Prior Gerald
CTL Bielefeld GmbH, Bielefeld, Germany.
Curr Probl Dermatol. 2015;48:152-7. doi: 10.1159/000369196. Epub 2015 Mar 26.
Legal limits for chemical substances require that they are linked to clearly defined analytical methods. Present limits for certain chemicals in tattoo and permanent make-up inks do not mention analytical methods for the detection of metals, polycyclic aromatic hydrocarbons or forbidden colourants. There is, therefore, no established method for the determination of the quantities of these chemicals in tattoo and permanent make-up inks. Failing to provide an appropriate method may lead to unqualified and questionable results which often cause legal disputes that are ultimately resolved by a judge with regard to the method that should have been applied. Analytical methods are tuned to exactly what is to be found and what causes the health problems. They are extremely specific. Irrespective of which is the correct method for detecting metals in tattoo inks, the focus should be on the actual amounts of ink in the skin. CTL® has conducted experiments to determine these amounts and these experiments are crucial for toxicological evaluations and for setting legal limits. When setting legal limits, it is essential to also incorporate factors such as daily consumption, total uptake and frequency of use. A tattoo lasts for several decades; therefore, the limits that have been established for heavy metals used in drinking water or soap are not relevant. Drinking water is consumed on a daily basis and soap is used several times per week, while tattooing only occurs once.
化学物质的法定限量要求它们与明确规定的分析方法相关联。目前纹身和纹眉墨水中某些化学物质的限量并未提及检测金属、多环芳烃或禁用色素的分析方法。因此，尚无确定纹身和纹眉墨水中这些化学物质含量的既定方法。未能提供适当的方法可能会导致不合格且有问题的结果，这往往会引发法律纠纷，最终由法官就应采用的方法做出裁决。分析方法是针对要检测的物质以及导致健康问题的因素进行调整的。它们极其具体。无论哪种是检测纹身墨水中金属的正确方法，重点都应放在皮肤中墨水的实际含量上。CTL®已进行实验来确定这些含量，这些实验对于毒理学评估和设定法定限量至关重要。在设定法定限量时，纳入每日摄入量、总摄入量和使用频率等因素也很重要。纹身会持续数十年；因此，为饮用水或肥皂中使用的重金属设定的限量并不适用。饮用水是每日饮用，肥皂每周使用几次，而纹身只进行一次。
