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The experimental conditions for measurement on the content of aluminium, calcium, magnesium, manganese, phosphor, silicon and titanium using ICP-AES method according to GB/T6730.63—2006 have been tested and analyzed. In the experiments the iron ore sample is decomposed and extracted using sodium carbonate/sodium tetraborate with proper acidity as the flux and then a working curve is drawn up using extremely pure ferric oxide (F2O3) as the primitive. And in the end the correlation coefficient r attains to 0.999 and above.

试验ICP-AES法测定铁矿石中铝、钙、镁、锰、磷、硅和钛国家标准方法GB/T6730.63-2006的实验条件,用碳酸钠/四硼酸钠作熔剂分解铁矿石样品,适当的酸度浸取,以高纯三氧化二铁打底作工作曲线,相关系数r达0.999以上。

The effects of surfactant sodium dodecylbenzene sulfonate on 24-D adsorption in the soil were determined in laboratory studies.

研究了不同浓度的表面活性剂十二烷基苯磺酸钠对 2 4 D在土壤中吸附的影响。

Now they possess twenty more series of product including glycyrrhizic acid, ammonium salt, sylvite, sodium salt, glycyrrhetinic acid, derivatives of the glycyrrhetinic acid etc. which are chiefly applied to the pharmaceuticals, food, cosmetic and tobacco industry as material, intermediate, synergistic agent and additive.

现拥有以甘草酸及铵盐、钾盐、钠盐,以及甘草次酸和甘草次酸的各种衍生物等二十多种系列产品,主要用于医药、食品、化妆品、烟草等行业的原料、中间体、增效剂和添加剂。

A new compound of merocyanine dye based on fullerene unit (2) was designed, synthesized and characterized by MALDI-TOF, FT-IR, NMR and UV-vis spectra and the allochroic processes were also studied.

并对化合物 2的变色过程进行了研究,发现该化合物对极性溶剂如甲醇、N ,N 二甲基甲酰胺和酸或碱如乙酸、乙醇钠等具有良好的变色过程。

Compound 2 had allochroic processes in polar solvents such as methanol or DMF. Acids or alkali such as acetic acid or NaOC_2H_5 also showed apparent influence on the allochroic process.

并对化合物2的变色过程进行了研究,发现该化合物对极性溶剂如甲醇、N,N-二甲基甲酰胺和酸或碱如乙酸、乙醇钠等具有良好的变色过程。

The effect of carboxy methyl cellulose, high ester pectin and propy leneglucolalginate were significant, and we experienced the synergic effect of them by positive cross assay.

增稠剂羧甲基纤维素钠、高酯果胶及藻酸丙二醇酯能够显著提高调酸果奶的稳定性,并通过正交试验进行增稠剂的复配。

The effect of carboxy methyl cellulose, high ester pectin and propy leneglucolalginate were significant, and we experienced the synergic effect of them by positive cross assay.

增 稠剂羧甲基纤维素钠、高酯果胶及藻酸丙二醇酯能够显著提高调酸果奶的稳定性,并通过正交试验进行增稠剂的复配。

The sodium dihydroxy phosphate solution was added 0.4% triethylamine and adjusted its pH to 6.0 by adding 20% phosphate acid. The electrodes potential were set at 300mV, 400mV, 550mV and 650mV.

液相色谱的流动相为30mmol/L磷酸二氢钠水溶液:甲醇=90:10(其中水溶液中加入0.4%三乙胺,并用20%磷酸调pH至6.0);四组电极的检测电势分别为300mV、400mV、550mV和650mV。

By experiment we found that the reaction of aldehydes and nitromethane can proceed smoothly in the presence of a catalytic amount of Disodium Binaphtholate (3 mol %),and obtain a corresponding rate of product up to 100%.

通过筛选,我们发现在催化剂量的联二萘酚双钠盐(3 mol%)存在下,henry反应能够快速的进行,产率高达100%。

Spectrophotometric determination of ozone in indoor air by using indigo disulphonate was investigated.

建立了快速简便、灵敏的测定室内空气中臭氧的方法--靛蓝二磺酸钠分光光度法。

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