Table of Contents

Introduction
1 Scope
2 Normative references
3 Principle
4 Limitations and interferences
4.1 General
4.2 Ozone interference
5 Safety measures
6 Apparatus
6.1 Sampling
6.2 Sample preparation
6.3 Sample analysis
7 Reagents
7.1 2,4-Dinitrophenylhydrazine
7.2 Acetonitrile
7.3 Water
7.4 Perchloric acid
7.5 Hydrochloric acid
7.6 Formaldehyde
7.7 Aldehydes and ketones
7.8 Ethanol or methanol
7.9 Nitrogen
7.10 Activated carbon
7.11 Helium
8 Preparation of reagents and cartridges
8.1 Purification of 2,4-dinitrophenylhydrazine
8.2 Preparation of DNPH-formaldehyde derivative
8.3 Preparation of DNPH-formaldehyde standards
8.4 Preparation of DNPH-coated silica gel cartridges
9 Procedure
9.1 Sample collection
9.2 Process blanks
9.3 Sample analysis
10 Calculations
11 Performance criteria and quality assurance
11.1 General
11.2 Standard Operating Procedures (SOPs)
11.3 HPLC system performance
11.4 Sample loss
12 Test report
13 Precision and uncertainty
Annex A (informative) Precision and uncertainty
Annex B (informative) Melting points of DNPH-carbonyl
derivatives
Bibliography
Annex 1 (informative) Comparison table between JIS and
corresponding International Standard

Abstract

Defines a procedure for the determination of formaldehyde (HCHO) and other carbonyl compounds in air.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Japanese Standards Association
Pages
ISBN
Supersedes	JIS A 1962:2005