此外，德国联邦自然保护部和世界自然基金会（World Wide Fund for Nature）与美因茨约翰尼斯古腾堡大学（Johannes Gutenberg University Mainz）合作开发了检测象牙样本中的同位素以追溯其来源的方法。
Moreover, Germany’s Federal Ministry of Nature Conservation and the World Wide Fund for Nature (WWF), in collaboration with Johannes Gutenberg University Mainz, have developed a way to measure the isotope in ivory samples to trace their provenance.