快速检测儿童玩具中邻苯二甲酸盐含量
A Rapid Analysis of Regulated Phthalates in Children Plastic Toys by TD–GCMS
——Frontier Laboratories Ltd.
邻苯二甲酸盐被广泛应用于增塑剂的商业产品中,但邻苯二甲酸盐会威胁人类的健康。关于邻苯二甲酸盐含量的法规已经建立,特别是对儿童的产品。欧盟规定塑料玩具中的6种邻苯二甲酸盐要低于0.1%的水平。在使用GCMS分析方法测定塑料玩具中邻苯二甲酸盐的含量时,通常要对目标样品先进行提取、浓缩、过滤等样品前处理过程。在本论文中,我们使用了(TD)-GCMS技术来替代上述较复杂的过程,方法简便快速。它是检测塑料玩具中邻苯二甲酸盐浓度是否超标的一种快速、灵敏的方法。
Phthalates are widely used in commercial products as plasticizers. However it has been demonstrated that some of the phthalates constitute a risk to human health. Regulations on phthalates have been established especially on children products. The EU regulates six phthalates in plastic toys to a level of less than 0.1%.
The determination of Phthalates in plastic toys generally involves extraction, concentration and filtration of the target analysts prior to GCMS analysis. In this paper we used an alternative method by Thermal Desorption (TD)-GCMS technique. The method is simple and rapid. It has proved to be a rapid and sensitive method to check whether the concentration of phthalates in the toys exceeds the regulatory limit.
Conclusion:
·The TD-GCMS method using Frontier Lab pyrolyzer has been proved to be useful in the rapid screening and quantitative determination of the six regulated phthalates in plastic toys.
·The method also showed by directly introducing the powder of the toy, a reasonable RSD (5%) could be achieved. For higher precision, one could dissolve the powder in THF solution.
·This method is currently being evaluated by ASTM and CPSC.
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