EFFECT, UPTAKE AND DISPOSITION OF NITROBENZENE IN SEVERAL TERRESTRIAL PLANTS

被引：44

作者：

MCFARLANE, C ^{[1
]}

PFLEEGER, T ^{[1
]}

FLETCHER, J ^{[1
]}

机构：

[1] UNIV OKLAHOMA, DEPT BOT & MICROBIOL, NORMAN, OK 73019 USA

来源：

ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY | 1990年 / 9卷 / 04期

关键词：

Nitrobenzene; Plant; RCF; Toxicity; TSCF;

D O I：

10.1002/etc.5620090415

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Eight species of plants were exposed to nitrobenzene in a hydroponic solution. Four species experienced no depression of either transpiration or photosynthetic rates, while one was rapidly killed and the other three were temporarily affected but recovered from the treatment. Uptake of nitrobenzene was passive and was shown to be proportional to the rate of water flux in each species. The transpiration stream concentration factor (TSCF) was 0.72. The root concentration factor (RCF) was variable between the species and was higher than expected, presumably due to deposits of insoluble metabolic products. All of the species examined displayed a capacity to chemically alter nonpolar nitrobenzene into both polar and insoluble products. Volatilization of nitrobenzene from the leaves was a major route of chemical loss. Copyright © 1990 SETAC

引用

页码：513 / 520

页数：8

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