EFFECT OF PARTICLE-SIZE ON LEAD ABSORPTION FROM THE GUT

被引:72
作者
BARLTROP, D
MEEK, F
机构
[1] Department of Child Health, Westminster Childrens Hospital, London, Vincent Square
来源
ARCHIVES OF ENVIRONMENTAL HEALTH | 1979年 / 34卷 / 04期
关键词
D O I
10.1080/00039896.1979.10667414
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The relationship between particle size and absorption of lead particles from the gastrointestinal tract of the rat has been investigated. Preparations of metallic lead of particle size between 0 and 25011 were incorporated in laboratory rat diets and absorption determined by measurement of tissue lead concentrations aHained under standard conditions. An inverse relationship was found between particle size and lead absorption; this relationship was most marked i.n the 0 to 10011 range. A five-foM enhancement of absorption was observed from the diet with lead particles of mean size 611, compared with 19711 particle si.ze. Lead absorption from dried paint films containing lead chromate and lead octoate was measured using a similar technique. A marked enhancement of absorption was observed for both paints when particle size was reduced from 500 to 1, OOOJ.(to < 5011). © 1979 Taylor & Francis Group, LLC.
引用
收藏
页码:280 / 285
页数:6
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