用于分析皮革样本中芳香胺质量含量的检定标准物质的表征

Characterisation of Leather Candidate Certified Reference Materials for their Mass Fractions of Aromatic Amines

用9种已经确认或被怀疑的在还原条件下将生成8种致癌芳香胺的染料,对3批皮革样品染色。将皮革样品切碎为颗粒后,装入到广口瓶中。由5个实验室组成的试验组,在环试验中采用不同方法分析这些芳香胺在皮革中所占的质量分数。这些分析方法均包括还原步骤,即,使偶氮染料裂解为芳香胺。采用向皮革子样本加入已知量的且已知纯度的偶氮染料这种标准加入法,进行定量分析。在这3批皮革样品中,可以对这8类芳香胺中的6种进行质量含量的分析。

Three batches of leather samples were colored with nine azo dyes that can yield eight proven or suspected carcinogenic aromatic amines under reduction conditions.The samples were milled to grains and bottled in jars.A group of ve laboratories has established the mass fraction of the amines in a ring test using different analytical methods.The methods included a reduction step in order to cleave the azo dyes into the aromatic amines.Quantication was by standard addition：sub-samples of the leathers were spiked with known amounts of azo dyes of known purity.It was possible to establish the mass fractions of six of the eight aromatic amines in three of the leather samples.