毛竹笋持久性有机污染物分布特征

以浙江省毛竹笋为对象,研究不同部位、不同季节和不同区域的毛竹笋中21种有机氯、18种多氯联苯和16种多环芳烃三类持久性有机污染物的分布特征.结果表明:有机氯在笋肉中分布高于笋壳,笋肉上部高于下部,春笋污染为冬笋的4倍,污染较重地区为上虞,含量最高的为毒杀芬(约105μg/kg).多氯联苯在笋肉中分布高于笋壳,笋肉下部高...

Distribution Characteristics of Persistent Organic Pollutants in Bamboo Shoots Produced in Zhejiang Province

The distribution characteristics of three groups of persistent organic pollutants (POPs), 21 organochlorine pesticides (OCPs), 18 polychlorinated biphenyls (PCBs) and 16 polycyclic aromatic hydrocarbons (PAHs), in different parts of bamboo shoots and bamboo shoots from different harvest seasons and producing regions in Zhejiang province were studied. The results showed that the distribution of OCPs was more abundant in the shoot than in the shell, and in the upper part of the shoot than in the lower part, and it was four-fold higher in spring bamboo shoots than in winter bamboo shoots. The level of OCPs pollution was higher in bamboo shoots from Shangyu than in those from other regions. Toxaphene was the most abundant among these OCPs (about 105 μg/kg). The distribution of PCBs was higher than in the shoot that in the shell, in the bottom part than in the upper part, and in spring than in winter. The level of PCBs pollution in bamboo shoots from Wuyi was the highest, and PCB52 was the most abundant PCB (1.14 μg/kg). The distribution of PAHs in the shoot was close to that in the shell, slightly higher in the upper part than the bottom part, and 1.5 times higher in spring than in winter. The highest level of PAHs distribution was found in bamboo shoots from Yongjia, and the most abundant PAH was phenanthrene (5.85 μg/kg). None of the 55 POPs in bamboo shoots exceeded the limits specified in the existing standards and were at a relatively safe level. This study not only improves the theoretical basis for bamboo shoot quality and safety, but also provides reference and support for the remediation and management of environmental pollution.