A CONCEPTUAL-MODEL OF ORGANIC-CHEMICAL VOLATILIZATION AT WATERFALLS

被引：14

作者：

MCLACHLAN, M ^{[1
]}

MACKAY, D ^{[1
]}

JONES, PH ^{[1
]}

机构：

[1] UNIV TORONTO,INST ENVIRONM STUDIES,TORONTO M5S 1A4,ONTARIO,CANADA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1990年 / 24卷 / 02期

关键词：

D O I：

10.1021/es00072a015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A conceptual model of volatilization of organic chemicals at waterfalls is presented. It is suggested that the extent of volatilization may be controlled by diffusion limitations (as is the case with oxygen and chemicals with large air-water partition coefficients), by the flow rate of air into the plunge pool (for chemicals with low air-water partition coefficients), or both. The model is applied to 11 organic contaminants present in the water of Niagara Falls. The results suggest that volatilization is significant for chloroform, chlorinated benzenes, and PCBs, but negligible for 2,3,7,8-TCDD, 7-HCH, and PAHs. The model can generate only order of magnitude estimates. Model validation is required for more exact predictions. © 1990, American Chemical Society. All rights reserved.

引用

页码：252 / 257

页数：6

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