You need JavaScript to view this

Accuracy of total oxidant measurement as obtained by the phenolphthalin method

Journal Article:

Abstract

The phenolphthalin method of Haagen-Smit and Brunelle (1958) was chosen for a preliminary survey of total oxidant level in Pretoria air, because of its sensitivity. Difficulty, however, was encountered in obtaining reliable standard curves. Some improvement was obtained when conducting all operations except photometer measurements at the temperature of melting ice. It was also found that when the sequence of adding the reagents was changed, so as to simulate conditions during actual sampling, a standard curve approximating a straight line and differing considerably from that of McCabe (1953) was obtained. It follows that values of total oxidant obtained by any experimentor will depend to a certain extent upon the method of standard curve preparation he uses, and when comparisons are made between measurements by experimentors in different towns or countries this factor should be taken into consideration. The accuracy (95% confidence) obtained by the phenolphthalin method, using the mean of three successive samples, was shown to be in the region of 30% for very low amounts of oxidant.
Publication Date:
Jan 01, 1963
Product Type:
Journal Article
Reference Number:
EDB-84-170006
Resource Relation:
Journal Name: Int. J. Air Water Pollut.; (United Kingdom); Journal Volume: 7
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION; MONITORING; CHEMISTRY; MEASURING METHODS; OXIDIZERS; OZONE; PHENOLPHTHALEIN; AROMATICS; CARBOXYLIC ACID ESTERS; ESTERS; HYDROXY COMPOUNDS; INDICATORS; ORGANIC COMPOUNDS; PHENOLS; POLLUTION; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
6484737
Research Organizations:
C.S.I.R., Pretoria, South Africa
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: IAPWA
Submitting Site:
HEDB
Size:
Pages: 1033-1041
Announcement Date:
Oct 01, 1984

Journal Article:

Citation Formats

Louw, C W, and Halliday, E C. Accuracy of total oxidant measurement as obtained by the phenolphthalin method. United Kingdom: N. p., 1963. Web.
Louw, C W, & Halliday, E C. Accuracy of total oxidant measurement as obtained by the phenolphthalin method. United Kingdom.
Louw, C W, and Halliday, E C. 1963. "Accuracy of total oxidant measurement as obtained by the phenolphthalin method." United Kingdom.
@misc{etde_6484737,
title = {Accuracy of total oxidant measurement as obtained by the phenolphthalin method}
author = {Louw, C W, and Halliday, E C}
abstractNote = {The phenolphthalin method of Haagen-Smit and Brunelle (1958) was chosen for a preliminary survey of total oxidant level in Pretoria air, because of its sensitivity. Difficulty, however, was encountered in obtaining reliable standard curves. Some improvement was obtained when conducting all operations except photometer measurements at the temperature of melting ice. It was also found that when the sequence of adding the reagents was changed, so as to simulate conditions during actual sampling, a standard curve approximating a straight line and differing considerably from that of McCabe (1953) was obtained. It follows that values of total oxidant obtained by any experimentor will depend to a certain extent upon the method of standard curve preparation he uses, and when comparisons are made between measurements by experimentors in different towns or countries this factor should be taken into consideration. The accuracy (95% confidence) obtained by the phenolphthalin method, using the mean of three successive samples, was shown to be in the region of 30% for very low amounts of oxidant.}
journal = {Int. J. Air Water Pollut.; (United Kingdom)}
volume = {7}
journal type = {AC}
place = {United Kingdom}
year = {1963}
month = {Jan}
}