异氰化物

When the cyanide is determined by isonicotinic acidpyrazalon method, the ethyl benzoate is distilled and goes into NaOH absorption liquid with cyanide in the process of predistillation, because its boiling point is low.

在用异烟酸吡唑啉酮法对其进行氰化物测定时，由于油酯类的沸点较低，在预蒸馏过程中被蒸出和氰化物一起进入NaOH吸收液

The wastewater from gum benzion production contains benzaldehyde, cyanide, gum benzoin and ethyl benzoate. When the cyanide is determined by isonicotinic acidpyrazalon method, the ethyl benzoate is distilled and goes into NaOH absorption liquid with cyanide in the process of predistillation, because its boiling point is low. Thus the absorption liquid produces a great deal of foam and feculence.

摘要］有机化工产品安息香生产废水中含有苯甲醛、氰化物、安息香和苯甲酸乙酯，在用异烟酸吡唑啉酮法对其进行氰化物测定时，由于油酯类的沸点较低，在预蒸馏过程中被蒸出和氰化物一起进入NaOH吸收液，使得吸收液产生大量泡沫和沉淀，严重干扰后续比色测定。

Measurement of cyanide ; isonicotinic acid-pyrazolone colorimetric method ; experimental condition

氰化物测定；异烟酸—吡唑啉酮比色法；实验条件

It presents the mechanism to Abstract total cyanide by using phosphoric acid-EDTA and the conditions to measure cyanide by using isonicotinic acid-pyrazolone colorimetry.

文章对17种含氰废水处理方法的主要原理和优缺点作了对比说明，阐述了用磷酸———EDTA提取总氰化物的机理以及用异烟酸———呲唑啉酮比色法测定氰化物的条件

It presents the mechanism to Abstract total cyanide by using phosphoric acid-EDTA and the conditions to measure cyanide by using isonicotinic acid-pyrazolone colorimetry.

阐述了用磷酸———EDTA提取总氰化物的机理以及用异烟酸———呲唑啉酮比色法测定氰化物的条件。

In this paper several methods including acylamide dehydration, metal cyanide replacement, etherification and isoxazole method for synthesis of 3,3-diethoxyethylcyanide were reviewed.

综述了3，3-二乙氧基丙腈的合成方法，包括酰胺脱水、金属氰化物取代、醚化和异恶唑法，用于工业化生产较为满意的合成路线是以1，1，3，3-四乙氧基丙烷为原料的异恶唑法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。