In purifying phase, the extracts were disposed by silica gel column chromatography and preparation lamella chromatography, then crystaled by N-Hexane.

纯化阶段，硅胶柱色谱及制备型薄层色谱处理提取物，正己烷沉淀结晶。

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Methods liver functions and liver B ultrasonic examination were carried out in 33 chronic n-hexane poisoning patients, 60 n-hexane exposed workers and 30 control workers.

方法对33例慢性正己烷中毒病例、60例接触正己烷的员工和无毒物接触史的30名工人进行肝功能及肝脏B超检查。

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Chronic n-Hexane poisoning is showing an increasing trend in recent years, which should be taken into great consideration.

近几年来，慢性正己烷中毒事故呈上升趋势，应引起全社会的重视。

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Now, the good news: Wintek has promised that workers will get their bonuses, and further said that the factory hasn't used n-hexane since August -- complete with proof that current n-hexane levels are lower than safety regulations require.

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Mr. Schmitz later confronted Mr. Daisey, and according to a transcript posted online, asked the stage performer about the workers he said were poisoned by the toxic chemical known as N-hexane.

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