1、 FINAL REPORT on INTERLABORATORY COOPERATIVE STUDY OF THE PRECISION AND ACCURACY OF THE MEASUREMENT OF DUSTFALL USING ASTM METHOD D1739 J.F.Foster,G.H.Beatty and J.E.Howes,Jr.Battelle Memorial Institute ASTM DATA SERIES PUBLICATION DS 55-S4 List price$5.00 05-055040-17 fib AMERICAN SOCIETY FOR TESTI
2、NG AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 BY AMERICAN SOCIETY FOR TESTING AND MATERIALS 1974 Library of Congress Catalog Card Number:74-76206 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.(Battelle is not engaged in research
3、for advertising,sales f promotion,or publicity purposes,and this report may I not be reproduced in full or in part for such purposes.I Printed in West Point,Pa.April 1974 TABLE OF CONTENTS Page INTRODUCTION 1 SUMMARY OF RESULTS 1 EXPERIMENTAL PROGRAM 3 Test Characteristics 3 Test Procedure 3 Test Pa
4、ttern 4 Spiking Procedure 4 Test Sites 4 Site No.1,Los Angeles,California 4 Site No.2,Bloomington,Indiana 11 Site No.3,Manhattan,New York,New York 11 Participating Laboratories 11 STATISTICAL ANALYSIS OF DUSTFALL MEASUREMENTS 13 Statistical Measures 13 Reproducibility 13 Repeatability 13 Accuracy 14
5、 Experimental Data 14 Analysis of Reproducibility 18 Analysis of Repeatability.23 Analysis of Accuracy 25 Analysis of the Variability of Water Soluble and Water Insolu-ble Dustfall Determinations 25 Analysis of the Variability of the Recovery of Water Soluble and Water Insoluble Dustfall Spike.27 An
6、alysis of Between-Rack and Within-Rack Variability 32 DISCUSSION AND CONCLUSIONS .32 RECOMMENDATIONS 33 ACKNOWLEDGEMENTS 34 REFERENCES.36 APPENDIX STANDARD METHOD FOR COLLECTION AND ANALYSIS OF DUSTFALL(SETTLEABLE PARTICULATES)41 LIST OF TABLES Page Table 1.Statistical Design of Dustfall Tests at th
7、e Los Angeles Site Table 2.Statistical Design of Dustfall Tests at the Bloomington Site Table 3.Statistical Design of Dustfall Tests at the Manhattan Site Table 4.Data from Dustfall Experiments at Los Angeles Site.Table 5.Data from Dustfall Experiments at Bloomington Site.Table 6.Data from Dustfall
8、Experiments at Manhattan Site.Table 7.Dustfall Weight Data-Los Angeles Site Table 8.Dustfall Weight Data-Bloomington Site Table 9.Dustfall Weight Data-Manhattan Site Table 10.Summary of Between-Laboratory Variability(Reproducibi-lity)of Dustfall Measurements Table 11.Summary of Within-Laboratory Var
9、iability(Repeatability)of Dustfall Measurements Table 12.Summary of Total Dustfall Spike Recovery Data Table 13.Analysis of Variance of Water Soluble and Water Insolu-ble Dustfall Determinations Table 14.Water Soluble and Water Insoluble Spike Recovery Data For Los Angeles Dustfall Samples Table 15.
10、Water Soluble and Water Insoluble Spike Recovery Data for Bloomington Dustfall Samples Table 16.Water Soluble and Water Insoluble Spike Recovery Data for Manhattan Dustfall Samples Table 17.Analysis of Variance of the Recovery of Water Soluble and Water Insoluble Dustfall Spikes 6 7 15 16 17 19 20 2
11、1 18 25 26 27 29 30 31 32 3.1 LIST OF FIGURES Page Figure 1.Diagram of Placement of the Dustfall Containers in The Test at Los Angeles 8 Figure 2.Diagram of Placement of the Dustfall Containers in The Tests at Bloomington and Manhattan 9 Figure 3.Arrays of Dustfall Collectors(D1739)and Total Sulfati
12、on Detectors(D2010)on Rooftop Racks at Los Angeles 10 Figure 4.Ground Level Site at Columbus,Ohio of the Dustfall(D1739)and Total Sulfation(D2010)Test Started at Bloomington,Indiana 12 in INTERLABORATORY COOPERATIVE STUDY OF THE PRECISION AND ACCURACY OF THE MEASUREMENT OF DUSTFALL USING ASTM METHOD
13、 D 1739 by J.F.Foster,G.H.Beatty,and J.E.Howes,Jr.INTRODUCTION This report represents the results obtained from an experimental study of the variability inherent in measurements of dustfall,using ASTM Method D 1739.The report also includes a description of the experi-mental program together with tab
14、ulations of the data and the statistical interpretations of the results.The evaluation of ASTM Method D 1739 was performed as part of the first phase of Project Threshold,a comprehensive program to validate ASTM methods of measuring atmospheric contaminants.In addition,methods for measuring the cont
15、ent of nitrogen dioxide(D 1607),sulfur dioxide(D 2914),lead(D 3112),total sulfation(D 2110),and particulate matter(D 1704)in the atmosphere have also been evaluated during Phase 1.SUMMARY OF RESULTS A statistical analysis of 84 dustfall determinations performed in accordance with ASTM Method D 1739
16、produced the following results:The average standard deviation for variations among single dustfall measurements by different laboratories(reproducibility)is 1.46 grams per square meter per 2 month(g/m-month)and is associated with a mean dustfall*References at end of report.DS55S4-EB/Apr.1974Copyright 1974 by ASTM International www.astm.org 2 of 6.45 g/m-month.Measurements at three dustfall 2 rates over the range of 3.28 to 10.47 g/m-month do not exhibit an apparent relationship between dustfall