1 year ICP results ALL FOR REEF

[Pod_01]

In the video the presenter mentions that sample contents may precipitate out of the solution.

No idea which elements of any would be affected by this, much less Zinc specifically.

I honestly am not seeing how that can happen.
Unless the sample had elevated calcium, alk, pH precipitation is not just going to start for no reason.

Maybe it was genetic statement, this can possibly happen under some extreme conditions…

Usual suspects for precipitation are calcium, magnesium, phosphate…
Zinc will bind as Randy mentioned…

 

[Otago]

I honestly am not seeing how that can happen.
Unless the sample had elevated calcium, alk, pH precipitation is not just going to start for no reason.

Maybe it was genetic statement, this can possibly happen under some extreme conditions…

Usual suspects for precipitation are calcium, magnesium, phosphate…
Zinc will bind as Randy mentioned…

If the sample freezes this can happen, the brine that hasn't frozen can form precipitates. If the sample tube is full then the brine can also leak out.

Just like you say though, these are extreme conditions, but they are possible if shipping in winter.

 

[Randy Holmes-Farley]

If the sample freezes this can happen, the brine that hasn't frozen can form precipitates. If the sample tube is full then the brine can also leak out.

Just like you say though, these are extreme conditions, but they are possible if shipping in winter.

We had Triton test that and they did not find a change, but freezing is a concern if the sample tube is filled too full, pushing material out of the tube. Oceamo gives instructions to avoid that by leaving an air space in the tube.

 

[Otago]

We had Triton test that and they did not find a change, but freezing is a concern if the sample tube is filled too full, pushing material out of the tube. Oceamo gives instructions to avoid that by leaving an air space in the tube.

Thanks for the correction, do you know if it was because the precipitates went back into solution or there were no precipitates formed ?

 

[Randy Holmes-Farley]

Thanks for the correction, do you know if it was because the precipitates went back into solution or there were no precipitates formed ?

My concern at the time was formation of calcium carbonate, which would not redissolve if it was aragonite or calcite. But apparently the crystal form that dominates at low temps is ikaite, which will redissolve when warmed.

I will noe that Triton was not using icp-ms at the time so some trace elements were not tracked, being below the detection limit.