permissible levels of nitrates in water

More expensive nitrating agents may be used.

还可应用较贵的硝化剂.

The plants keep the nitration nitrogen in their roots.

植物用根部将氮保存起来.

Any crops sharing the same space can get the nitration nitrogen as the roots deep composedecompose.

在同一空间生长的作物可以在根部腐化时获得氮.

The advanced nitration technology and hydrogenation technology are discussed. The aniline production quantity is explained.

介绍了苯胺生产中先进的硝化技术、还原技术;阐述了国内外苯胺的生产情况.

Part III : High-efficient nitration reaction of N, N-dialkylanilines under mild and neutral conditions.

N, N - 二烷基苯胺在温和、中性条件下的高效硝化反应.

The nitration of pcymene may lead to dinitrotoluene.

硝化对位异丙基甲苯时会生成二硝基甲苯.

In the reaction of acetylation and nitration 1,2 ? dichloroethane was used as solvent.

在乙酰化、硝化反应中引入了1,2-二氯乙烷溶剂.

Complete nitration takes about 10 minutes at room temperature.

完全硝代需要大约10分钟在室温.

The nitration of this may lead to dinitrotoluene.

对此的硝化会生成二硝基甲苯.

The hydrolysis and nitration reaction of tetraacetylhexaazaisowurzitane ( TAIW ) were studied under several nitration conditions.

摘要研究了四乙酰基六氮杂异伍兹烷在稀硝酸/催化剂介质中的水解硝化.

Traditional one-protein-at-a-time methods had uncovered only half a dozen brain proteins susceptible to nitration.

但是,该研究是蛋白质组学应用的最好例子.

The effect of chloroacetyl chloride and bromoacetyl bromide on yields of intermediates and nitrazepam was compared.

比较了氯乙酰氯和溴乙酰溴对中间体及硝基安定收率的影响.

They used lumps of nitre, a sodium compound from the ship.

他们使用了船上的硝石块-钠的一种化合物.

Phenols and anilides can be nitrated with very dilute nitric acid.

酚类和酰基苯胺能被极稀的硝酸硝化.

Nitric acid molecules are linked by hydrogen bonds.

硝酸分子以氢键互相连结.

Separation of the two components is accomplished by dissolving the frit in dilute nitric acid.

将玻璃料溶于稀硝酸中来完成两个组分的分离.

Nitracidium and hydronitracidium nitrastes are present in concentrated nitric acid.

浓硝酸中有硝酸合氢和氢合硝酸合氢的硝酸盐存在.

The results indicate that TRPO can effectively extract Am from medium concentration nitric acid solution.

结果表明,30%TRPO可以有效地从中等浓度硝酸介质中去除镅.

And the nitric acid productive rate is fixed as the function of the optimization.

并选择硝酸的产率作为优化的最终目标.

The test sample was treated by nitric acid and hydrogen fluoride acid.

用氢氟酸及硝酸处理试样,并加入适量盐酸.