沉淀剂

The effect of inoculating crystal and additive on particle size and bulk density of CeO2 was studied.

用碳酸氢铵作沉淀剂制备大颗粒CeO2，研究了晶种和添加剂对CeO2产品的粒度和松装密度的影响，适量加入晶种和添加剂可以促进CeO2颗粒的长大。

The results showed that the best luminescence material NaYF4: Tm(superscript 3+), Yb(superscript 3+) can be obtained by selecting H2C2O4 as precipitator. The siring at 600℃ for 5h.

研究结果表明，采用H2C2O4为沉淀剂制成草酸盐前躯体，然后在600℃下煅烧5h，即可得到发光效果较好的NaYF4：Tm(上标 3+)，Yb(上标 3+)材料。

The orthogonal experimental design was applied to investigate the effects of zirconia source Zr(NO34·5H2O, ZrOCl2·8H2O,precipitants and sulfating agent (sulfuric acid, ammonium sulfate) on the catalytic performance of the catalysts unde the most superior condition .The catalytic activity was tested in esterification of acetic acid with butanol .

在最优的条件下用正交设计法考察锆源（Zr(NO3)4·5H2O，ZrOCl2·8H2O）、沉淀剂和硫酸化试剂对催化剂性能的影响，并通过乙酸和正丁醇的酯化反应的酯化率检测所制备的SO4/ZrO2催化剂的催化效果。

Deoxy-hemoglobin of Bar-Headed Goose was prepared with Na2S2O4 as reducing agent.The single crystals were obtained from polyethylene glycol solution 6000 at pH 7.2, 0.05mool/L phosphate buffer, protein 20mg/ml. Using the hanging drop methed.

报导了以Na2S2O4为还原剂制备脱氧血红蛋白，并以聚乙二醇溶液为沉淀剂，在pH7.2，蛋白浓度20mg／ml条件下培养出适合于X射线分析用的斑头雁脱氧血红蛋白晶体，经X射线平面探测仪收集衍射强度数据和处理。

The SinoChrom ODS-BP column(4.6mm×200mm i.d 5um) was used with the mobile phase of phospioricacid salt buffer solution.The recovery of benzoic acid was 93.2%.

此种方法用醋酸锌和亚铁氰化钾溶液作为沉淀剂，以磷酸盐缓冲溶液作为流动相，用SinoChrom ODS-BP柱（4.6mm×200mm i.d 5um）液相色谱柱分离，用伊利特UV-230+紫外可见检测器进行检测。

The proteins in milk and dairy products were mostly eliminated by the precipitators. Three aseptics and two sweeteners were separated on a C18 column with the mobile phase of methanol -0.05mol/L potassium dihydrogen phosphate under gradient elution. With a diode array detector, acesulfame, benzoic acid, and sorbic acid were detected at 230 nm and sodium saccharin and aspartame were detected at 210nm.

通过加入适量沉淀剂除去样品中绝大部分蛋白质后，采用C18色谱柱分离，以甲醇－0.05mol/L磷酸二氢钾溶液为流动相梯度洗脱，用二极管阵列检测器于230nm波长处检测安赛蜜、苯甲酸和山梨酸，于210nm波长处检测糖精钠和阿斯巴甜。

The present paper developed a new method in which extract analytes from seafood product s by DI water followed by precipitating proteins from extraction by trifluoroacetic acid and analyse polyphosphates in pre- pared extraction by suppressed conductivity ion chromatography whose gradient eluents were obtained by Eluent Generator.

本文建立了一种采用去离子水提取，三氟乙酸作为蛋白沉淀剂对海产品样品进行前处理，采用淋洗液自动发生装置在残产生 KOH 进行梯度淋洗，抑制型电导离子色谱法，检测海产品样品中多聚磷酸盐的方法。

The present paper developed a new method in which extract analytes from seafood product s by DI water followed by precipitating proteins from extraction by trifluomacetic acid and analyse polyphosphates in pre- pared extraction by suppressed conductivity ion chromatography whose gradient eluents were obtained by Eluent Generator.

本文建立了一种采用去离子水提取，三氟乙酸作为蛋白沉淀剂对海产品样品进行前处理，采用淋洗液自动发生装置在线产生KOH进行梯度淋洗，抑制型电导离子色谱法，检测海产品样品中多聚磷酸盐的方法。

Despite NH3-H2O is consumed in chemical reaction,(NH4)2SO4 can be directly reclaimed for the chemical fertilizer or ammonia,and ammonia can be recycled as precipitating agent .

与传统的酸法制备铁黄颜料工艺不同的是，本研究用NH_3·H_2O代替NaOH作沉淀剂制晶种，在二步氧化中通过滴加氨水和硫酸亚铁溶液替代铁皮。

Despite NH_3·H_2O is consumed in chemical reaction,(NH_4)2SO_4 can be reclaimed for the chemical fertilizer or ammonia, and ammonia can be recycled as precipitating agent.

反应过程中虽然消耗了氨水，但溶液中的(NH_4)2SO_4可回收用做肥料，也可回收氨，回收氨可返回用做沉淀剂，合理利用了资源。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。