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本文利用电感耦合等离子体发射光谱仪(ＩＣＰ—ＡＥＳ法)同时测定接装纸样品中铅、铜、镉、铬、锡、锑元素含量,汞、砷元素含量采用冷原子吸收光谱法和银盐法测定。结果表明:接装纸样品中锡元素含量最高,铜次之,汞、砷、铅相比,砷元素含量较高,部分样品中砷、铅元素含量超出食品包装用纸的最高限量标准。采用ＩＣＰ—ＡＥＳ法同时测定接装纸６种元素,操作简便,重复性好,回收率高。此外,本文还对接装纸荧光物质和脱色程度进行了测定分析,从随机抽检的４７份国产、进口接装纸样品看,进口白色接装纸无荧光,国产白色接装纸有荧光,珠光色接装纸个别有荧光,纸边为白色的接装纸荧光程度不一。脱色试验表明,进口接装纸,国产印刷型接装纸、珠光纸不脱色,涂布型接装纸均有不同程度的脱色。
In this paper, inductively coupled plasma atomic emission spectrometry (ICP-AES) was used to simultaneously determine the contents of lead, copper, cadmium, chromium, tin and antimony in the paper samples. The contents of mercury and arsenic were determined by cold atomic absorption spectrometry Determination. The results showed that the contents of arsenic and lead in some samples were higher than those of copper, mercury, arsenic and lead. The content of arsenic and lead in some samples exceeded the highest limit of food packaging paper. Simultaneous determination of six elements of plug-in paper by ICP-AES method is simple and easy to operate with good repeatability and high recovery rate. In addition, this paper also measured and analyzed the degree of decolorization of the tipping paper fluorescent substance. From the random sample of 47 domestic and imported tipping paper samples, the import white tipping paper has no fluorescence, the domestic white tipping paper has the fluorescence and pearl color Tailored paper individually fluorescent, white paper tipping paper fluorescence levels vary. Decolorization test showed that the import tipping paper, domestic printing tipping paper, pearl paper does not decolorize, coated tipping paper has varying degrees of decolorization.