ADSORPTION OF PHENOL AND Pb^(2+) FROM AQUEOUS SOLUTIONS BY A NEW DI-FUNCTION ADSORBENT WITH SULFHYDRYL GROUPS

A new di-function adsorbent (JN-3) was prepared by sulfhydryl modified. Comparing with Amberlite XAD-4 and NDA-150, the equilibrium adsorption for phenol on the JN-3 from aqueous solutions was tested, perfect adsorption capacity was shown. Pb2+ can be also removed by JN-3 because of the chelate interaction between sulfhydryl groups and metal ions. This adsorbent could be used in removal of combine pollutants such as phenolic compounds and heavy metal ions from waste streams.

硫醇

硫醇是氢硫基或疏基-SH与脂肪烃基相连接的有机化合物,通式是R·SH,如甲硫醇（CH3SH）、乙硫醇（CH3CH2SH）。碳数较低的硫醇为气体,碳数较高为液体。具有强烈的气味和弱酸性。能被氧化成磺酸。和碱作用生成硫醇化物。由氢硫化钾与卤化烃作用而成。硫醇目前已被公认是一种对人体有害的物质。具有极其强烈的恶臭,当浓度在0.01ppm时明显地刺激嗅觉,是环境中恶臭来源之一。甲硫醇似强葱头臭,嗅觉阈值为0.041ppm,乙硫醇似烂卷心菜臭,嗅觉阈值0.00026ppm。硫醇的污染源,主要来自牛皮纸浆厂、炼油厂、煤气厂、农药厂、鱼肠骨加工厂等。

慢性阻塞性支气管炎的痰液溶解疗法

支气管粘膜粘液、纤毛上皮机能不全,是慢性阻塞性支气管炎发病机制的重要环节。用痰液溶解疗法治疗慢性阻塞性支气管炎151例,男110例,女41例,年龄18～62岁。分5组,第1组30例,吸入Ascoksal。第2组32例,吸入碳酸钠粉剂。第3组24例。

聚酰胺纤维

20046033 4-乙烯吡啶在尼龙6纤维上的自由基接枝Anbarasan R.…;Journal of Applied Polymer Science, 2002,86(12),P.3108(英) 氮气下、水溶液中的尼龙6纤维,以4-乙烯吡啶(4VP)作模型研究过氧化单硫酸(PMS)-氢硫基醋酸(TGA)氧化还原系统引发自由基接枝共聚物的化学特性。研究了4VP,PMS,TGA,尼龙6的浓度、时间、Rh温度以及接枝参数。报导了尼龙6-接枝-4VP的远红外图谱。测试了接枝纤维的水保持率(WRC)。(薛敏敏)