在实验室模型生态系统中评估五种放射性标记煤转化副产物的环境归宿。
Environmental fate of five radio-labeled coal conversion by-products evaluated in a laboratory model ecosystem.
出版信息
Environ Health Perspect. 1978 Jun;24:201-8. doi: 10.1289/ehp.7824201.
Abstract
Anthracene, fluorene, carbazole, dibenzofuran, and dibenzothiophene are five typical by-products of coal conversion which are likely to be environmental pollutants. These were radiolabeled to high specific activity and purity by simple tritium exchange and evaluated for environmental fate in laboratory model ecosystems. Anthracene and fluorene were biologically converted to hydroxy and keto analogs. Carbazole was N-methylated and N-acetylated. Dibenzothiophene was microsomally oxidized to the sulfoxide and sulfone. Dibenzofuran was relatively inert to biodegradation. The octanol/water partition coefficient for the parent compounds was well correlated with ecological magnification indicating the possibility of predicting environmental behavior from physicochemical parameters.
摘要
蒽、芴、咔唑、二苯并呋喃和二苯并噻吩是煤转化过程中产生的五种典型副产物，可能是环境污染物。这些物质通过简单的氚交换被放射性标记为高比活度和高纯度，并在实验室模型生态系统中评估其环境归宿。蒽和芴被生物转化为羟基和酮类似物。咔唑被 N-甲基化和 N-乙酰化。二苯并噻吩被微粒体氧化为亚砜和砜。二苯并呋喃对生物降解相对惰性。母体化合物的辛醇/水分配系数与生态放大系数很好地相关，表明可以从物理化学参数预测环境行为。
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