查询词典 basic bithmuth nitrate

The analytical methods to determine COD in chemical wastewater by using silver nitrate in place of mercury sulfate to mask chloride ion were studied; Extracting silver chloride precipitation from the determined COD waste liquid, the feasibility of preparing silver sulfate catalyst by the direct reaction of silver chloride and concentrated sulfuric acid was analyzed.

研究了用硝酸银代替硫酸汞掩蔽氯离子测定化工废水中COD的分析方法；试验了从COD测定废液中提取氯化银沉淀，直接用氯化银与浓硫酸反应制备硫酸银催化剂的可行性。

Groundwater has been polluted by nitrates is the issue of public health departments and environmental agencies ③④ the concerns of a major event because of high nitrate levels in drinking water can cause young children methemoglobin disease ⑤.

地下水①被硝酸盐②所污染这一问题是公共卫生部门③和各环保机构④所关注的一件大事，因为饮用水的硝酸盐含量过高会造成幼儿高铁血红蛋白症⑤。

Excessive levels of nitrate, the form of nitrogen usually found in surface and groundwater (unless subject to gross contamination), can cause methemoglobinemia, or blue baby disease.

过量的硝酸盐类化肥，氮气的这种形式经常在水面或地下水中发现，可以产生突变，或黄色婴儿疾病。

By using water bath method that an aqueous solution of zinc nitrate（Zn（NO3）2·6H2O）reacted with an aqueous solution of equimolar methenamine（C6H12N4）,ZnO nanomaterials with controllable morphologies are successfully prepared. The influences of solution concentration and substrates on morphology of ZnO nanomaterials are discussed.

用硝酸锌（Zn（NO3）2·6H2O）与六亚甲基四胺（C6H12N4）以等浓度配制成反应溶液，通过水浴法制备出了形貌可控的棒状ZnO纳米结构，讨论了不同反应浓度及衬底对ZnO表面形貌的影响。

Denitrifying bacteria such as Pseudomonas, Micrococcus, and Clostridium use nitrate as the terminal electron acceptor in anaerobic respiration.

反硝化细菌有假单胞菌，微球菌以及梭菌。它们在厌氧呼吸中都能使用硝酸盐作为最终电子受体。

In the range of the C/N ratio of 1～14, nitrate reduction mainly occurred in the growth phase of the 4～10 hour and there was minim nitrite accumulation in the process.

当C/N在1～14之间变化时，硝酸盐还原基本都发生在菌株生长的第4～10h，整个反硝化过程中亚硝酸盐浓度一直保持在极低的水平。

My mother was lost in thought, looking at the arid plaincalcinated by nitrate that began at the mudhole of the port and merged with the horizon.

我妈坐在车上看着外面被盐碱化的干涸的平原，它从港口边的小镇一直延伸与地平线相接。

Against the AN properties of easy decomposability and polymorphic form, some operation and safety countermeasures are presented in its mixing, granulation and drying; Also by the slow combustibility of compound fertilizer based on ammonium nitrate, muriate of potash and monoammonium phosphate, the 3 portions of 2:2:1, 1:3:2 and 2:1:1 [m:m(P2O5):m(K2O)] are safe formulae.

根据硝酸铵易分解，多晶型的特性，阐述配料，造粒，干燥中的控制要点及安全措施；并根据硝酸铵，氯化钾，磷酸一铵为基础的氮，磷，钾复肥的缓慢燃烧特性，提出m：m(P2O5)：m(K2O)=2：2：1，1：3：2，2：1：1 均属安全配料范围。

The present invention adopts the technical proposal of adopting ZSM-5 mesoporous molecular sieve raw powder with a silicon-aluminum mol ratio SiO2Al2O3 of 20 to 1000 and a weight percentage of 20 to 100 percent as well as at least one caking agent selected from SiO2, clay and Al2O3 to extrude, tablet or spray into shape; then treating for 1 to 8 hours by 0.1 to 3 mol/l of at least one ammonium liquor from ammonium nitrate, ammonium chloride or ammonium sulphate or 0.1 to 8.5 mol/l of at least one acid liquor from muriatic acid, nitric acid, vitriol or acetic acid under a temperature of 20 to 90 DEG C; then using steam to treat for 2 to 15 hours under the temperature condition of 400 to 700 DEG C; using a liquor of 0.1 to 3mol/l selected from at least one of oxalic acid, citric acid or maleic acid under a temperature condition of 20 to 90 DEG C to dip for 2 to 5 hours to obtain the modified molecular sieve catalyst, thus better solving the problems.

本发明通过采用硅铝比SiO2/Al2O3为20～1000重量百分比计20～100％的ZSM-5介孔分子筛原粉与余量的选自SiO2、粘土或Al2O3中至少一种粘结剂挤条、压片或喷球成型；再经过0.1～3摩尔/升选自硝酸铵、氯化铵或硫酸铵中的至少一种铵溶液或0.1～8.5摩尔/升选自盐酸、硝酸、硫酸或乙酸中的至少一种酸溶液在温度20～90℃下处理1～8小时；然后在温度为400～700℃条件下水蒸汽处理2～15小时；再用0.1～3摩尔/升选自草酸、柠檬酸或马来酸中至少一种在温度为20～90℃条件下浸渍2～5小时得所需改性分子筛催化剂的技术方案较好地解决了该问题，可用于甲醇转化制丙烯的工业生产中。

The preparation procedure is as following: purification and assay for purity of neptunium, preparation of neptunium nitrate solution, making solution for ageing, subpacking the solution to ampoules, fire sealing, weighing for earch ampoule, homogeneity test, stability test, and certification.

以工厂的氧化镎作原料，经原料提纯→纯度鉴定→配成硝酸溶液→放置陈化→分装→火封→称重→均匀性检验→稳定性检验，最后进行定值。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我