أرسل هذا في رسالة قصيرة: Greener analytical method for the determination of copper(II) in wastewater by micro flow system with optical sensor

 __   _    _    _    _    _    __   __    _____   
| || | || | || | || | |  | ||  \ \\/ //  |__  //  
| '--' || | || | || | |/\| ||   \ ` //     / //   
| .--. || | \\_/ || |  /\  ||    | ||     / //__  
|_|| |_||  \____//  |_// \_||    |_||    /_____|| 
`-`  `-`    `---`   `-`   `-`    `-`'    `-----`