Interesting research group for Yixing clay
Posted: Wed Feb 13, 2019 12:04 am
Dr Lu recently mentioned an interesting guy and his research to me:
https://www.facebook.com/groups/2179755 ... cation=ufi
He uses some sort of machine to do a spectral analysis (if the translation is right, my scientific Chinese, and Dr Lu's scientific English were respectively not good enough to be sure about the correct translation). The method is non-intrusive, so no pots were harmed in the process, in case anyone was worried.
What seems to be a preliminary result is, that Yixing factory clays were additive free until the 80s. In all samples from the 90s onwards, the clay was not pure anymore and additives have been used. That does not necessarily mean the clay is bad or harmful, just that it is not pure hongni, zini, etc.
I did not dig in deep enough yet to see how many samples had been tested or what the exact set up was, nonetheless interesting to see someone finally doing scientific research on this topic.
https://www.facebook.com/groups/2179755 ... cation=ufi
He uses some sort of machine to do a spectral analysis (if the translation is right, my scientific Chinese, and Dr Lu's scientific English were respectively not good enough to be sure about the correct translation). The method is non-intrusive, so no pots were harmed in the process, in case anyone was worried.
What seems to be a preliminary result is, that Yixing factory clays were additive free until the 80s. In all samples from the 90s onwards, the clay was not pure anymore and additives have been used. That does not necessarily mean the clay is bad or harmful, just that it is not pure hongni, zini, etc.
I did not dig in deep enough yet to see how many samples had been tested or what the exact set up was, nonetheless interesting to see someone finally doing scientific research on this topic.