查询词典 cyanide

The technical conditions for recovering cyanide from agrochemical waste water by liquid-film method is studied,and the various surfactants and kerosm as oil phase and alkine liquid as liquid phase affecting the cyanide waste water treatment are tested.Therefore, the oPtimum process conditions are determined.

研究了液膜法回收农药废水中氰化物的工艺条件，考查了以不同表面活性剂、煤油等为油相组分，碱液作内相的乳状液，对连云港市第二农药厂合氰废水的处理效果，确定了最佳的工艺条件。

Based on analysis on the dosage of sodium cyanide and research on its leaching mechanism in gold concentrate leaching,a new technique that the mixture of ammonium carbonate and ammonium hydroxide can reduce the dosage of sodium cyanide is put forward.

通过对氰化浸出过程氰化钠消耗情况分析，在进一步研究金精矿氰化浸出机理的基础上，提出了采用碳酸铵、氢氧化铵混合试剂降低氰化钠用量的新工艺。

High purity potassium silver cyanide and potassium gold cyanide were prepared using air blasting cyanidation technique for the first time.

提出了以粗金和粗银为原料制备金银的超细或纳米粉末，用鼓氧氰化技术直接制备氰化亚金钾和氰化银钾的的新方法。

Furthermore, this paper explored a new feasible process of cyanide recovery,investigated the effect of time, concentration of H2SO4 and temperature on the elution of cyanide and zinc in the process of first stage elution, and discussed the effect of time,concentration of ammonia water, temperature and ultrasonic on the elution of copper in the second stage elution.

另外，本实验探索出一种可行的回收氰化物新工艺，在硫酸解吸过程中，研究了硫酸解吸的时间、浓度和温度因素对氰和锌的解吸率的影响；在氨水解吸实验中探讨了时间、温度、浓度、超声波等因素对铜解吸率的影响。

Cyanide in water, in tissues of aerial part of plants and in air was analyzed spectrophotometrically. Results from this study indicated less than 10.85% reduction of the applied iron cyanide complex was detected in hydroponic solution in the presence of plants. Little amounts of cyanide were found in all parts of plant tissues, indicating the passage of ferrocyanide through the plants.

结果表明：(1)低浓度实验组52.99mg CN L^(-1水溶液中10.85%的亚铁氰化物被植物吸收，随着浓度的升高吸收到植物体内的亚铁氰化物的比例依次递减，但是统训学分析显示各实验组单位体重的植物吸收亚铁氰化物的量无显著性差异；(2)在植物的各个部位都能检测到微量的亚铁氰化物，表明亚铁氰化物通过植物的蒸腾作用在植物体内的迁移。

Cyanide ion is one of the most toxic inorganic anions one can find, but cyanide or hydrogen cyanide are used in many industries.

氰化物为环境中公认的无机剧毒物，对环境的污染尤其是水资源的污染已成为一个严重的问题。

A highly effective screening model was built, in which enrichment was conducted by adding a definite amount of cyanide into the innutrient medium. Forty-nine kinds of cyanide-resistant strains were isolated from twenty samples of soil, among which twenty-nine kinds of strains showed the cyanide-degradation ability and the bacterial strain numbered DC02 was the best.

构建筛选模型，通过施加选择压力，即在一相对贫乏的培养基中加入一定量的氰化物来进行富集，从20份土壤中筛选出49株耐氰菌，29株具有降氰活性，其中菌株DC02降氰效果最佳。

Properties : White crystallization or powder , proportion 1.735 , melting point is 287 ℃, apt to dissolve in water , ethanol and propanone , aqueous solution is neutral , turn into the blood red sulphur cyaniding iron with molysite , reactionless with inferior molysite, salt function turns into dark blue sulphur cobalt cyanide, turn into white sulphur silver precipitating or black sulphur copper cyanide cyanide to precipitate with the silver salt or copper salt function with cobalt.

白色结晶或粉末，比重 1.735 ，熔点 28 7 ℃，易溶于水、乙醇和丙酮，水溶液呈中性，与铁盐生成血红色的硫氰化铁，与亚铁盐则无反应，与钴盐作用生成深蓝色的硫氰化钴，与银盐或铜盐作用生成白色的硫氰化银沉淀或黑色的硫氰化铜沉淀。

Corrosion rate of non-cyanide cadmium coatings is similar to cyanided ones. It is considered that non-cyanide cadmium coatings can be used for four types of cli- mates instead of cyanide coatings in case of some conditions.

无氰镀镉层的腐蚀速率与氰化镀镉接近，可以认为在一定条件下无氰镀镉能够代替氰化镀镉工艺用于上述4种典型的大气环境的腐蚀防护。

Process development for the gold concentrate roasting- cyanide leaching in China;2. The feasibility study of extracting gold by liquid membrane techuique from the pulp of cyanide leaching ;3. Discussion on the cause of low silver leaching rate taken place in gold and silver cyanide leaching and ways to increase it

加强充气搅拌预氧化可将含金硫化矿在磨矿过程中产生的、对氰化浸出有害的难免离子氧化成对氰化浸出无害的离子，同时在磁黄铁矿和白铁矿颗粒表面生成Fe3薄膜，阻止了它们的进一步溶解，从而大大提高了金银的氰化浸出率。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。