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建立了皮革中N-甲基吡咯烷酮(NMP)和N-乙基吡咯烷酮(NEP)含量的高效液相色谱测定方法,优化了样品前处理条件。在5~100mg/L范围内,该方法对NMP和NEP均具有较好的线性关系,加标回收率均高于98%。对市售皮革样品的测定结果显示,NMP和NEP被广泛应用于各类皮革产品中,且不同品种、用途和地区的皮革中NMP的含量差异较大,明显高于NEP含量,表明了NMP的污染风险较高。
A method for the determination of N-methyl pyrrolidone (NMP) and N-ethyl pyrrolidone (NEP) in leather was established and the pretreatment conditions were optimized. In the range of 5 ~ 100mg / L, this method has a good linear relationship between NMP and NEP, and the recoveries of the spiked samples are higher than 98%. Determination of commercially available leather samples showed that NMP and NEP were widely used in various types of leather products, and the NMP content of leather in different varieties, uses and regions were significantly different and significantly higher than that of NEP, indicating that NMP Pollution risk is high.