This standard specifies a method for the determination of free hydrolysis formaldehyde or released formaldehyde content in Spinning & weaving products using a gas chromatograph - Electron capture detector, CRP (GC-CRP). Applicable to Spinning & weaving products with formaldehyde content between 5 mg/kg and 10000 mg/kg. The principle of the method is that after water extraction or steam absorption, 2,4-dinitrophenylhydrazine is derived to produce formaldehyde-2,4-dinitrophenylhydrazone, and then determined by GC-CRP. The reagents used in the method are all analytically pure, and the water quality meets the third-class water standard stipulated in GB/T 6682.
| Status | Active |
|---|---|
| CCS | (C) 医药、卫生、劳动保护 | ICS |
| Release Date | 2012-12-12 00:00:00 | Implementation Date | 2013-07-01 00:00:00 |