A COMPACT COILED DENUDER FOR ATMOSPHERIC SAMPLING

被引：25

作者：

PUI, DYH ^{[1
]}

LEWIS, CW ^{[1
]}

TSAI, CJ ^{[1
]}

LIU, BYH ^{[1
]}

机构：

[1] US EPA, ATMOSPHER RES & EXPOSURE ASSESSMENT LAB, RES TRIANGLE PK, NC 27711 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1990年 / 24卷 / 03期

关键词：

D O I：

10.1021/es00073a003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A compact coiled denuder has been designed and its performance evaluated both theoretically and experimentally. The design is based on special features of laminar flow in a curved tube, which significantly enhance the mass-transfer Sherwood number governing gas collection at the wall. At 10 standard L/min (slpm) the gas collection efficiency for SO2, using a sodium carbonate/glycerine wall coating, was measured to be 99.3 ± 0.5%, while losses for particles in the range of 0.02–2.5-μm diameter averaged well under 5%. © 1990, American Chemical Society. All rights reserved.

引用

页码：307 / 312

页数：6

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