禁用偶氮染料释放芳香胺欧盟测试方法,替代原-1&-2方法。
BS EN 14362-1:2012
EN 14362-1:2012 (E)
As Ac Aiss Aisc V
peak area of the amine in the specimen solution in area units; peak area of the amine in the calibration solution in area units;
peak area of the internal standard in the specimen solution in area units; peak area of the internal standard in the calibration solution in area units; final specimen volume made up to according to 9.4 in ml; amine solution volume used for check procedure, in ml; concentration of the amine in the calibration solution in µg/ml.
Vs
ρc
9.6.3 Calibration without internal standard
ρS=ρc ×
where
AsVs
× A c V
ρs
As Ac V
concentration of the amine in the sample solution in µg/ml; peak area of the amine in the specimen solution in area units; peak area of the amine in the calibration solution in area units; final specimen volume made up to according to 9.4 in ml; amine solution volume used for check procedure, in ml; concentration of the amine in the calibration solution in µg/ml.
Vs
ρc
Amine recovery rates shall comply with the following minimum requirements:
amines No. 1 to 4, 7, 9 to 17 and 20 to 21: 70 %; amine No. 8: 20 %; amines No. 18 and 19: 50 %; amines No. 5, 6 and 22, see footnotes to Table 1
aniline: 70 %
NOTE
Currently, there is insufficient experience to give minimum requirements for the amines not listed above.
10 Evaluation
10.1 General
If any amine is detected and/or quantified using daily calibration (6.10.2) above 5 mg/kg, the quantification shall be done using a multipoint calibration graph (6.10.3).
Plot a calibration graph of the response against the known standard concentration (corrected for the response for the internal standard if used). From the calibration graph, interpolate the concentration of the amine in µg/ml (ρs).
14
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