Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Recommended extraction methods for four types of additives on plastic (micro)fibers
| Additives | Pretreatment | Extraction solution | Extraction time | |
|---|---|---|---|---|
| Conventional | Novel | |||
| Plasticizers | USE | Tetrahydrofuran, n-hexane, acetone | HFIP / chloroform (completed dissolved) | 20 min × (2–3 times) |
| Antioxidants | USE | Acetone, DCM, ethyl acetate | ||
| Flame retardants | USE | Acetone, n-hexane, DCM | ||
| Surfactants | USE | Methanol | ||
USE ultrasonic extraction
