研究论文
黄国兰,陈志琼,戴树桂.丁基锡化合物在水体悬浮颗粒物上的吸附行为研究[J].环境科学学报,1998,18(2):137-143
丁基锡化合物在水体悬浮颗粒物上的吸附行为研究
- ADSORPTION BEHAVIOR OF BUTYLTIN COMPOUNDS OF SUSPENDED PARTICULATE MATTER IN WATER BODY
- 基金项目：
- 作者
- 单位
- 黄国兰
- 南开大学环境科学系, 天津 300071
- 陈志琼
- 南开大学环境科学系, 天津 300071
- 戴树桂
- 南开大学环境科学系, 天津 300071
- 摘要：将海河河口表层底泥制成悬浮颗粒物(SPM), 采用批量平衡法首次研究了模拟河口条件下三丁基锡(TBT)和二丁基锡(DBT)在该SPM上的吸附行为。结果表明,TBT和DBT均能在SPM上发生吸附,尤以TBT更为显着。吸附速率可用Kuo和Lake的经验公式描述；吸附过程受SPM的浓度及TOC含量、pH值、温度、腐殖酸浓度和盐度影响。实际河口水样中的SPM对TBT和DBT的吸附百分率也较高,因此SPM是TBT和DBT归趋的重要场所,去除SPM可使水体得到一定净化。
- Abstract：This paper reported for first time the adsorption behavior of butyltin compounds on the suspended particulate matter (SPM) under a simulated estuary condition by using batch equilibrium method.SPM is prepared by surface sediments from the Haihe estuary.The results showed that both TBT and DBT, especially TBT, can be adsorbed significantly on SPM.The adsorption rate may be expressed by the emeric equation of Kuo and Lake.The adsorption rate is influenced greater by the concentrations of SPM, TOC, humic acid, and temperature than by the salinity.APM in water sample taken from the estuary has even higher adsorption ability to TBT and DBT.This shows that SPM is an important sink to TBT and DBT and, consequently, the removal of SPM can purify water body to some extent.
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