The contents was determined by thin layer scanner with double wavelength after the dithizone colouration.

双硫腙显色后，用双波长薄层扫描仪测定。

youdao

The contents was determined by thin layer scanner with double wavelength after the dithizone colouration.

双硫腙显色后，用双波长薄层扫描仪测定。

youdao