Abstract：
Plastic litter might contain phthalates that can be transferred to marine environment or can be introduced into the marine food chain. Phthalic acid is the final product of phthalate decomposition in marine organisms. Here we used NMR spectroscopy to determine and quantify phthalic acid and dimethyl phthalate in fish muscles. Spike-and-recovery experiments were carried out to confirm assignment of phthalates resonance signals in NMR spectra and to evaluate the method specificity, accuracy, and linearity. The LOQ and LOD of the rapid 1H NMR experiment with a standard setting were respectively 23.0 and 8.0 mg of phthalic acid in kg of fish muscles. Phthalic acid was detected in 13 out of 113 Atlantic cod and none in farmed Atlantic salmon from Norwegian sea.
摘要：
塑料垃圾可能含有邻苯二甲酸盐，可以转移到海洋环境中，也可以引入海洋食物链中。邻苯二甲酸是海洋生物中邻苯二甲酸酯分解的最终产物。在这里，我们使用NMR光谱来确定和定量鱼肌肉中的邻苯二甲酸和邻苯二甲酸二甲酯。进行了加标和恢复实验，以确认NMR光谱中邻苯二甲酸酯共振信号的分配，并评估方法的特异性，准确度,和线性。具有标准设置的快速1HNMR实验的LOQ和LOD分别为23.0和8.0mg邻苯二甲酸(在kg的鱼肌肉中)。在113只大西洋鳕鱼中，有13只检测到邻苯二甲酸，在挪威海养殖的大西洋鲑鱼中没有检测到邻苯二甲酸。
