测量微生物速率常数的动力学概念：营养物质对速率常数的影响。
Kinetic concepts for measuring microbial rate constants: effects of nutrients on rate constants.
机构信息
Environmental Research Laboratory, U.S. Environmental Protection Agency, Athens, Georgia 30613.
出版信息
Appl Environ Microbiol. 1986 Feb;51(2):221-5. doi: 10.1128/aem.51.2.221-225.1986.
Abstract
We investigated the effect of preincubation of environmental waters amended with inorganic nutrients (nitrogen, phosphorus, and traces of iron and magnesium) on the kinetics of the microbial transformation of phenol, propanil, propyl ester of (2,4-dichlorophenoxy)acetic acid, methyl parathion, Ronnel, and methoxychlor in pond and river waters. No effect on the second-order rate constants for these compounds was observed, although there was an increase in the bacterial populations and the pseudo-first-order rate constants. The use of nutrient-amended waters could be a useful tool for estimating second-order rate constants for an expanded number of compounds. This technique would provide a larger data base for predicting the behavior of xenobiotic compounds in the environment by using currently available mathematical models.
摘要
我们研究了用无机营养物（氮、磷以及痕量的铁和镁）修正的环境水对微生物转化苯酚、丙草胺、（2，4-二氯苯氧基）乙酸丙酯、甲基对硫磷、Ronnel 和甲氧氯的动力学的影响。尽管细菌种群和伪一级速率常数有所增加，但对这些化合物的二级速率常数没有影响。使用营养物修正的水可以成为估计更多化合物的二级速率常数的有用工具。这种技术将通过使用当前可用的数学模型，为预测环境中外来化合物的行为提供更大的数据库。
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