Polyethylene terephthalate (PET) bottles are some of the most commonly used containers for beverages. During the manufacturing process of PET resin in Japan, metallic catalysts such as Sb and Ge are widely used, with other metals or metallic compounds also being employed to improve the quality of PET bottles. However, few reports into the contents of such elements exist. Thus, we herein report the concentrations of 34 elements (ie, Li, B, Na, Mg, Al, P, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Zr, Mo, Ag, Cd, Sn, Sb, Cs, Ba, W, Pb, and U) in 16 samples of unused virgin PET bottles for beverages. The measurement was performed by inductively coupled plasma optical emission spectrometry (ICP‐OES) and inductively coupled plasma mass spectrometry (ICP‐MS), and these bottles were found to contain five main elements (ie, <0.5‐ to 50‐mg/kg Ge, <1‐ to 26‐mg/kg Ti, <0.1‐ to 279‐mg/kg Sb, <10‐ to 48‐mg/kg P, and <0.5‐ to 53‐mg/kg Co) that were used as polymerisation catalysts, stabilisers, oxidation catalysts, and bluing agents. Furthermore, when these residual element concentrations in 21 commercial mineral‐water PET bottles were determined, there was no significant difference from unused bottles.

中文翻译：

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日本用于饮料的聚对苯二甲酸乙二醇酯瓶的各种组成元素的测定

聚对苯二甲酸乙二酯（PET）瓶是一些最常用的饮料容器。在日本的PET树脂制造过程中，广泛使用诸如Sb和Ge之类的金属催化剂，同时也采用其他金属或金属化合物来提高PET瓶的质量。但是，很少有关于此类元素内容的报告。因此，我们在此报告了34种元素（即Li，B，Na，Mg，Al，P，K，Ca，Ti，V，Cr，Mn，Fe，Co，Ni，Cu，Zn，Ga，Ge ，未使用的原始PET饮料瓶样品中的As，Se，Rb，Sr，Zr，Mo，Ag，Cd，Sn，Sb，Cs，Ba，W，Pb和U）。通过电感耦合等离子体发射光谱（ICP-OES）和电感耦合等离子体质谱（ICP-MS）进行测量，发现这些瓶子包含五个主要元素（即<0）。5至50mg / kg Ge，<1至26mg / kg Ti，<0.1至279mg / kg Sb，<10至48mg / kg P和<0.5至53mg mg / kg Co）用作聚合催化剂，稳定剂，氧化催化剂和上蓝剂。此外，当确定了21种市售矿泉水PET瓶中的这些残留元素浓度时，与未使用的瓶没有显着差异。