Tears saddness/joy

Is there any difference between tears of joy and tears of saddness? Are there any chemical/biological/hormonal differences?

Well, I find the factoid “a study was once done that proved that tears of grief have a different chemical composition from other tears” posted on the Web, but I can’t find the study itself.

Typical hit.

http://www.bodymindhelp.com/feelings.htm

Anybody else wanna have a go? Try “tears grief chemical composition”.

http://www.google.com