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Time:2023.02.20
Publisher:Admin
Number:2654
2023.02.20
Admin
2654
Abstract
Referring to HJ 734-2014 Analysis of Volatile Organic Compounds from Stationary Sources, 24 kinds of volatile organic compounds were detected by GC-MS. Volatile organic compounds were qualitatively and quantitatively by internal standard method according to retention time, mass spectrometry and characteristic ions.
1. Configuration scheme
2 Test the conditions
Injection method: automatic thermal desorption instrument
Injection mode:Split;Split ratio: 10:1
Column: RTX-624, 60m×0.25mm×1.4μm constant-current mode column flow: 1ml/min
Column oven heating procedure: 30℃ (5min) 6℃/min 140℃ (0min) 15℃/min 220℃ (3min)
GC Inlet: 200℃; Ion source: 230℃; Transmission line: 250℃;
Solvent delay: 8min;
SCAN mode: Full scan (SCAN) or select ion (SIM); Scanning range: 35~270amu.
3、Test results
3.1 Qualitative results of volatile organic compounds
Figure 1 Standard spectrum of 100mg/L volatile organic compounds
3.2 TIC diagram of standard samples of different concentrations
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