的确Zn是细胞毒性有争议的金属元素，但其进入细胞中的量过大或者以纳米颗

It is true that Zn is a controversial metal element with cytotoxicity, but the amount of Zn entering the cell is too large or the toxicity of entering the cell with nanoparticles as a carrier is unknown. Adamson et al. showed that zn is an important element in atmospheric particulates. Toxic elements, we have detected that the cd content in model particulate matter and PM2.5 is much lower than the content of zn, which may also be the reason for the weak toxic performance of cd.

It is true that Zn is a controversial metal element of cytotoxicity, but the amount of toxicity entering the cell is too large or in the case of nanoparticles as a carrier is unknown, Adamson et al. have shown that zn is an important toxic element in atmospheric particles, we detected that the model particulate matter and PM2.5 in the cd content is much lower than the content of zn, which may also be the cause of the weak toxicity performance of cd.

的确Zn是细胞毒性有争议的金属元素，但其进入细胞中的量过大或者以纳米颗粒物为载体的情况下进入细胞中的毒性是未知的，Adamson等人就表明zn是大气颗粒物中重要的毒性元素，我们检测到模型颗粒物与PM2.5中的cd含量要比zn的含量低的多，这也可能是cd的毒性表现较弱原因。<br>