邻苯二甲酸酯类在河水和活性污泥中的生物降解
Biodegradation of phthalic acid esters in river water and activated sludge.
作者信息
Saeger V W, Tucker E S
出版信息
Appl Environ Microbiol. 1976 Jan;31(1):29-34. doi: 10.1128/aem.31.1.29-34.1976.
Abstract
The primary and ultimate biodegradability of phthalic acid, monobutyl phthalate, and five structurally diverse phthalic acid ester plasticizers in river water and activated sludge samples were determined via ultraviolet spectrophotometry, gas chromatography, and CO2 evolution. The compounds studied underwent rapid primary biodegradation in both unacclimated river water and acclimated activated sludge. When activated sludge acclimated to phthalic acid esters was used as the inoculum for the CO2 evolution procedure, greater than 85% of the total theoretical CO2 was evolved. These studies demonstrate that the phthalic acid ester plasticizers and intermediate degradation products readily undergo ultimate degradation in different mixed microbial systems at concentrations ranging from 1 to 83 mg/liter.
摘要
通过紫外分光光度法、气相色谱法和二氧化碳释放法测定了邻苯二甲酸、邻苯二甲酸单丁酯以及五种结构各异的邻苯二甲酸酯类增塑剂在河水和活性污泥样品中的初级和最终生物降解性。所研究的化合物在未驯化的河水和驯化的活性污泥中均经历了快速的初级生物降解。当将适应邻苯二甲酸酯的活性污泥用作二氧化碳释放程序的接种物时，释放出的二氧化碳总量超过了理论总量的85%。这些研究表明，邻苯二甲酸酯类增塑剂及其中间降解产物在浓度为1至83毫克/升的不同混合微生物系统中易于发生最终降解。
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