Quality Control of Determination of Formaldehyde in Indoor Air by 4-Amino-3-Hydrazine-Mercapto-1, 2, 4-Amilinoazaole Spectrophotometry
- VernacularTitle:室内空气中甲醛的4-氨基-3联氨-5巯基三氮杂茂分光光度测定法的质量控制
- Author:
Li JIANG
;
Zhong YIN
;
Weiguo ZHANG
- Publication Type:Journal Article
- Keywords:
Air pollution, indoor;
Spectrophotometry;
Formaldehyde;
Quality control
- From:
Journal of Environment and Health
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research the quality control of determination of formaldehyde concentration in the indoor air in the newly decorated houses with 4-amino-3-hydrazine-mercapto-1, 2, 4-amilinoazaole spectrophotometry. Methods 35 newly decorated houses in two urban districts of Guiyang were chosen and the air samples were collected from March to December in 2004. Formaldehyde concentration was determined as soon as the air samples were collected, and the laboratory internal quality was controlled by using the standard sample in the determination. Results The formaldehyde concentration range of 35 newly decorated houses was 0.01-1.71 mg/m3, the detection rates was 100%, the rate of exceeding national standard was 77.1% and the median was 0.28 mg/m3. The recovery rates of quality control samples were 90.70%-103.00%. Conclusion The quality control method used in the present paper can make the results of formaldehyde concentration determinated with 4-amino-3-hydrazine-mercapto-1, 2, 4-amilinoazaole spectrophotometry be controlled in the demanded ranges of errors.
