| 磺酰脲类除草剂及其主要降解产物分配系数的测定与预测 |
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| 引用本文： | 韦丽萍 冯建舫. 磺酰脲类除草剂及其主要降解产物分配系数的测定与预测[J]. 环境化学, 1998, 17(5): 457-461 |
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| 作者姓名： | 韦丽萍 冯建舫 |
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| 作者单位： | 污染控制与资源利用国家重点实验室南京大学环境科学与工程系!南京210093(韦丽萍，冯建舫，于红霞)，污染控制与资源利用国家重点实验室南京大学环境科学与 (王连生) |
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| 摘 要： | 本文测定了甲黄隆，氯黄隆，苄嘧黄隆及其主要降解产物取代磺胺和取代氮杂环化合物的辛醇－水分配系数，研究了反相高效液相色谱容量因子、分子连接性指数、Ｌｅｏ碎片常数与分配系数间的相关关系，从而建立了估算磺酰类除草剂及其降解产物的疏水性方程。
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| 关 键 词： | 辛醇 分配系数 磺酰脲类 除草剂 污染物质 降解 |
DETERMINATION AND PREDICTION OF PARTITION COEFFICIENT FOR SULFONYLUREAS AND THEIR MAIN DEGRADATION PRODUCTS |
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| Wei Liping Feng Jianfang Yu Hongxia Wang Liansheng. DETERMINATION AND PREDICTION OF PARTITION COEFFICIENT FOR SULFONYLUREAS AND THEIR MAIN DEGRADATION PRODUCTS[J]. Environmental Chemistry, 1998, 17(5): 457-461 |
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| Authors: | Wei Liping Feng Jianfang Yu Hongxia Wang Liansheng |
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| Abstract: | The lgKow values of metsulfuron methyl, chlorsulfuron, bensulfuron methyl and their main degradation products were determined by shake-flask method. The capacity factors were determined by RP-HPLC with C18 colunn and methanol-water eluent. First order molecular connectivity indices (MCIs) and sums of Leo-molecular-part-constant were calculated for these compounds and used to describe their lgKow values. Results demonstrated that while the HPLC results. MCIs and sums of Leo-molecular-part-constant could be used to predict the lgKow for all of the compounds, the HPLC method was more accurate than MCIs methods, and easier than the Leo-molecular constant method. |
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| Keywords: | n-octanol-water partition coefficient HPLC capacity factor sulfony-lureas. |
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