galvanized retort 1st burn. can I use?

I realized after I made my 1st batch of bio char that the can I used for retort was galvanized. I don't know much about galvanization but to you think the galvanization affected the bio char I know I caught up to at least 600ﾟ.
More details:
I filled a 15 gallon can ,with a lid , with oak firewood cut into 3" chunks. I then put a layer of wood on the bottom of my 55 gallon barrel that I placed the retort can upside down on top of that then filled in the sides with wood and then put one on top and did a top down burn with a chimney and lid on top. It seemed to burn OK and I had readings of 630ﾟ at the bottom of the chimney flue. After I removed the can and saw some discolouration I realize that it had been galvanized do you think this would be any problem with the end product given the temps that it had reached.  The bio char seems to have turned out OK ,it is glass and crystalyn like.

-janx

When things are galvanized, they are treated with zinc. I know they put zinc strips on top of rooves to kill moss, but then they say you shouldn't put the water into your vegie garden.  I don't know how much zinc escapes from the fire, but it is definitely a micronutrient.
JOhn S
PDX OR

I am not allowed to collect water for vegetables (for sale) from half my barn roof as it is galvanised so I don't think I would want to use anything with that on it for any long/er contact products such as char.

I really don't know how the galvanized can would affect the charcoal but well pipes and water lines to houses have been galvanized since the plains states were settled.  Some neighbors lived to their upper nineties and a couple to over 100 years drinking the water that came into their houses through galvanized pipe.  Breathing the smoke is not good though.

Skandi Rogers wrote:I am not allowed to collect water for vegetables (for sale) from half my barn roof as it is galvanised so I don't think I would want to use anything with that on it for any long/er contact products such as char.

thanks
This was heated to around 700 - 900 degrees for an extended period of time. 3-4 hrs, at least.