I have a question. In your 2nd edited setence below, (since papers prefer not to use "we" or "I" in scientific journal), can I write it as follows? check and let me know if this would be ok.<br /><br /><br />your edited sentence: "...uncontrolled and improper disposal of nano-TiO<sub>2</sub>&nbsp;products would raise pollution issues and in response we need to develop safe nano-products and disposal methods and control the intentional and unintentional releases of nano-TiO<sub>2</sub>&nbsp;particles."<br /><br />My suggestion: "...uncontrolled and improper disposal of nano-TiO<sub>2</sub>&nbsp;products would raise pollution issues, thereby it is urgently encouraged to &nbsp;develop safe nano-products and disposal methods and control the intentional and unintentional releases of nano-TiO<sub>2</sub>&nbsp;particles."<br /><br />&nbsp;<br /> <br />
<p>would raise issues and need to develop safe manufacturing of nano-products and disposal methods as well as controlling both intentional and unintentional release of nano-TiO<sub>2</sub> particles.</p>