Engineering
Cause of Odor Investigation
The cause of the problem must be identified in order to solve the problem.
Sample Collection
We identify the tendency of the odor coming into the odor elimination facility, check the odor removal efficiency of each preventive facility, and proceed with the sample collection. The samples are collected at the workplace by coordinating the time and frequency of odor occurrence.
Sensory Evaluation 
The sensory evaluation is carried out with the collected samples. Sensory evaluation is a method of measuring, analyzing and interpreting the type and intensity of odor by taking the smell directly using the sense of smell since the intensity of the odor felt by each person is different.
Instrumental analysis
By using the analyzer, the actual substance and concentration of each collected sample are obtained, the threshold value is calculated using the concentration and the minimum detection value, and the contribution rate of the collected air is calculated.
| Analysis component | Sample Collection | Pretreatment | Detector |
|---|---|---|---|
| Sulfides | Vinyl (Plastic) Bag | Low Temperature Concentration | GC/FPD |
| Ammonia | Boric Acid Absorption Method | - | UV |
| Amines | Sulfuric Acid absorption method | Alkaline Decomposition Low Temperature Concentration | GC/MSD |
| Volatile Organic Compounds | Adsorption Traps | Low Temperature Concentration | GC/MS |
| Low Fatty Acid | Alkali Absorption Method | Hydrolysis of Hydrochloric Acid | GC/MSD |
| Aldehydes | DNPH Cartridge | Acetonitrile Solvent Extraction | HPLC |
