Chloro-nitrobenzene compounds air sampling tube preparation and determination method
- Author:
WU fan RONG Wei feng YUAN jing HE Jia heng HU Jia wen MENG Rui bo WU Bang hua YU Ri an
- Publication Type:Journal Article
- Keywords:
Air sampling tube Chloro nitrobenzene compounds Workplace Air Detection
- From:
China Occupational Medicine
2022;49(06):697-
- CountryChina
- Language:Chinese
-
Abstract:
Objective - -
To prepare the GDH 5 air sampling tube for simultaneous collection of eight kinds of chloro nitrobenzene
（ ） ，
compounds CNBs in the air of workplace and establish a matching determination method using gas chromatography.
Methods - - ，
Eight kinds of CNBs in vapor and aerosol state were collected by self developed GDH 5 air sampling tube desorbed
， ， ，
by toluene separated by polysiloxane gas chromatography column detected by microcell electron capture detector and
Results - （ -
quantified by external standard method. It was determined that the air sampling tube was assembled by XAD 2 ion
） - ，
exchange resin and glass fiber filter membrane. The linear range of CNBs was 0.80 240.00 mg/L and the linear correlation
- -
coefficients were greater than 0.999 9. The detection limit was 7.87 13.03 μg/L. The minimum detectable concentration was 0.60
3， - 3（ ）
1.33 μg/m and the minimum quantitative concentration was 2.00 4.22 μg/m sample 45.00 L . The average desorption
- - （RSD） - ， - RSD
efficiency was 101.2% 110.0%. The within run relative standard deviation was 0.8% 4.1% and the between run
- Conclusion -
was 0.3% 5.8%. The samples could be stored for more than 30 days at room temperature. GDH 5 air sampling
tube and its associated determination method can be used for the collection and determination of eight kinds of CNBs in
workplace air.
