| 摘要: |
| 采用一次平衡法初步研究了(土娄)土对十六烷基三甲基溴化铵(CTMAB)的吸附机制.结果表明,(土娄)土对CTMAB的吸附等温线属于S型,吸附量和吸附力很大;pH增加,土壤对CTMAB的吸附量略有增加;CTMAB在土壤表面是多层吸附,以单分子或二分子缔合体的形式吸附于土壤表面;CTMAB在土壤-溶液体系的临界表面胶团浓度smc显著小于溶液体系CTMAB的临界胶团浓度cmc. |
| 关键词: (土娄)土 十六烷基三甲基溴化铵 吸附 表面改性 |
| DOI： |
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| 基金项目:西北农林科技大学重点专项基金 |
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| Studies on the adsorption of cetyltrimethylammouium bromide (CTMAB) in old manured loessal soil |
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| Abstract: |
| The adsorption of cetyltrimethylammouium bromide in old manured loessal soil was studied by equiliibrium method.Results showed that the adsorption isotherms belonged to S type,the adsorbed amount and adsorbed affinity were very high.The adsorbed amount increased slightly with the increase of pH.CTMAB adsorption in soil was multi-layer,CTMAB with single molecule or double molecule combination was adsorbed by soil.Surface micelle concentration(smc) of CTMAB in soil-solution system was obviously less than critical micelle concentration(cmc) of CTMAB in solution. |
| Key words: old manured loessal soil,cetyltrimethylammouium bromide,adsorption,surface modification |
