This paper is aimed to determine evaluation method of photometric precision and investigate its effect on analytical precision by simulated spectra.

研究了该类型仪器的吸光度重复性的评价方法，并采用模拟光谱法考察了吸光度重复性对测试结果重复性的影响。

In this paper,the principle of a new absorbance ratio derivative method was described.The experimental methods of derivation with subtraction technique on ordinary spectrophotometer and simultaneous determination of phenol and resorcin were studied.The result is satisfying.

本文叙述了吸光度比值－导数光谱新方法的原理，研究了在普通分光光度计上用计算法完成吸光度比值导数运算、同时测定苯酚和间苯二酚含量的实验方法，取得了较为满意的结果。

Experimental result showed that under the wavelength of 460 nm,there was good linear relation between absorbency and content of SO42-;and stationary time that absorbency value needed became longer along with the increase of sample quantity of phosphoric acid.When absorbency become stationary,there is good linear relation between the phosphoric acid sample quantity and the content ofSO42-.So the content of SO42- can be adjusted by turning the sample quantity to make it in scope of standard curve.

实验结果表明，在波长为460 nm处，硫酸根含量与吸光度成良好的线性关系；随着磷酸取样量的增加，吸光度达到稳定值所需的时间相应增加，稳定后磷酸取样量与硫酸根含量成良好线性关系，因此实验过程中可通过调整磷酸的取样量来调节硫酸根含量，使之在标准曲线的测定范围内。

The relationship among stray light,absorbance error and absorbance true value for UVVISS was discussed in this paper.

本文研究了紫外可见分光光度计UVVISS的杂散光S.L.Strary Light与吸光度误差和吸光度真值之间的关系导出了S.L。

The relationship among stray light,absorbance error and absorbance true value for UV/VISS was discussed in this paper.

本文研究了紫外可见分光光度计的杂散光 S.L。与吸光度误差和吸光度真值之间的关系；导出了S.L。

The relationships between absorbance error and absorbance true value for 14 stray light values were further calculated,and the 12 correspording curves were drawn.

下，吸光度误差与吸光度真值的关系，并绘制了12条误差曲线同时对如何使用计算公式和有关的误差曲线、如何控制和选择UVVISS的S.L。

With the same zirconium concentration,the absorbance of zirconyl oxyhalide solution (λ=664nm)prepared in HCl was larger than that from pure zirconyl oxyhalide solution.

发现对于相同锆浓度的溶液，高酸度的锆贮备溶液中的锆与偶氮胂Ⅲ形成的化合物的吸光度(λ=664nm)要大干仅由氧氯化锆配制的锆贮备溶液中的锆与偶氮胂Ⅲ形成的化合物的吸光度。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。